avajs/ava (ava)
### [`v6.1.3`](https://togithub.com/avajs/ava/releases/tag/v6.1.3)
[Compare Source](https://togithub.com/avajs/ava/compare/v6.1.2...v6.1.3)
#### What's Changed
- Include Node.js 22 in supported engines and test matrix by [@lenovouser](https://togithub.com/lenovouser) in [https://github.com/avajs/ava/pull/3328](https://togithub.com/avajs/ava/pull/3328)
- Add VS Code debugging instructions for Yarn PnP projects by [@bitjson](https://togithub.com/bitjson) in [https://github.com/avajs/ava/pull/3317](https://togithub.com/avajs/ava/pull/3317)
- Document `serial` configuration option by [@turadg](https://togithub.com/turadg) in [https://github.com/avajs/ava/pull/3321](https://togithub.com/avajs/ava/pull/3321)
#### New Contributors
- [@bitjson](https://togithub.com/bitjson) made their first contribution in [https://github.com/avajs/ava/pull/3317](https://togithub.com/avajs/ava/pull/3317)
- [@turadg](https://togithub.com/turadg) made their first contribution in [https://github.com/avajs/ava/pull/3321](https://togithub.com/avajs/ava/pull/3321)
- [@lenovouser](https://togithub.com/lenovouser) made their first contribution in [https://github.com/avajs/ava/pull/3328](https://togithub.com/avajs/ava/pull/3328)
**Full Changelog**: https://github.com/avajs/ava/compare/v6.1.2...v6.1.3
### [`v6.1.2`](https://togithub.com/avajs/ava/releases/tag/v6.1.2)
[Compare Source](https://togithub.com/avajs/ava/compare/v6.1.1...v6.1.2)
#### What's Changed
- Fix throws assertions rejecting falsy values when `any: true` by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3313](https://togithub.com/avajs/ava/pull/3313)
**Full Changelog**: https://github.com/avajs/ava/compare/v6.1.1...v6.1.2
### [`v6.1.1`](https://togithub.com/avajs/ava/releases/tag/v6.1.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v6.1.0...v6.1.1)
#### What's Changed
- Fix 'previous failures' in watch mode always incrementing by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3297](https://togithub.com/avajs/ava/pull/3297)
**Full Changelog**: https://github.com/avajs/ava/compare/v6.1.0...v6.1.1
### [`v6.1.0`](https://togithub.com/avajs/ava/releases/tag/v6.1.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v6.0.1...v6.1.0)
##### What's Changed
- Implement `registerCompletionHandler()` by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3283](https://togithub.com/avajs/ava/pull/3283)
AVA 6 expects test code to clean up gracefully when the tests are complete, allowing the test environment (worker thread or child process) to exit. If this does not happen, AVA will report a timeout. You can use `registerCompletionHandler()` to perform any other clean up (or indeed exit the process) after AVA has completed the test execution. See [the description here](https://togithub.com/avajs/ava/blob/main/docs/08-common-pitfalls.md#timeouts-because-a-file-failed-to-exit).
- Fix potential bug with watch mode when no failed test files are written by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3287](https://togithub.com/avajs/ava/pull/3287)
- Fix `ava/internal` ESM type module by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3292](https://togithub.com/avajs/ava/pull/3292)
**Full Changelog**: https://github.com/avajs/ava/compare/v6.0.1...v6.1.0
### [`v6.0.1`](https://togithub.com/avajs/ava/releases/tag/v6.0.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v6.0.0...v6.0.1)
#### What's Changed
- Ensure watch mode works outside of its integration tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3273](https://togithub.com/avajs/ava/pull/3273)
**Full Changelog**: https://github.com/avajs/ava/compare/v6.0.0...v6.0.1
### [`v6.0.0`](https://togithub.com/avajs/ava/releases/tag/v6.0.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.3.1...v6.0.0)
##### Breaking Changes
- AVA now requires Node.js versions 18.18, 20.8 or 21. Versions 14 and 16 are no longer supported. [#3251](https://togithub.com/avajs/ava/issues/3251) [#3216](https://togithub.com/avajs/ava/issues/3216)
- When tests finish, worker threads or child processes are no longer exited through `proces.exit()`. If your test file does not exit on its own, the test run will time out. [#3260](https://togithub.com/avajs/ava/issues/3260)
- Changes to watch mode [#3218](https://togithub.com/avajs/ava/issues/3218):
- Watch mode can no longer be started via the `ava.config.*` or `package.json` configuration.
- The `ignoredByWatcher` configuration has moved to the `watchMode` object, under the `ignoreChanges` key.
- Watch mode now uses the built-in [`fs.watch()`](https://nodejs.org/api/fs.html#fswatchfilename-options-listener) in recursive mode. This is supported on Linux in Node.js 20 or newer, and MacOS and Windows in Node.js 18 as well. There are [caveats](https://nodejs.org/api/fs.html#caveats) to keep in mind.
- Failed assertions now throw, meaning that any subsequent code is not executed. This also impacts the type definitions. [#3246](https://togithub.com/avajs/ava/issues/3246)
- [Only native errors](https://nodejs.org/api/util.html#utiltypesisnativeerrorvalue) are now considered errors by the `t.throws()` and `t.throwsAsync()` assertions. [`Object.create(Error.prototype)` is **not** a native error](Object.create\(Error.prototype\)). [#3229](https://togithub.com/avajs/ava/issues/3229)
- Changes to modules loaded through the `require` configuration [#3184](https://togithub.com/avajs/ava/issues/3184):
- If such modules export a default function, this function is now invoked.
- Local files are loaded through `@ava/typescript` if necessary.
##### Improvements
##### Rewritten watcher
The watcher has been rewritten. It’s now built on [`fs.watch()`](https://nodejs.org/api/fs.html#fswatchfilename-options-listener) in recursive mode.
[`@vercel/nft`](https://togithub.com/vercel/nft) is used to perform static dependency analysis, supporting ESM and CJS imports for JavaScript & TypeScript source files. This is a huge improvement over the previous runtime tracking of CJS imports, which did not support ESM.
Integration with [`@ava/typescript`](https://togithub.com/avajs/typescript) has been improved. The watcher can now detect a change to a TypeScript source file, then wait for the corresponding build output to change before re-running tests.
The ignoredByWatcher configuration has moved to the watchMode object, under the ignoreChanges key.
See [#3218](https://togithub.com/avajs/ava/issues/3218) and [#3257](https://togithub.com/avajs/ava/issues/3257).
##### Failed assertions now throw
Assertions now throw a `TestFailure` error when they fail. This error is not exported or documented and should not be used or thrown manually. You cannot catch this error in order to recover from a failure, use `t.try()` instead.
All assertions except for `t.throws()` and `t.throwsAsync()` now return `true` when they pass. This is useful for some of the assertions in TypeScript where they can be used as a type guard.
Committing a failed `t.try()` result now also throws.
See [#3246](https://togithub.com/avajs/ava/issues/3246).
##### `t.throws()` and `t.throwsAsync()` can now expect any error
By default, the thrown error (or rejection reason) must be a native error. You can change the assertion to expect any kind of error by setting `any: true` in the expectation object:
```js
t.throws(() => { throw 'error' }, {any: true})
```
See [#3245](https://togithub.com/avajs/ava/issues/3245) by [@adiSuper94](https://togithub.com/adiSuper94).
##### The `require` configuration is now more powerful
It now loads ES modules.
Local files are loaded through `@ava/typescript` if necessary, so you can also write these in TypeScript.
If there is a default export function, it is invoked after loading. The function is awaited so it can do asynchronous setup before further modules are loaded. Arguments from the configuration can be passed to the function (as a \[[structured clone](https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)]\(https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)).
See [#3184](https://togithub.com/avajs/ava/issues/3184) by [@sculpt0r](https://togithub.com/sculpt0r).
##### Other changes worth noting
- Internal events can now be observed (experimentally). See [#3247](https://togithub.com/avajs/ava/issues/3247) by [@codetheweb](https://togithub.com/codetheweb). It’s experimental and undocumented.
- You can now use `t.timeout.clear()` to restore a previous `t.timeout()`. [#3221](https://togithub.com/avajs/ava/issues/3221)
- Code coverage is flushed to disk at opportune moments. [#3220](https://togithub.com/avajs/ava/issues/3220)
##### New Contributors
- [@sculpt0r](https://togithub.com/sculpt0r) made their first contribution in [https://github.com/avajs/ava/pull/3184](https://togithub.com/avajs/ava/pull/3184)
- [@ZachHaber](https://togithub.com/ZachHaber) made their first contribution in [https://github.com/avajs/ava/pull/3233](https://togithub.com/avajs/ava/pull/3233)
- [@adiSuper94](https://togithub.com/adiSuper94) made their first contribution in [https://github.com/avajs/ava/pull/3245](https://togithub.com/avajs/ava/pull/3245)
- [@bricker](https://togithub.com/bricker) made their first contribution in [https://github.com/avajs/ava/pull/3250](https://togithub.com/avajs/ava/pull/3250)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.3.1...v6.0.0
### [`v5.3.1`](https://togithub.com/avajs/ava/releases/tag/v5.3.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.3.0...v5.3.1)
#### What's Changed
- Update `t.like()` to support Symbol keys and ignore non-enumerable properties by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3209](https://togithub.com/avajs/ava/pull/3209)
- Fix circular selector detection in `t.like()` by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3212](https://togithub.com/avajs/ava/pull/3212)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.3.0...v5.3.1
### [`v5.3.0`](https://togithub.com/avajs/ava/releases/tag/v5.3.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.2.0...v5.3.0)
#### What's Changed
- Support arrays in `t.like()` assertions by [@tommy-mitchell](https://togithub.com/tommy-mitchell) in [https://github.com/avajs/ava/pull/3185](https://togithub.com/avajs/ava/pull/3185)
- Recognize typical assertion errors (`expect` and `assert`) and use their formatting by [@Irvenae](https://togithub.com/Irvenae) in [https://github.com/avajs/ava/pull/3187](https://togithub.com/avajs/ava/pull/3187)
#### New Contributors
- [@MartynasZilinskas](https://togithub.com/MartynasZilinskas) made their first contribution in [https://github.com/avajs/ava/pull/3172](https://togithub.com/avajs/ava/pull/3172)
- [@flovogt](https://togithub.com/flovogt) made their first contribution in [https://github.com/avajs/ava/pull/3194](https://togithub.com/avajs/ava/pull/3194)
- [@ondreian](https://togithub.com/ondreian) made their first contribution in [https://github.com/avajs/ava/pull/3192](https://togithub.com/avajs/ava/pull/3192)
- [@tommy-mitchell](https://togithub.com/tommy-mitchell) made their first contribution in [https://github.com/avajs/ava/pull/3185](https://togithub.com/avajs/ava/pull/3185)
- [@craigahobbs](https://togithub.com/craigahobbs) made their first contribution in [https://github.com/avajs/ava/pull/3198](https://togithub.com/avajs/ava/pull/3198)
- [@Irvenae](https://togithub.com/Irvenae) made their first contribution in [https://github.com/avajs/ava/pull/3187](https://togithub.com/avajs/ava/pull/3187)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.2.0...v5.3.0
### [`v5.2.0`](https://togithub.com/avajs/ava/releases/tag/v5.2.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.1.1...v5.2.0)
#### What's Changed
- Infer thrown error from expectations by [@tao-cumplido](https://togithub.com/tao-cumplido) in [https://github.com/avajs/ava/pull/3156](https://togithub.com/avajs/ava/pull/3156)
#### New Contributors
- [@tao-cumplido](https://togithub.com/tao-cumplido) made their first contribution in [https://github.com/avajs/ava/pull/3156](https://togithub.com/avajs/ava/pull/3156)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.1.1...v5.2.0
### [`v5.1.1`](https://togithub.com/avajs/ava/releases/tag/v5.1.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.1.0...v5.1.1)
#### What's Changed
- Fix de-registration of shared workers to ensure AVA exits correctly, by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3149](https://togithub.com/avajs/ava/pull/3149) & [https://github.com/avajs/ava/pull/3151](https://togithub.com/avajs/ava/pull/3151)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.1.0...v5.1.1
### [`v5.1.0`](https://togithub.com/avajs/ava/releases/tag/v5.1.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.0.1...v5.1.0)
##### What's Changed
- Output logs for tests that remain pending when AVA exits by [@kevo1ution](https://togithub.com/kevo1ution) in [https://github.com/avajs/ava/pull/3125](https://togithub.com/avajs/ava/pull/3125)
- Check for --config file extensions after they fail to load, allowing custom loaders by [@panva](https://togithub.com/panva) in [https://github.com/avajs/ava/pull/3135](https://togithub.com/avajs/ava/pull/3135)
##### New Contributors
- [@kevo1ution](https://togithub.com/kevo1ution) made their first contribution in [https://github.com/avajs/ava/pull/3125](https://togithub.com/avajs/ava/pull/3125)
- [@panva](https://togithub.com/panva) made their first contribution in [https://github.com/avajs/ava/pull/3135](https://togithub.com/avajs/ava/pull/3135)
**Full Changelog**: https://github.com/avajs/ava/compare/v5.0.1...v5.1.0
### [`v5.0.1`](https://togithub.com/avajs/ava/releases/tag/v5.0.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v5.0.0...v5.0.1)
Despite the major version bump this is a relatively minor release. Node.js 12 is no longer supported. The type definitions are now distributed to be compatible with TypeScript 4.7 or newer.
```console
npm install --save-dev ava
```
#### Breaking Changes
- AVA now requires Node.js 14.19, 16.15 or 18. [https://github.com/avajs/ava/pull/3043](https://togithub.com/avajs/ava/pull/3043)
- Type definition distribution assumes at least TypeScript 4.7. [https://github.com/avajs/ava/pull/3041](https://togithub.com/avajs/ava/pull/3041)
- We're now exporting types rather than interfaces. [https://github.com/avajs/ava/pull/3096](https://togithub.com/avajs/ava/pull/3096)
#### Improvements
- Detect `process.exit()` called from tests by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3080](https://togithub.com/avajs/ava/pull/3080)
- Improve test result accessibility by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3082](https://togithub.com/avajs/ava/pull/3082)
- Parse for line numbers with latest supported ECMA version by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3063](https://togithub.com/avajs/ava/pull/3063)
- Work around `os.cpus()` returning an empty array on unsupported platforms by [@catink123](https://togithub.com/catink123) in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095)
- Count timeouts separately from the timed out tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3099](https://togithub.com/avajs/ava/pull/3099)
- Cap idle timeouts to the maximum possible value by [@creestor](https://togithub.com/creestor) in [https://github.com/avajs/ava/pull/3100](https://togithub.com/avajs/ava/pull/3100)
#### New Contributors
- [@Prinzhorn](https://togithub.com/Prinzhorn) made their first contribution in [https://github.com/avajs/ava/pull/3073](https://togithub.com/avajs/ava/pull/3073)
- [@catink123](https://togithub.com/catink123) made their first contribution in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095)
- [@creestor](https://togithub.com/creestor) made their first contribution in [https://github.com/avajs/ava/pull/3100](https://togithub.com/avajs/ava/pull/3100)
- [@DavidVujic](https://togithub.com/DavidVujic) made their first contribution in [https://github.com/avajs/ava/pull/3109](https://togithub.com/avajs/ava/pull/3109)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.3.3...v5.0.1
### [`v5.0.0`](https://togithub.com/avajs/ava/releases/tag/v5.0.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.3.3...v5.0.0)
Despite the major version bump this is a relatively minor release. Node.js 12 is no longer supported. The type definitions are now distributed to be compatible with TypeScript 4.7 or newer.
It's available as a pre-release under the `next` tag for the next few weeks:
```console
npm install --save-dev ava@next
```
#### Breaking Changes
- AVA now requires Node.js 14.19, 16.15 or 18. [https://github.com/avajs/ava/pull/3043](https://togithub.com/avajs/ava/pull/3043)
- Type definition distribution is no longer compatible with TypeScript versions before 4.7. [https://github.com/avajs/ava/pull/3041](https://togithub.com/avajs/ava/pull/3041)
- We're now exporting types rather than interfaces. [https://github.com/avajs/ava/pull/3096](https://togithub.com/avajs/ava/pull/3096)
#### Improvements
- Detect `process.exit()` called from tests by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3080](https://togithub.com/avajs/ava/pull/3080)
- Improve test result accessibility by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3082](https://togithub.com/avajs/ava/pull/3082)
- Parse for line numbers with latest supported ECMA version by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3063](https://togithub.com/avajs/ava/pull/3063)
- Work around `os.cpus()` returning an empty array on unsupported platforms by [@catink123](https://togithub.com/catink123) in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095)
- Count timeouts separately from the timed out tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3099](https://togithub.com/avajs/ava/pull/3099)
#### New Contributors
- [@Prinzhorn](https://togithub.com/Prinzhorn) made their first contribution in [https://github.com/avajs/ava/pull/3073](https://togithub.com/avajs/ava/pull/3073)
- [@catink123](https://togithub.com/catink123) made their first contribution in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.3.3...v5.0.0
### [`v4.3.3`](https://togithub.com/avajs/ava/releases/tag/v4.3.3)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.3.2...v4.3.3)
Add compatibility with Node.js 18.8, thanks [@Brooooooklyn](https://togithub.com/Brooooooklyn) [#3091](https://togithub.com/avajs/ava/issues/3091).
**Full Changelog**: https://github.com/avajs/ava/compare/v4.3.1...v4.3.3
### [`v4.3.2`](https://togithub.com/avajs/ava/compare/v4.3.1...v4.3.2)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.3.1...v4.3.2)
### [`v4.3.1`](https://togithub.com/avajs/ava/releases/tag/v4.3.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.3.0...v4.3.1)
#### What's Changed
- When translating line numbers, check whether the source map entry has original values in [https://github.com/avajs/ava/pull/3061](https://togithub.com/avajs/ava/pull/3061)
- Report error when parsing for line number selection in [https://github.com/avajs/ava/pull/3062](https://togithub.com/avajs/ava/pull/3062)
#### New Contributors
- [@ericcornelissen](https://togithub.com/ericcornelissen) made their first contribution in [https://github.com/avajs/ava/pull/3048](https://togithub.com/avajs/ava/pull/3048)
- [@AlencarGabriel](https://togithub.com/AlencarGabriel) made their first contribution in [https://github.com/avajs/ava/pull/3051](https://togithub.com/avajs/ava/pull/3051)
- [@binyamin](https://togithub.com/binyamin) made their first contribution in [https://github.com/avajs/ava/pull/3028](https://togithub.com/avajs/ava/pull/3028)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.3.0...v4.3.1
### [`v4.3.0`](https://togithub.com/avajs/ava/releases/tag/v4.3.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.2.0...v4.3.0)
#### What's Changed
- We're now shipping type definitions compatible with TypeScript 4.7, by [@RebeccaStevens](https://togithub.com/RebeccaStevens) in [https://github.com/avajs/ava/pull/3024](https://togithub.com/avajs/ava/pull/3024)
- `throws` and `throwsAsync` assertions now take a function to test error messages, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/2995](https://togithub.com/avajs/ava/pull/2995)
- Test failure summaries no longer duplicate `t.log()` messages, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3013](https://togithub.com/avajs/ava/pull/3013)
- The number of timed-out tests is printed at the end of a run, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3021](https://togithub.com/avajs/ava/pull/3021)
- We've documented how to load multiple instances of the same "shared" worker, by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3009](https://togithub.com/avajs/ava/pull/3009)
- Links to translated documentation have been updated, by [@forresst](https://togithub.com/forresst) in [https://github.com/avajs/ava/pull/3037](https://togithub.com/avajs/ava/pull/3037)
- Node.js 17 has been removed from the test matrix, and Node.js 18 added in [https://github.com/avajs/ava/pull/3039](https://togithub.com/avajs/ava/pull/3039)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.2.0...v4.3.0
### [`v4.2.0`](https://togithub.com/avajs/ava/releases/tag/v4.2.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.1.0...v4.2.0)
#### What's Changed
- Update Babel recipe for AVA 4 by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3000](https://togithub.com/avajs/ava/pull/3000)
- Document how GitHub Actions can be configured for parallel builds by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3007](https://togithub.com/avajs/ava/pull/3007)
- Allow parallel builds to be disabled by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3001](https://togithub.com/avajs/ava/pull/3001)
- Improve typing of teardown methods by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3003](https://togithub.com/avajs/ava/pull/3003)
#### New Contributors
- [@mefengl](https://togithub.com/mefengl) made their first contribution in [https://github.com/avajs/ava/pull/2999](https://togithub.com/avajs/ava/pull/2999)
- [@il3ven](https://togithub.com/il3ven) made their first contribution in [https://github.com/avajs/ava/pull/3000](https://togithub.com/avajs/ava/pull/3000)
- [@codetheweb](https://togithub.com/codetheweb) made their first contribution in [https://github.com/avajs/ava/pull/3007](https://togithub.com/avajs/ava/pull/3007)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.1.0...v4.2.0
### [`v4.1.0`](https://togithub.com/avajs/ava/releases/tag/v4.1.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.0.1...v4.1.0)
#### New features
- Allow customized sorting of test files prior to execution using `sortTestFiles()` in `ava.config.js` files by [@erezrokah](https://togithub.com/erezrokah) in [https://github.com/avajs/ava/pull/2968](https://togithub.com/avajs/ava/pull/2968)
- Warn when unsupported `ava.config.json` files are encountered by [@razor-x](https://togithub.com/razor-x) in [https://github.com/avajs/ava/pull/2962](https://togithub.com/avajs/ava/pull/2962)
- Loosen type constraints for `deepEqual` assertion by [@RebeccaStevens](https://togithub.com/RebeccaStevens) in [https://github.com/avajs/ava/pull/2969](https://togithub.com/avajs/ava/pull/2969)
#### Fixes
- `ava --version` works again by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/2961](https://togithub.com/avajs/ava/pull/2961)
#### New Contributors
- [@sikrinick](https://togithub.com/sikrinick) made their first contribution in [https://github.com/avajs/ava/pull/2958](https://togithub.com/avajs/ava/pull/2958)
- [@scottdotjs](https://togithub.com/scottdotjs) made their first contribution in [https://github.com/avajs/ava/pull/2954](https://togithub.com/avajs/ava/pull/2954)
- [@gibson042](https://togithub.com/gibson042) made their first contribution in [https://github.com/avajs/ava/pull/2975](https://togithub.com/avajs/ava/pull/2975)
- [@erezrokah](https://togithub.com/erezrokah) made their first contribution in [https://github.com/avajs/ava/pull/2968](https://togithub.com/avajs/ava/pull/2968)
- [@razor-x](https://togithub.com/razor-x) made their first contribution in [https://github.com/avajs/ava/pull/2962](https://togithub.com/avajs/ava/pull/2962)
- [@RebeccaStevens](https://togithub.com/RebeccaStevens) made their first contribution in [https://github.com/avajs/ava/pull/2969](https://togithub.com/avajs/ava/pull/2969)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.0.1...v4.1.0
### [`v4.0.1`](https://togithub.com/avajs/ava/releases/tag/v4.0.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v4.0.0...v4.0.1)
#### What's Changed
- Fix encoding of large snapshot data by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/2936](https://togithub.com/avajs/ava/pull/2936)
**Full Changelog**: https://github.com/avajs/ava/compare/v4.0.0...v4.0.1
### [`v4.0.0`](https://togithub.com/avajs/ava/releases/tag/v4.0.0): AVA 4
[Compare Source](https://togithub.com/avajs/ava/compare/v3.15.0...v4.0.0)
We're celebrating the new year with the official AVA 4 release! 🎊
```console
npm install -D ava
```
#### The cool new stuff 🆒
##### Worker threads 🧑💼
By default, test files are now run in worker threads! Huge thanks to [@dnlup](https://togithub.com/dnlup) for landing this.
Test files should run a little quicker, since it's easier to spin up a worker thread than a child process. You can use `--no-worker-threads` on the command line, or `workerThreads: false` in your AVA configuration, to fall back to using child processes.
##### Shared workers are no longer experimental 🎊
[Shared workers](https://togithub.com/avajs/ava/blob/main/docs/recipes/shared-workers.md) are no longer experimental. This is a powerful feature that loads a program in a worker thread in AVA's main process and then communicate with code running in the test workers. This enables your tests to better utilize shared resources during a test run, as well as providing opportunities to set up these resources before tests start (or clean them up after).
When you use watch mode, shared workers remain loaded across runs.
##### Improved test selection 🤳
AVA selects test files based on your `package.json` or `ava.config.*` configuration files. When used on the CLI you can then provide patterns to select a subset of these files.
You can now pass a folder and AVA will select the test files contained therein. Or you can provide a specific JavaScript file and AVA will run it even if it wasn’t selected by your configuration.
If AVA finds files based on the configuration, but none of those were selected to the CLI arguments, it now prints a warning.
##### Better monorepo support 🚝
AVA now looks for `ava.config.*` files in parent directories, until it finds a directory with a `.git` directory (or file). This lets you specify AVA configuration at the top of your monorepo and still run AVA from within each package.
##### New snapshot format 📸
[@ninevra](https://togithub.com/ninevra) has worked tirelessly on landing a new snapshot format. It contains all information necessary to regenerate the report file. This allows for snapshots to be updated even if tests or assertions are skipped.
##### Previously failing test files run first 🏃
AVA now records which test files failed in the previous run. It then prioritizes testing these files when you run AVA again. Thanks [@bunysae](https://togithub.com/bunysae)!
##### ESM support 🤾
AVA 4 comes with full ES module support. Both ESM and CJS entrypoints are provided so that you can use it no matter how you manage your project.
The `ava.config.js` file is now treated as CJS or ESM depending on module type configured in the `package.json` file. `ava.config.mjs` is now supported.
If you use JavaScript files with non-standard extensions you can [configure AVA to import them](https://togithub.com/avajs/ava/blob/main/docs/06-configuration.md#configuring-module-formats).
Note that [dependency tracking in watch mode does not yet work](https://togithub.com/avajs/ava/issues/2388) with ES modules.
##### Dedicated macro factory with type inference 🏭
`test.macro()` returns an object that can be used with `test()` and hooks. The `t.context` type is inherited from `test`. When used with TypeScript this gives much better type inference.
Like with AVA 3, regular functions that also have a `title` property that is a string-returning function are supported. However the type checking won’t be as good.
##### Source maps 🗺
AVA now uses the source map support that’s built in to Node.js itself. This should give better stack traces. However we’re not sure yet what happens if you load a program that automatically modifies stack traces.
Line number selection (where `npx ava test.js:5` runs the test at line 5) now uses source maps and so should work better with TypeScript files.
##### Assertions as type guards 💂
Most assertions now return a boolean indicating whether they passed. If you use AVA with TypeScript, you can use this as a type guard. Thanks [@jmarkham828](https://togithub.com/jmarkham828)!
(This is not supported for `t.snapshot()` and the "throws" assertions.)
#### Breaking changes 💥
AVA 4 requires at least Node.js 12.22, 14.17, 16.4 or 17. Node.js 10 is no longer supported.
If installed globally, AVA will no longer use any locally installed version. Install locally and run with `npx ava` instead. When running test files from another project that also has AVA installed, those test files will now fail to run (because they'll try and use that other AVA version).
##### Ecosystem 🏞
- Support for `@ava/babel` has been removed. We haven’t seen enough [contributions to that package](https://togithub.com/avajs/babel) to recommend it for AVA 4. We’d be open to reinstating it in the future (just as we’d be open to support any other compilation provider).
- As a consequence, “enhanced assertions” are no longer available.
- AVA 4 requires `avajs/typescript@1.1` or newer.
- Support for the [`esm` package](https://www.npmjs.com/package/esm) has been removed.
##### Configuration 🗒
- `ava.config.js` now follows the module type configured in `package.json`.
- `ava.config.*` files may be found that are outside your project directory.
##### Tests and assertions 🥼
- By default test files execute in worker threads, not child processes.
- `test.meta.file` and `test.meta.snapshotDirectory` are now file URL strings.
- Whitespace in test titles is now normalized. This could result in two tests being treated as having the same title, even though they are different in code. Thanks [@KillyMXI](https://togithub.com/KillyMXI)!
- `test()` and `t.try()` no longer take an array of test implementations. Use a loop instead.
- The `t.throws()` and `t.throwAsync()` assertions can no longer be called with a `null` value for the expectations argument.
- `test.cb()` and `t.end()` have been removed. Use async functions and [`util.promisify()`](https://nodejs.org/docs/latest/api/util.html#util_util_promisify_original) instead.
- `t.teardown()` now executes in last-in-first-out order.
##### Snapshots 📸
- Snapshots recorded using earlier AVA versions are no longer recognized. Run `npx ava -u` to rebuild your snapshots after upgrading.
- Snapshots no longer recognize React elements, instead we want to provide this functionality [through a plugin interface](https://togithub.com/avajs/ava/pull/2428)
- `t.snapshot()` no longer works in hooks.
- `t.snapshot()` no longer takes an options argument allowing you to customize the snapshot ID.
##### TypeScript 🪛
- The `instanceOf` expectation of `t.throws()` and `t.throwsAsync()` assertions must now be an `Error` constructor.
- You’re expected to use `test.macro()` when declaring macros.
- Implementation arguments now default to `unknown`.
- Types have been renamed. `Meta` replaces `MetaInterface`, other types with `Interface` suffixes now use the `Fn` suffix. There may be some other changes too. [`4b4b2f6`](https://togithub.com/avajs/ava/commit/4b4b2f63f184056b4038dfc692f99421038d3ec1)
- `t.throws()` and `t.throwsAsync()` return `undefined` when the assertion fails. The type definition now matches this behavior.
- Our TypeScript definitions are now tested against TypeScript 4.4
#### Other changes 🤓
- We’ve removed the non-verbose reporter because it proved too hard to maintain two subtly different reporter outputs. [We’d really like to rewrite the reporter.](https://togithub.com/avajs/ava/issues/2500)
- AVA's configuration files may now export promises or asynchronous factory methods.
- The `--config` argument may now point to a file that is not alongside the `package.json` file.
- When you use `t.timeout()`, AVA itself won’t time out until your test does. Thanks [@OhYash](https://togithub.com/OhYash)!
- Multi-line snapshot labels now render correctly in Markdown. Thanks [@KillyMXI](https://togithub.com/KillyMXI)!
- The reporters now clean up `.test` and `.spec` extensions from file names, as well as `test-` prefixes.
- Watch mode is better at detecting changes to snapshots and *not* rerunning tests.
#### New Contributors
- [@Fem-Fem](https://togithub.com/Fem-Fem) made their first contribution in [https://github.com/avajs/ava/pull/2750](https://togithub.com/avajs/ava/pull/2750)
- [@OhYash](https://togithub.com/OhYash) made their first contribution in [https://github.com/avajs/ava/pull/2758](https://togithub.com/avajs/ava/pull/2758)
- [@KillyMXI](https://togithub.com/KillyMXI) made their first contribution in [https://github.com/avajs/ava/pull/2773](https://togithub.com/avajs/ava/pull/2773)
- [@mcecode](https://togithub.com/mcecode) made their first contribution in [https://github.com/avajs/ava/pull/2794](https://togithub.com/avajs/ava/pull/2794)
- [@duncanfinney](https://togithub.com/duncanfinney) made their first contribution in [https://github.com/avajs/ava/pull/2820](https://togithub.com/avajs/ava/pull/2820)
- [@asaid-0](https://togithub.com/asaid-0) made their first contribution in [https://github.com/avajs/ava/pull/2788](https://togithub.com/avajs/ava/pull/2788)
- [@bompus](https://togithub.com/bompus) made their first contribution in [https://github.com/avajs/ava/pull/2843](https://togithub.com/avajs/ava/pull/2843)
- [@StefanoA1](https://togithub.com/StefanoA1) made their first contribution in [https://github.com/avajs/ava/pull/2849](https://togithub.com/avajs/ava/pull/2849)
- [@live627](https://togithub.com/live627) made their first contribution in [https://github.com/avajs/ava/pull/2851](https://togithub.com/avajs/ava/pull/2851)
- [@alessandroasm](https://togithub.com/alessandroasm) made their first contribution in [https://github.com/avajs/ava/pull/2863](https://togithub.com/avajs/ava/pull/2863)
- [@eltociear](https://togithub.com/eltociear) made their first contribution in [https://github.com/avajs/ava/pull/2870](https://togithub.com/avajs/ava/pull/2870)
- [@hamidbae](https://togithub.com/hamidbae) made their first contribution in [https://github.com/avajs/ava/pull/2878](https://togithub.com/avajs/ava/pull/2878)
- [@rrichardson](https://togithub.com/rrichardson) made their first contribution in [https://github.com/avajs/ava/pull/2910](https://togithub.com/avajs/ava/pull/2910)
- [@make-github-pseudonymous-again](https://togithub.com/make-github-pseudonymous-again) made their first contribution in [https://github.com/avajs/ava/pull/2913](https://togithub.com/avajs/ava/pull/2913)
- [@lightmare](https://togithub.com/lightmare) made their first contribution in [https://github.com/avajs/ava/pull/2918](https://togithub.com/avajs/ava/pull/2918)
**Full changelog since RC 1**: https://github.com/avajs/ava/compare/v4.0.0-rc.1...v4.0.0
**Full changelog since AVA 3**: https://github.com/avajs/ava/compare/v3.15.0...v4.0.0
### [`v3.15.0`](https://togithub.com/avajs/ava/releases/tag/v3.15.0): 3.15.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.14.0...v3.15.0)
#### Automatic snapshot file removal
When you stop using snapshots in a test file, the next time you run `ava --update-snapshots` we'll remove the left-over snapshot files. Thanks [@ninevra](https://togithub.com/ninevra)! [`4f093ab`](https://togithub.com/avajs/ava/commit/4f093ab)
#### TAP improvements
[@tymfear](https://togithub.com/tymfear) has been on a roll improving our TAP reporter. `t.log()` output is now compliant with the spec [`99ab93a`](https://togithub.com/avajs/ava/commit/99ab93a). Tests that did not run due to timeouts are now reported [`98595da`](https://togithub.com/avajs/ava/commit/98595dae58209a9062d0238c7a3dd7078a9962d1).
#### Next-generation configuration
AVA 4 will add full support for ESM configuration files as well as allowing you to have asynchronous factory functions [`a2f2614`](https://togithub.com/avajs/ava/commit/a2f2614cc1e34fb9a7aa204b37b3b25559f203d9). If you're using Node.js 12 or later you can opt-in to these features in AVA 3 by enabling the `nextGenConfig` experiment. Say in an `ava.config.mjs` file:
```js
export default {
nonSemVerExperiments: {
nextGenConfig: true
},
files: ['unit-tests/**/*]
};
```
This also allows you to pass an `.mjs` file using the `--config` argument.
With this experiment enabled, AVA will no longer have special treatment for `ava.config.js` files. Instead AVA follows Node.js' behavior, so if you've set [`"type": "module"`](https://nodejs.org/docs/latest/api/packages.html#packages_type) you must use ESM, and otherwise you must use CommonJS.
You mustn't have an `ava.config.mjs` file next to an `ava.config.js` or `ava.config.cjs` file.
***
See https://github.com/avajs/ava/compare/v3.14.0...v3.15.0 for all changes.
### [`v3.14.0`](https://togithub.com/avajs/ava/releases/tag/v3.14.0): 3.14.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.13.0...v3.14.0)
#### Snapshot ordering
With this release, snapshot files are now ordered based on test declaration, not completion. This makes it easier to compare the human-readable reports to your test file, and also stops the `.snap` from changing when the reports themselves don't. You'll want to rebuild snapshots after upgrading to this release to isolate any changes. Thanks [@ninevra](https://togithub.com/ninevra)! [`e66b54c`](https://togithub.com/avajs/ava/commit/e66b54ce61d8bb16bbcd15b7fb90893d02e5a65c)
#### Shared workers
We’ve been working on making AVA more extensible. One major step on this path is our new shared worker support: run code in the main process, communicate with test workers and influence execution. Find out more in our [shared workers recipe](https://togithub.com/avajs/ava/blob/master/docs/recipes/shared-workers.md).
***
See https://github.com/avajs/ava/compare/v3.13.0...v3.14.0 for all changes.
### [`v3.13.0`](https://togithub.com/avajs/ava/releases/tag/v3.13.0): 3.13.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.12.1...v3.13.0)
- `t.passed` can now be used in tests and teardown functions. Thanks [@tymfear](https://togithub.com/tymfear)! [`900dc6d`](https://togithub.com/avajs/ava/commit/900dc6d46a1f8728dddfab1e42caef1fa8a51c85)
- In AVA 4, you'll no longer be able to pass `null` as the expectation for `t.throws()` & `t.throwsAsync()`. You can opt in to this early by enabling the `disableNullExpectations` experiment. Thanks [@JSimoni42](https://togithub.com/JSimoni42)! [`f328a69`](https://togithub.com/avajs/ava/commit/f328a6933af7aca221b08f694bb14b03701eca68)
- The Enzyme recipe has been updated. Thanks [@jonathansamines](https://togithub.com/jonathansamines)! [`db5d2c3`](https://togithub.com/avajs/ava/commit/db5d2c369178b78dfbd899d002a141a05655ccdc)
- The TypeScript recipe has been updated. Thanks [@SephReed](https://togithub.com/SephReed)! [`a3379fa`](https://togithub.com/avajs/ava/commit/a3379fad3893468309a43b4b56d290f94933f082)
See https://github.com/avajs/ava/compare/v3.12.1...v3.13.0 for all changes.
### [`v3.12.1`](https://togithub.com/avajs/ava/releases/tag/v3.12.1): 3.12.1
[Compare Source](https://togithub.com/avajs/ava/compare/v3.12.0...v3.12.1)
#### Configure how AVA loads test files
Normally, AVA loads all files as CommonJS, except for `mjs` files and if you've configured `"type": "module"` in your `package.json`.
As an experiment, you can now configure how AVA loads other file extensions. This is useful if you want to use Node.js' [experimental loaders](https://nodejs.org/docs/latest/api/esm.html#esm_experimental_loaders) feature. Read more [in our documentation](https://togithub.com/avajs/ava/blob/master/docs/06-configuration.md#configuring-module-formats). Thank you [@macarie](https://togithub.com/macarie) for working on this! [`5c9dbb9`](https://togithub.com/avajs/ava/commit/5c9dbb96ad0beb7521e5051390478493250ba6b0)
#### Comparison bugfix
There was a bug in our [comparison library](https://togithub.com/concordancejs/concordance) which meant that negative-index properties on lists were not compared. This was fixed in a patch release, which will definitely be installed when you install AVA 3.12. Your tests may have been passing, even though they should have been failing. They'll fail now. Snapshots may also be different, causing tests to fail.
#### All changes
See https://github.com/avajs/ava/compare/v3.11.1...v3.12.1 for all changes.
Thank you [@AnthumChris](https://togithub.com/AnthumChris) for making sure our ESM example used ESM syntax ([`20bc781`](https://togithub.com/avajs/ava/commit/20bc7810536b3b968db5461ff4093bb5ae912050)).
### [`v3.12.0`](https://togithub.com/avajs/ava/compare/v3.11.1...v3.12.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v3.11.1...v3.12.0)
### [`v3.11.1`](https://togithub.com/avajs/ava/releases/tag/v3.11.1): 3.11.1
[Compare Source](https://togithub.com/avajs/ava/compare/v3.11.0...v3.11.1)
This release fixes corrupted output of the default reporter when test or program code writes to standard out. [`5ddc9fd`](https://togithub.com/avajs/ava/commit/5ddc9fda100205a5ca315a86e27a01be443b88b1)
Also, thanks to [@jonathansamines](https://togithub.com/jonathansamines) we've taken another step to using AVA to test AVA. [`1150991`](https://togithub.com/avajs/ava/commit/1150991ba1921cbf888438d46350894484356078)
See https://github.com/avajs/ava/compare/v3.11.0...v3.11.1 for all changes.
### [`v3.11.0`](https://togithub.com/avajs/ava/releases/tag/v3.11.0): 3.11.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.10.1...v3.11.0)
#### New `t.like()` assertion
Thanks to [@futpib](https://togithub.com/futpib) we now have a `t.like()` assertion [`19c4f35`](https://togithub.com/avajs/ava/commit/19c4f35fbae740268dedeeb4d450f813f2d5e85e):
In the following example, the `map` property of `value` must be deeply equal to that of `selector`. However `nested.qux` is ignored, because it's not in `selector`.
```js
t.like({
map: new Map([['foo', 'bar']]),
nested: {
baz: 'thud',
qux: 'quux'
}
}, {
map: new Map([['foo', 'bar']]),
nested: {
baz: 'thud',
}
})
```
Read more in the [`t.like()` assertion documentation](https://togithub.com/avajs/ava/blob/master/docs/03-assertions.md#likevalue-selector-message).
This assertion was [previously introduced](https://togithub.com/avajs/ava/releases/tag/v3.9.0) as an experiment.
#### VSCode 1.47 debugging improvements
You can now debug tests using the new JavaScript Debug Terminal in VSCode 1.47. We've updated our [debugging recipe](https://togithub.com/avajs/ava/blob/master/docs/recipes/debugging-with-vscode.md) accordingly. Thank you [@connor4312](https://togithub.com/connor4312) for the documentation updates and your work on VSCode! [`bc39bcc`](https://togithub.com/avajs/ava/commit/bc39bcc3ff92cb2979564ec2e69dc72be6509f78)
#### All changes
See https://github.com/avajs/ava/compare/v3.10.1...v3.11.0 for all changes.
### [`v3.10.1`](https://togithub.com/avajs/ava/releases/tag/v3.10.1): 3.10.1
[Compare Source](https://togithub.com/avajs/ava/compare/v3.10.0...v3.10.1)
### It's time for another AVA release 🎉
#### Restricting when you can update snapshots
When executing a subset of tests, through `--match` or or `.only()` or `.skip()`, you can no longer *also* update snapshots. This prevents you from accidentally deleting snapshots. Thank you [@bunysae](https://togithub.com/bunysae) for putting this together. [`f72fab4`](https://togithub.com/avajs/ava/commit/f72fab40160a413f4d7ab0208979fe3e721198ea)
If you are skipping a test that you can't immediately fix, but you still need to update snapshots, use `.failing()` instead.
#### Support for message strings in `t.timeout()` calls
Thanks to [@jonathansamines](https://togithub.com/jonathansamines) you can now provide a message string when using `t.timeout()`. This can be useful if your test depends on some other setup that may not have been completed: [`ca8ea45`](https://togithub.com/avajs/ava/commit/ca8ea45587ebefa5584d6a7aa50adf90840701cf)
```js
test('foo', t => {
t.timeout(100, 'make sure database has started');
// Write your assertions here
});
```
#### `t.try()` does not work in hooks
`t.try()` has never worked in hooks, but thanks to [@okyantoro](https://togithub.com/okyantoro) it now fails properly instead of crashing. [`d01db61`](https://togithub.com/avajs/ava/commit/d01db61ee5e9785d9f80ad5683cac21db4b96509)
#### `t.snapshot()` does not really work in hooks either
`t.snapshot()` sort of works in hooks, but we'll be removing this in AVA 4. You can opt in to this behavior by enabling the `disableSnapshotsInHooks` experiment. Again thank you [@okyantoro](https://togithub.com/okyantoro) [`d01db61`](https://togithub.com/avajs/ava/commit/d01db61ee5e9785d9f80ad5683cac21db4b96509).
#### Fixed TypeScript definition for `t.like()`
The [experimental `t.like()` assertion](https://togithub.com/avajs/ava/issues/2518) should now work better with TypeScript.
#### All changes
See https://github.com/avajs/ava/compare/v3.9.0...v3.10.1 for all changes.
### [`v3.10.0`](https://togithub.com/avajs/ava/compare/v3.9.0...v3.10.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v3.9.0...v3.10.0)
### [`v3.9.0`](https://togithub.com/avajs/ava/releases/tag/v3.9.0): 3.9.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.8.2...v3.9.0)
#### New experiments!
Thanks to [@futpib](https://togithub.com/futpib) we now have an experimental `t.like()` assertion [`19c4f35`](https://togithub.com/avajs/ava/commit/19c4f35fbae740268dedeeb4d450f813f2d5e85e):
In the following example, the `map` property of `value` must be deeply equal to that of `selector`. However `nested.qux` is ignored, because it's not in `selector`.
```js
t.like({
map: new Map([['foo', 'bar']]),
nested: {
baz: 'thud',
qux: 'quux'
}
}, {
map: new Map([['foo', 'bar']]),
nested: {
baz: 'thud',
}
})
```
Read more in the [`t.like()` assertion documentation](https://togithub.com/avajs/ava/blob/master/docs/03-assertions.md#likevalue-selector-message) and [let us know what you think](https://togithub.com/avajs/ava/issues/2518).
[@yjpa7145](https://togithub.com/yjpa7145) has contributed an experiment to reverse the order in which `t.teardown()` functions are run, so that the last registered function is called first [`952a017`](https://togithub.com/avajs/ava/commit/952a0177758c5601a72c2b050fc0308e7fa774c7). This will be the behavior in AVA 4.
To enable both these experiments update your AVA configuration:
**`package.json`**:
```json
{
"ava": {
"nonSemVerExperiments": {
"likeAssertion": true,
"reverseTeardowns": true
}
}
}
```
**`ava.config.js`**:
```js
export default {
nonSemVerExperiments: {
likeAssertion: true,
reverseTeardowns: true
}
}
```
#### Reporter changes
[@Michael55555](https://togithub.com/Michael55555) has helped us combine our reporter code into a single file [`b3866b6`](https://togithub.com/avajs/ava/commit/b3866b6b06c98862a19f6cb27ec28b643e2f00c7). We've also made some other tweaks and improvements [`baaf99a`](https://togithub.com/avajs/ava/commit/baaf99a792eed586678a0cf88864f3f0aa16bd7a). Let us know if anything seems amiss.
#### Improved diffs
[@bunysae](https://togithub.com/bunysae) made it so that missing or extraneous objects in diffs are printed with extra depth [https://github.com/concordancejs/concordance/pull/62](https://togithub.com/concordancejs/concordance/pull/62).
#### Farewell Node.js 13
Node.js 13 has reached end-of-life. Per our [support statement](https://togithub.com/avajs/ava/blob/master/docs/support-statement.md) we have removed it from our test matrix and supported version list.
#### All changes
See https://github.com/avajs/ava/compare/v3.8.2...v3.9.0 for all changes. Thank you [@paulrobertlloyd](https://togithub.com/paulrobertlloyd) and [@Autre31415](https://togithub.com/Autre31415) for contributing documentation improvements.
### [`v3.8.2`](https://togithub.com/avajs/ava/releases/tag/v3.8.2): 3.8.2
[Compare Source](https://togithub.com/avajs/ava/compare/v3.8.1...v3.8.2)
- Fix bad dependency [`fd92b4a`](https://togithub.com/avajs/ava/commit/fd92b4a3)
- Use configured depth limit for diffs in assertion failures, thanks [@bunysae](https://togithub.com/bunysae)! [`a5385a4`](https://togithub.com/avajs/ava/commit/a5385a41)
### [`v3.8.1`](https://togithub.com/avajs/ava/releases/tag/v3.8.1): 3.8.1
[Compare Source](https://togithub.com/avajs/ava/compare/v3.8.0...v3.8.1)
#### Node.js 14 support
Great news, this is a feature heavy release!
First off, though, AVA now officially supports Node.js 14. Thank you [@zackschuster](https://togithub.com/zackschuster)! [`2e7c76b`](https://togithub.com/avajs/ava/commit/2e7c76b85cb65a04605fed843ee2f571afc66c37)
#### Run tests at specific line numbers
AVA can now run tests at specific line numbers! 🎉
Given the following test file:
`test.js`
```js
1: test('unicorn', t => {
2: t.pass();
3: });
4:
5: test('rainbow', t => {
6: t.fail();
7: });
```
Running `npx ava test.js:2` for would run the `unicorn` test. In fact you could use any line number between `1` and `3`.
This feature is only available from the command line. It won't work if you use tools like `ts-node/register` or `@babel/register`, and it does not currently work with `@ava/babel` and `@ava/typescript`. See [https://github.com/avajs/ava/issues/2473](https://togithub.com/avajs/ava/issues/2473).
Thank you [@ulken](https://togithub.com/ulken) for your hard work and patience to get this shipped. [`1222ce9`](https://togithub.com/avajs/ava/commit/1222ce9538e4890c20af695e558e3ee490f5a41b)
#### Test-specific teardown functions
Sometimes tests have side-effects you want to clean up. [@ulken](https://togithub.com/ulken) has implemented `t.teardown()` which lets you register teardown functions *within* your test. They'll run once your test has finished, even if it failed: [`75cbc3b`](https://togithub.com/avajs/ava/commit/75cbc3b2a53d3b8530266b10bed71b838bc11fec)
test('read file', t => {
fs.writeFileSync('file.txt', '👋');
t.teardown(() => fs.unlinkSync('file.txt');
// Run assertions
});
#### Node.js internal in stack traces
Thanks to [@bunysae](https://togithub.com/bunysae), stack traces now include Node.js internals. Previously we removed them because we wanted you to focus on your own code, but quite often they do provide context. Now they're displayed, but somewhat dimmed. [`9a9351d`](https://togithub.com/avajs/ava/commit/9a9351ddbee9c6c76601210c5dd8f5b0d81cc3b0)
#### Watch mode with the default reporter
Watch mode with the default reporter once again accepts key input. Thanks [@pcdevil](https://togithub.com/pcdevil)! [`59c227d`](https://togithub.com/avajs/ava/commit/59c227d9c5261117d99e8e84693b9c89c3438a92)
#### ICYMI
- `afterEach()` and `afterEach.always()` hooks can now determine whether the test passed. Thank you [@bunysae](https://togithub.com/bunysae) for contributing this! [`8f312c0`](https://togithub.com/avajs/ava/commit/8f312c0)
```js
test('passes', t => t.pass());
test.afterEach(t => {
if (t.passed) {
// Do something because the test passed
} else {
// Do something because the test failed
}
});
```
- If you've ever wanted to save some files along with AVA's snapshots, you can now determine the directory path by accessing `test.meta.snapshotDirectory`. Thank you [@ulken](https://togithub.com/ulken)! [`cb5f9f7`](https://togithub.com/avajs/ava/commit/cb5f9f7)
#### All changes
See https://github.com/avajs/ava/compare/v3.7.1...v3.8.1 for all changes.
### [`v3.8.0`](https://togithub.com/avajs/ava/compare/v3.7.1...v3.8.0)
[Compare Source](https://togithub.com/avajs/ava/compare/v3.7.1...v3.8.0)
### [`v3.7.1`](https://togithub.com/avajs/ava/releases/tag/v3.7.1): 3.7.1
[Compare Source](https://togithub.com/avajs/ava/compare/v3.7.0...v3.7.1)
- Support parallel runs that do not need to run test files, courtesy of [@micaelmbagira](https://togithub.com/micaelmbagira) [`26c8326`](https://togithub.com/avajs/ava/commit/26c8326b)
### [`v3.7.0`](https://togithub.com/avajs/ava/releases/tag/v3.7.0): 3.7.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.6.0...v3.7.0)
If you've ever wanted to save some files along with AVA's snapshots, you can now determine the directory path by accessing `test.meta.snapshotDirectory`. Thank you [@ulken](https://togithub.com/ulken) ! [`cb5f9f7`](https://togithub.com/avajs/ava/commit/cb5f9f70879ee549837c31e577e01f87970164ed)
See https://github.com/avajs/ava/compare/v3.6.0...v3.7.0 for all changes.
### [`v3.6.0`](https://togithub.com/avajs/ava/releases/tag/v3.6.0): 3.6.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.5.2...v3.6.0)
`afterEach()` and `afterEach.always()` hooks can now determine whether the test passed. Thank you [@bunysae](https://togithub.com/bunysae) for contributing this! [`8f312c0`](https://togithub.com/avajs/ava/commit/8f312c0f2c978ba39baae0f701015d79af18cbde):
```js
test('passes', t => t.pass());
test.afterEach(t => {
if (t.passed) {
// Do something because the test passed
} else {
// Do something because the test failed
}
});
```
[@mbiesiad](https://togithub.com/mbiesiad) has diligently [translated our documentation to Polish](https://togithub.com/avajs/ava-docs/tree/master/pl_PL). Thank you [@kekuu](https://togithub.com/kekuu) for reviewing.
Also thank you [@timgates42](https://togithub.com/timgates42) for fixing a typo in our documentation. [`ede4f32`](https://togithub.com/avajs/ava/commit/ede4f322b4fa6263c8ae14ec04282ab06bb0afd4)
See https://github.com/avajs/ava/compare/v3.5.0...v3.6.0 for all changes.
### [`v3.5.2`](https://togithub.com/avajs/ava/compare/v3.5.1...v3.5.2)
[Compare Source](https://togithub.com/avajs/ava/compare/v3.5.1...v3.5.2)
### [`v3.5.1`](https://togithub.com/avajs/ava/compare/v3.5.0...v3.5.1)
[Compare Source](https://togithub.com/avajs/ava/compare/v3.5.0...v3.5.1)
### [`v3.5.0`](https://togithub.com/avajs/ava/releases/tag/v3.5.0): 3.5.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.4.0...v3.5.0)
When using `ava debug`, you can now specify the address or hostname the inspector is available through by using the `--host` option. Thanks to [@DYefimov](https://togithub.com/DYefimov) for contributing this! [`13d6651`](https://togithub.com/avajs/ava/commit/13d66519)
See https://github.com/avajs/ava/compare/v3.4.0...v3.5.0 for all changes. Spoiler alert: it's just this one 😉
### [`v3.4.0`](https://togithub.com/avajs/ava/releases/tag/v3.4.0): 3.4.0
[Compare Source](https://togithub.com/avajs/ava/compare/v3.3.0...v3.4.0)
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
[ ] If you want to rebase/retry this PR, check this box
This PR contains the following updates:
^0.25.0
->^6.0.0
Release Notes
avajs/ava (ava)
### [`v6.1.3`](https://togithub.com/avajs/ava/releases/tag/v6.1.3) [Compare Source](https://togithub.com/avajs/ava/compare/v6.1.2...v6.1.3) #### What's Changed - Include Node.js 22 in supported engines and test matrix by [@lenovouser](https://togithub.com/lenovouser) in [https://github.com/avajs/ava/pull/3328](https://togithub.com/avajs/ava/pull/3328) - Add VS Code debugging instructions for Yarn PnP projects by [@bitjson](https://togithub.com/bitjson) in [https://github.com/avajs/ava/pull/3317](https://togithub.com/avajs/ava/pull/3317) - Document `serial` configuration option by [@turadg](https://togithub.com/turadg) in [https://github.com/avajs/ava/pull/3321](https://togithub.com/avajs/ava/pull/3321) #### New Contributors - [@bitjson](https://togithub.com/bitjson) made their first contribution in [https://github.com/avajs/ava/pull/3317](https://togithub.com/avajs/ava/pull/3317) - [@turadg](https://togithub.com/turadg) made their first contribution in [https://github.com/avajs/ava/pull/3321](https://togithub.com/avajs/ava/pull/3321) - [@lenovouser](https://togithub.com/lenovouser) made their first contribution in [https://github.com/avajs/ava/pull/3328](https://togithub.com/avajs/ava/pull/3328) **Full Changelog**: https://github.com/avajs/ava/compare/v6.1.2...v6.1.3 ### [`v6.1.2`](https://togithub.com/avajs/ava/releases/tag/v6.1.2) [Compare Source](https://togithub.com/avajs/ava/compare/v6.1.1...v6.1.2) #### What's Changed - Fix throws assertions rejecting falsy values when `any: true` by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3313](https://togithub.com/avajs/ava/pull/3313) **Full Changelog**: https://github.com/avajs/ava/compare/v6.1.1...v6.1.2 ### [`v6.1.1`](https://togithub.com/avajs/ava/releases/tag/v6.1.1) [Compare Source](https://togithub.com/avajs/ava/compare/v6.1.0...v6.1.1) #### What's Changed - Fix 'previous failures' in watch mode always incrementing by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3297](https://togithub.com/avajs/ava/pull/3297) **Full Changelog**: https://github.com/avajs/ava/compare/v6.1.0...v6.1.1 ### [`v6.1.0`](https://togithub.com/avajs/ava/releases/tag/v6.1.0) [Compare Source](https://togithub.com/avajs/ava/compare/v6.0.1...v6.1.0) ##### What's Changed - Implement `registerCompletionHandler()` by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3283](https://togithub.com/avajs/ava/pull/3283) AVA 6 expects test code to clean up gracefully when the tests are complete, allowing the test environment (worker thread or child process) to exit. If this does not happen, AVA will report a timeout. You can use `registerCompletionHandler()` to perform any other clean up (or indeed exit the process) after AVA has completed the test execution. See [the description here](https://togithub.com/avajs/ava/blob/main/docs/08-common-pitfalls.md#timeouts-because-a-file-failed-to-exit). - Fix potential bug with watch mode when no failed test files are written by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3287](https://togithub.com/avajs/ava/pull/3287) - Fix `ava/internal` ESM type module by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3292](https://togithub.com/avajs/ava/pull/3292) **Full Changelog**: https://github.com/avajs/ava/compare/v6.0.1...v6.1.0 ### [`v6.0.1`](https://togithub.com/avajs/ava/releases/tag/v6.0.1) [Compare Source](https://togithub.com/avajs/ava/compare/v6.0.0...v6.0.1) #### What's Changed - Ensure watch mode works outside of its integration tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3273](https://togithub.com/avajs/ava/pull/3273) **Full Changelog**: https://github.com/avajs/ava/compare/v6.0.0...v6.0.1 ### [`v6.0.0`](https://togithub.com/avajs/ava/releases/tag/v6.0.0) [Compare Source](https://togithub.com/avajs/ava/compare/v5.3.1...v6.0.0) ##### Breaking Changes - AVA now requires Node.js versions 18.18, 20.8 or 21. Versions 14 and 16 are no longer supported. [#3251](https://togithub.com/avajs/ava/issues/3251) [#3216](https://togithub.com/avajs/ava/issues/3216) - When tests finish, worker threads or child processes are no longer exited through `proces.exit()`. If your test file does not exit on its own, the test run will time out. [#3260](https://togithub.com/avajs/ava/issues/3260) - Changes to watch mode [#3218](https://togithub.com/avajs/ava/issues/3218): - Watch mode can no longer be started via the `ava.config.*` or `package.json` configuration. - The `ignoredByWatcher` configuration has moved to the `watchMode` object, under the `ignoreChanges` key. - Watch mode now uses the built-in [`fs.watch()`](https://nodejs.org/api/fs.html#fswatchfilename-options-listener) in recursive mode. This is supported on Linux in Node.js 20 or newer, and MacOS and Windows in Node.js 18 as well. There are [caveats](https://nodejs.org/api/fs.html#caveats) to keep in mind. - Failed assertions now throw, meaning that any subsequent code is not executed. This also impacts the type definitions. [#3246](https://togithub.com/avajs/ava/issues/3246) - [Only native errors](https://nodejs.org/api/util.html#utiltypesisnativeerrorvalue) are now considered errors by the `t.throws()` and `t.throwsAsync()` assertions. [`Object.create(Error.prototype)` is **not** a native error](Object.create\(Error.prototype\)). [#3229](https://togithub.com/avajs/ava/issues/3229) - Changes to modules loaded through the `require` configuration [#3184](https://togithub.com/avajs/ava/issues/3184): - If such modules export a default function, this function is now invoked. - Local files are loaded through `@ava/typescript` if necessary. ##### Improvements ##### Rewritten watcher The watcher has been rewritten. It’s now built on [`fs.watch()`](https://nodejs.org/api/fs.html#fswatchfilename-options-listener) in recursive mode. [`@vercel/nft`](https://togithub.com/vercel/nft) is used to perform static dependency analysis, supporting ESM and CJS imports for JavaScript & TypeScript source files. This is a huge improvement over the previous runtime tracking of CJS imports, which did not support ESM. Integration with [`@ava/typescript`](https://togithub.com/avajs/typescript) has been improved. The watcher can now detect a change to a TypeScript source file, then wait for the corresponding build output to change before re-running tests. The ignoredByWatcher configuration has moved to the watchMode object, under the ignoreChanges key. See [#3218](https://togithub.com/avajs/ava/issues/3218) and [#3257](https://togithub.com/avajs/ava/issues/3257). ##### Failed assertions now throw Assertions now throw a `TestFailure` error when they fail. This error is not exported or documented and should not be used or thrown manually. You cannot catch this error in order to recover from a failure, use `t.try()` instead. All assertions except for `t.throws()` and `t.throwsAsync()` now return `true` when they pass. This is useful for some of the assertions in TypeScript where they can be used as a type guard. Committing a failed `t.try()` result now also throws. See [#3246](https://togithub.com/avajs/ava/issues/3246). ##### `t.throws()` and `t.throwsAsync()` can now expect any error By default, the thrown error (or rejection reason) must be a native error. You can change the assertion to expect any kind of error by setting `any: true` in the expectation object: ```js t.throws(() => { throw 'error' }, {any: true}) ``` See [#3245](https://togithub.com/avajs/ava/issues/3245) by [@adiSuper94](https://togithub.com/adiSuper94). ##### The `require` configuration is now more powerful It now loads ES modules. Local files are loaded through `@ava/typescript` if necessary, so you can also write these in TypeScript. If there is a default export function, it is invoked after loading. The function is awaited so it can do asynchronous setup before further modules are loaded. Arguments from the configuration can be passed to the function (as a \[[structured clone](https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)]\(https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)). See [#3184](https://togithub.com/avajs/ava/issues/3184) by [@sculpt0r](https://togithub.com/sculpt0r). ##### Other changes worth noting - Internal events can now be observed (experimentally). See [#3247](https://togithub.com/avajs/ava/issues/3247) by [@codetheweb](https://togithub.com/codetheweb). It’s experimental and undocumented. - You can now use `t.timeout.clear()` to restore a previous `t.timeout()`. [#3221](https://togithub.com/avajs/ava/issues/3221) - Code coverage is flushed to disk at opportune moments. [#3220](https://togithub.com/avajs/ava/issues/3220) ##### New Contributors - [@sculpt0r](https://togithub.com/sculpt0r) made their first contribution in [https://github.com/avajs/ava/pull/3184](https://togithub.com/avajs/ava/pull/3184) - [@ZachHaber](https://togithub.com/ZachHaber) made their first contribution in [https://github.com/avajs/ava/pull/3233](https://togithub.com/avajs/ava/pull/3233) - [@adiSuper94](https://togithub.com/adiSuper94) made their first contribution in [https://github.com/avajs/ava/pull/3245](https://togithub.com/avajs/ava/pull/3245) - [@bricker](https://togithub.com/bricker) made their first contribution in [https://github.com/avajs/ava/pull/3250](https://togithub.com/avajs/ava/pull/3250) **Full Changelog**: https://github.com/avajs/ava/compare/v5.3.1...v6.0.0 ### [`v5.3.1`](https://togithub.com/avajs/ava/releases/tag/v5.3.1) [Compare Source](https://togithub.com/avajs/ava/compare/v5.3.0...v5.3.1) #### What's Changed - Update `t.like()` to support Symbol keys and ignore non-enumerable properties by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3209](https://togithub.com/avajs/ava/pull/3209) - Fix circular selector detection in `t.like()` by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3212](https://togithub.com/avajs/ava/pull/3212) **Full Changelog**: https://github.com/avajs/ava/compare/v5.3.0...v5.3.1 ### [`v5.3.0`](https://togithub.com/avajs/ava/releases/tag/v5.3.0) [Compare Source](https://togithub.com/avajs/ava/compare/v5.2.0...v5.3.0) #### What's Changed - Support arrays in `t.like()` assertions by [@tommy-mitchell](https://togithub.com/tommy-mitchell) in [https://github.com/avajs/ava/pull/3185](https://togithub.com/avajs/ava/pull/3185) - Recognize typical assertion errors (`expect` and `assert`) and use their formatting by [@Irvenae](https://togithub.com/Irvenae) in [https://github.com/avajs/ava/pull/3187](https://togithub.com/avajs/ava/pull/3187) #### New Contributors - [@MartynasZilinskas](https://togithub.com/MartynasZilinskas) made their first contribution in [https://github.com/avajs/ava/pull/3172](https://togithub.com/avajs/ava/pull/3172) - [@flovogt](https://togithub.com/flovogt) made their first contribution in [https://github.com/avajs/ava/pull/3194](https://togithub.com/avajs/ava/pull/3194) - [@ondreian](https://togithub.com/ondreian) made their first contribution in [https://github.com/avajs/ava/pull/3192](https://togithub.com/avajs/ava/pull/3192) - [@tommy-mitchell](https://togithub.com/tommy-mitchell) made their first contribution in [https://github.com/avajs/ava/pull/3185](https://togithub.com/avajs/ava/pull/3185) - [@craigahobbs](https://togithub.com/craigahobbs) made their first contribution in [https://github.com/avajs/ava/pull/3198](https://togithub.com/avajs/ava/pull/3198) - [@Irvenae](https://togithub.com/Irvenae) made their first contribution in [https://github.com/avajs/ava/pull/3187](https://togithub.com/avajs/ava/pull/3187) **Full Changelog**: https://github.com/avajs/ava/compare/v5.2.0...v5.3.0 ### [`v5.2.0`](https://togithub.com/avajs/ava/releases/tag/v5.2.0) [Compare Source](https://togithub.com/avajs/ava/compare/v5.1.1...v5.2.0) #### What's Changed - Infer thrown error from expectations by [@tao-cumplido](https://togithub.com/tao-cumplido) in [https://github.com/avajs/ava/pull/3156](https://togithub.com/avajs/ava/pull/3156) #### New Contributors - [@tao-cumplido](https://togithub.com/tao-cumplido) made their first contribution in [https://github.com/avajs/ava/pull/3156](https://togithub.com/avajs/ava/pull/3156) **Full Changelog**: https://github.com/avajs/ava/compare/v5.1.1...v5.2.0 ### [`v5.1.1`](https://togithub.com/avajs/ava/releases/tag/v5.1.1) [Compare Source](https://togithub.com/avajs/ava/compare/v5.1.0...v5.1.1) #### What's Changed - Fix de-registration of shared workers to ensure AVA exits correctly, by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3149](https://togithub.com/avajs/ava/pull/3149) & [https://github.com/avajs/ava/pull/3151](https://togithub.com/avajs/ava/pull/3151) **Full Changelog**: https://github.com/avajs/ava/compare/v5.1.0...v5.1.1 ### [`v5.1.0`](https://togithub.com/avajs/ava/releases/tag/v5.1.0) [Compare Source](https://togithub.com/avajs/ava/compare/v5.0.1...v5.1.0) ##### What's Changed - Output logs for tests that remain pending when AVA exits by [@kevo1ution](https://togithub.com/kevo1ution) in [https://github.com/avajs/ava/pull/3125](https://togithub.com/avajs/ava/pull/3125) - Check for --config file extensions after they fail to load, allowing custom loaders by [@panva](https://togithub.com/panva) in [https://github.com/avajs/ava/pull/3135](https://togithub.com/avajs/ava/pull/3135) ##### New Contributors - [@kevo1ution](https://togithub.com/kevo1ution) made their first contribution in [https://github.com/avajs/ava/pull/3125](https://togithub.com/avajs/ava/pull/3125) - [@panva](https://togithub.com/panva) made their first contribution in [https://github.com/avajs/ava/pull/3135](https://togithub.com/avajs/ava/pull/3135) **Full Changelog**: https://github.com/avajs/ava/compare/v5.0.1...v5.1.0 ### [`v5.0.1`](https://togithub.com/avajs/ava/releases/tag/v5.0.1) [Compare Source](https://togithub.com/avajs/ava/compare/v5.0.0...v5.0.1) Despite the major version bump this is a relatively minor release. Node.js 12 is no longer supported. The type definitions are now distributed to be compatible with TypeScript 4.7 or newer. ```console npm install --save-dev ava ``` #### Breaking Changes - AVA now requires Node.js 14.19, 16.15 or 18. [https://github.com/avajs/ava/pull/3043](https://togithub.com/avajs/ava/pull/3043) - Type definition distribution assumes at least TypeScript 4.7. [https://github.com/avajs/ava/pull/3041](https://togithub.com/avajs/ava/pull/3041) - We're now exporting types rather than interfaces. [https://github.com/avajs/ava/pull/3096](https://togithub.com/avajs/ava/pull/3096) #### Improvements - Detect `process.exit()` called from tests by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3080](https://togithub.com/avajs/ava/pull/3080) - Improve test result accessibility by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3082](https://togithub.com/avajs/ava/pull/3082) - Parse for line numbers with latest supported ECMA version by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3063](https://togithub.com/avajs/ava/pull/3063) - Work around `os.cpus()` returning an empty array on unsupported platforms by [@catink123](https://togithub.com/catink123) in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095) - Count timeouts separately from the timed out tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3099](https://togithub.com/avajs/ava/pull/3099) - Cap idle timeouts to the maximum possible value by [@creestor](https://togithub.com/creestor) in [https://github.com/avajs/ava/pull/3100](https://togithub.com/avajs/ava/pull/3100) #### New Contributors - [@Prinzhorn](https://togithub.com/Prinzhorn) made their first contribution in [https://github.com/avajs/ava/pull/3073](https://togithub.com/avajs/ava/pull/3073) - [@catink123](https://togithub.com/catink123) made their first contribution in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095) - [@creestor](https://togithub.com/creestor) made their first contribution in [https://github.com/avajs/ava/pull/3100](https://togithub.com/avajs/ava/pull/3100) - [@DavidVujic](https://togithub.com/DavidVujic) made their first contribution in [https://github.com/avajs/ava/pull/3109](https://togithub.com/avajs/ava/pull/3109) **Full Changelog**: https://github.com/avajs/ava/compare/v4.3.3...v5.0.1 ### [`v5.0.0`](https://togithub.com/avajs/ava/releases/tag/v5.0.0) [Compare Source](https://togithub.com/avajs/ava/compare/v4.3.3...v5.0.0) Despite the major version bump this is a relatively minor release. Node.js 12 is no longer supported. The type definitions are now distributed to be compatible with TypeScript 4.7 or newer. It's available as a pre-release under the `next` tag for the next few weeks: ```console npm install --save-dev ava@next ``` #### Breaking Changes - AVA now requires Node.js 14.19, 16.15 or 18. [https://github.com/avajs/ava/pull/3043](https://togithub.com/avajs/ava/pull/3043) - Type definition distribution is no longer compatible with TypeScript versions before 4.7. [https://github.com/avajs/ava/pull/3041](https://togithub.com/avajs/ava/pull/3041) - We're now exporting types rather than interfaces. [https://github.com/avajs/ava/pull/3096](https://togithub.com/avajs/ava/pull/3096) #### Improvements - Detect `process.exit()` called from tests by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3080](https://togithub.com/avajs/ava/pull/3080) - Improve test result accessibility by [@gibson042](https://togithub.com/gibson042) in [https://github.com/avajs/ava/pull/3082](https://togithub.com/avajs/ava/pull/3082) - Parse for line numbers with latest supported ECMA version by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3063](https://togithub.com/avajs/ava/pull/3063) - Work around `os.cpus()` returning an empty array on unsupported platforms by [@catink123](https://togithub.com/catink123) in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095) - Count timeouts separately from the timed out tests by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3099](https://togithub.com/avajs/ava/pull/3099) #### New Contributors - [@Prinzhorn](https://togithub.com/Prinzhorn) made their first contribution in [https://github.com/avajs/ava/pull/3073](https://togithub.com/avajs/ava/pull/3073) - [@catink123](https://togithub.com/catink123) made their first contribution in [https://github.com/avajs/ava/pull/3095](https://togithub.com/avajs/ava/pull/3095) **Full Changelog**: https://github.com/avajs/ava/compare/v4.3.3...v5.0.0 ### [`v4.3.3`](https://togithub.com/avajs/ava/releases/tag/v4.3.3) [Compare Source](https://togithub.com/avajs/ava/compare/v4.3.2...v4.3.3) Add compatibility with Node.js 18.8, thanks [@Brooooooklyn](https://togithub.com/Brooooooklyn) [#3091](https://togithub.com/avajs/ava/issues/3091). **Full Changelog**: https://github.com/avajs/ava/compare/v4.3.1...v4.3.3 ### [`v4.3.2`](https://togithub.com/avajs/ava/compare/v4.3.1...v4.3.2) [Compare Source](https://togithub.com/avajs/ava/compare/v4.3.1...v4.3.2) ### [`v4.3.1`](https://togithub.com/avajs/ava/releases/tag/v4.3.1) [Compare Source](https://togithub.com/avajs/ava/compare/v4.3.0...v4.3.1) #### What's Changed - When translating line numbers, check whether the source map entry has original values in [https://github.com/avajs/ava/pull/3061](https://togithub.com/avajs/ava/pull/3061) - Report error when parsing for line number selection in [https://github.com/avajs/ava/pull/3062](https://togithub.com/avajs/ava/pull/3062) #### New Contributors - [@ericcornelissen](https://togithub.com/ericcornelissen) made their first contribution in [https://github.com/avajs/ava/pull/3048](https://togithub.com/avajs/ava/pull/3048) - [@AlencarGabriel](https://togithub.com/AlencarGabriel) made their first contribution in [https://github.com/avajs/ava/pull/3051](https://togithub.com/avajs/ava/pull/3051) - [@binyamin](https://togithub.com/binyamin) made their first contribution in [https://github.com/avajs/ava/pull/3028](https://togithub.com/avajs/ava/pull/3028) **Full Changelog**: https://github.com/avajs/ava/compare/v4.3.0...v4.3.1 ### [`v4.3.0`](https://togithub.com/avajs/ava/releases/tag/v4.3.0) [Compare Source](https://togithub.com/avajs/ava/compare/v4.2.0...v4.3.0) #### What's Changed - We're now shipping type definitions compatible with TypeScript 4.7, by [@RebeccaStevens](https://togithub.com/RebeccaStevens) in [https://github.com/avajs/ava/pull/3024](https://togithub.com/avajs/ava/pull/3024) - `throws` and `throwsAsync` assertions now take a function to test error messages, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/2995](https://togithub.com/avajs/ava/pull/2995) - Test failure summaries no longer duplicate `t.log()` messages, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3013](https://togithub.com/avajs/ava/pull/3013) - The number of timed-out tests is printed at the end of a run, by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3021](https://togithub.com/avajs/ava/pull/3021) - We've documented how to load multiple instances of the same "shared" worker, by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3009](https://togithub.com/avajs/ava/pull/3009) - Links to translated documentation have been updated, by [@forresst](https://togithub.com/forresst) in [https://github.com/avajs/ava/pull/3037](https://togithub.com/avajs/ava/pull/3037) - Node.js 17 has been removed from the test matrix, and Node.js 18 added in [https://github.com/avajs/ava/pull/3039](https://togithub.com/avajs/ava/pull/3039) **Full Changelog**: https://github.com/avajs/ava/compare/v4.2.0...v4.3.0 ### [`v4.2.0`](https://togithub.com/avajs/ava/releases/tag/v4.2.0) [Compare Source](https://togithub.com/avajs/ava/compare/v4.1.0...v4.2.0) #### What's Changed - Update Babel recipe for AVA 4 by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3000](https://togithub.com/avajs/ava/pull/3000) - Document how GitHub Actions can be configured for parallel builds by [@codetheweb](https://togithub.com/codetheweb) in [https://github.com/avajs/ava/pull/3007](https://togithub.com/avajs/ava/pull/3007) - Allow parallel builds to be disabled by [@il3ven](https://togithub.com/il3ven) in [https://github.com/avajs/ava/pull/3001](https://togithub.com/avajs/ava/pull/3001) - Improve typing of teardown methods by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/3003](https://togithub.com/avajs/ava/pull/3003) #### New Contributors - [@mefengl](https://togithub.com/mefengl) made their first contribution in [https://github.com/avajs/ava/pull/2999](https://togithub.com/avajs/ava/pull/2999) - [@il3ven](https://togithub.com/il3ven) made their first contribution in [https://github.com/avajs/ava/pull/3000](https://togithub.com/avajs/ava/pull/3000) - [@codetheweb](https://togithub.com/codetheweb) made their first contribution in [https://github.com/avajs/ava/pull/3007](https://togithub.com/avajs/ava/pull/3007) **Full Changelog**: https://github.com/avajs/ava/compare/v4.1.0...v4.2.0 ### [`v4.1.0`](https://togithub.com/avajs/ava/releases/tag/v4.1.0) [Compare Source](https://togithub.com/avajs/ava/compare/v4.0.1...v4.1.0) #### New features - Allow customized sorting of test files prior to execution using `sortTestFiles()` in `ava.config.js` files by [@erezrokah](https://togithub.com/erezrokah) in [https://github.com/avajs/ava/pull/2968](https://togithub.com/avajs/ava/pull/2968) - Warn when unsupported `ava.config.json` files are encountered by [@razor-x](https://togithub.com/razor-x) in [https://github.com/avajs/ava/pull/2962](https://togithub.com/avajs/ava/pull/2962) - Loosen type constraints for `deepEqual` assertion by [@RebeccaStevens](https://togithub.com/RebeccaStevens) in [https://github.com/avajs/ava/pull/2969](https://togithub.com/avajs/ava/pull/2969) #### Fixes - `ava --version` works again by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/2961](https://togithub.com/avajs/ava/pull/2961) #### New Contributors - [@sikrinick](https://togithub.com/sikrinick) made their first contribution in [https://github.com/avajs/ava/pull/2958](https://togithub.com/avajs/ava/pull/2958) - [@scottdotjs](https://togithub.com/scottdotjs) made their first contribution in [https://github.com/avajs/ava/pull/2954](https://togithub.com/avajs/ava/pull/2954) - [@gibson042](https://togithub.com/gibson042) made their first contribution in [https://github.com/avajs/ava/pull/2975](https://togithub.com/avajs/ava/pull/2975) - [@erezrokah](https://togithub.com/erezrokah) made their first contribution in [https://github.com/avajs/ava/pull/2968](https://togithub.com/avajs/ava/pull/2968) - [@razor-x](https://togithub.com/razor-x) made their first contribution in [https://github.com/avajs/ava/pull/2962](https://togithub.com/avajs/ava/pull/2962) - [@RebeccaStevens](https://togithub.com/RebeccaStevens) made their first contribution in [https://github.com/avajs/ava/pull/2969](https://togithub.com/avajs/ava/pull/2969) **Full Changelog**: https://github.com/avajs/ava/compare/v4.0.1...v4.1.0 ### [`v4.0.1`](https://togithub.com/avajs/ava/releases/tag/v4.0.1) [Compare Source](https://togithub.com/avajs/ava/compare/v4.0.0...v4.0.1) #### What's Changed - Fix encoding of large snapshot data by [@novemberborn](https://togithub.com/novemberborn) in [https://github.com/avajs/ava/pull/2936](https://togithub.com/avajs/ava/pull/2936) **Full Changelog**: https://github.com/avajs/ava/compare/v4.0.0...v4.0.1 ### [`v4.0.0`](https://togithub.com/avajs/ava/releases/tag/v4.0.0): AVA 4 [Compare Source](https://togithub.com/avajs/ava/compare/v3.15.0...v4.0.0) We're celebrating the new year with the official AVA 4 release! 🎊 ```console npm install -D ava ``` #### The cool new stuff 🆒 ##### Worker threads 🧑💼 By default, test files are now run in worker threads! Huge thanks to [@dnlup](https://togithub.com/dnlup) for landing this. Test files should run a little quicker, since it's easier to spin up a worker thread than a child process. You can use `--no-worker-threads` on the command line, or `workerThreads: false` in your AVA configuration, to fall back to using child processes. ##### Shared workers are no longer experimental 🎊 [Shared workers](https://togithub.com/avajs/ava/blob/main/docs/recipes/shared-workers.md) are no longer experimental. This is a powerful feature that loads a program in a worker thread in AVA's main process and then communicate with code running in the test workers. This enables your tests to better utilize shared resources during a test run, as well as providing opportunities to set up these resources before tests start (or clean them up after). When you use watch mode, shared workers remain loaded across runs. ##### Improved test selection 🤳 AVA selects test files based on your `package.json` or `ava.config.*` configuration files. When used on the CLI you can then provide patterns to select a subset of these files. You can now pass a folder and AVA will select the test files contained therein. Or you can provide a specific JavaScript file and AVA will run it even if it wasn’t selected by your configuration. If AVA finds files based on the configuration, but none of those were selected to the CLI arguments, it now prints a warning. ##### Better monorepo support 🚝 AVA now looks for `ava.config.*` files in parent directories, until it finds a directory with a `.git` directory (or file). This lets you specify AVA configuration at the top of your monorepo and still run AVA from within each package. ##### New snapshot format 📸 [@ninevra](https://togithub.com/ninevra) has worked tirelessly on landing a new snapshot format. It contains all information necessary to regenerate the report file. This allows for snapshots to be updated even if tests or assertions are skipped. ##### Previously failing test files run first 🏃 AVA now records which test files failed in the previous run. It then prioritizes testing these files when you run AVA again. Thanks [@bunysae](https://togithub.com/bunysae)! ##### ESM support 🤾 AVA 4 comes with full ES module support. Both ESM and CJS entrypoints are provided so that you can use it no matter how you manage your project. The `ava.config.js` file is now treated as CJS or ESM depending on module type configured in the `package.json` file. `ava.config.mjs` is now supported. If you use JavaScript files with non-standard extensions you can [configure AVA to import them](https://togithub.com/avajs/ava/blob/main/docs/06-configuration.md#configuring-module-formats). Note that [dependency tracking in watch mode does not yet work](https://togithub.com/avajs/ava/issues/2388) with ES modules. ##### Dedicated macro factory with type inference 🏭 `test.macro()` returns an object that can be used with `test()` and hooks. The `t.context` type is inherited from `test`. When used with TypeScript this gives much better type inference. Like with AVA 3, regular functions that also have a `title` property that is a string-returning function are supported. However the type checking won’t be as good. ##### Source maps 🗺 AVA now uses the source map support that’s built in to Node.js itself. This should give better stack traces. However we’re not sure yet what happens if you load a program that automatically modifies stack traces. Line number selection (where `npx ava test.js:5` runs the test at line 5) now uses source maps and so should work better with TypeScript files. ##### Assertions as type guards 💂 Most assertions now return a boolean indicating whether they passed. If you use AVA with TypeScript, you can use this as a type guard. Thanks [@jmarkham828](https://togithub.com/jmarkham828)! (This is not supported for `t.snapshot()` and the "throws" assertions.) #### Breaking changes 💥 AVA 4 requires at least Node.js 12.22, 14.17, 16.4 or 17. Node.js 10 is no longer supported. If installed globally, AVA will no longer use any locally installed version. Install locally and run with `npx ava` instead. When running test files from another project that also has AVA installed, those test files will now fail to run (because they'll try and use that other AVA version). ##### Ecosystem 🏞 - Support for `@ava/babel` has been removed. We haven’t seen enough [contributions to that package](https://togithub.com/avajs/babel) to recommend it for AVA 4. We’d be open to reinstating it in the future (just as we’d be open to support any other compilation provider). - As a consequence, “enhanced assertions” are no longer available. - AVA 4 requires `avajs/typescript@1.1` or newer. - Support for the [`esm` package](https://www.npmjs.com/package/esm) has been removed. ##### Configuration 🗒 - `ava.config.js` now follows the module type configured in `package.json`. - `ava.config.*` files may be found that are outside your project directory. ##### Tests and assertions 🥼 - By default test files execute in worker threads, not child processes. - `test.meta.file` and `test.meta.snapshotDirectory` are now file URL strings. - Whitespace in test titles is now normalized. This could result in two tests being treated as having the same title, even though they are different in code. Thanks [@KillyMXI](https://togithub.com/KillyMXI)! - `test()` and `t.try()` no longer take an array of test implementations. Use a loop instead. - The `t.throws()` and `t.throwAsync()` assertions can no longer be called with a `null` value for the expectations argument. - `test.cb()` and `t.end()` have been removed. Use async functions and [`util.promisify()`](https://nodejs.org/docs/latest/api/util.html#util_util_promisify_original) instead. - `t.teardown()` now executes in last-in-first-out order. ##### Snapshots 📸 - Snapshots recorded using earlier AVA versions are no longer recognized. Run `npx ava -u` to rebuild your snapshots after upgrading. - Snapshots no longer recognize React elements, instead we want to provide this functionality [through a plugin interface](https://togithub.com/avajs/ava/pull/2428) - `t.snapshot()` no longer works in hooks. - `t.snapshot()` no longer takes an options argument allowing you to customize the snapshot ID. ##### TypeScript 🪛 - The `instanceOf` expectation of `t.throws()` and `t.throwsAsync()` assertions must now be an `Error` constructor. - You’re expected to use `test.macro()` when declaring macros. - Implementation arguments now default to `unknown`. - Types have been renamed. `Meta` replaces `MetaInterface`, other types with `Interface` suffixes now use the `Fn` suffix. There may be some other changes too. [`4b4b2f6`](https://togithub.com/avajs/ava/commit/4b4b2f63f184056b4038dfc692f99421038d3ec1) - `t.throws()` and `t.throwsAsync()` return `undefined` when the assertion fails. The type definition now matches this behavior. - Our TypeScript definitions are now tested against TypeScript 4.4 #### Other changes 🤓 - We’ve removed the non-verbose reporter because it proved too hard to maintain two subtly different reporter outputs. [We’d really like to rewrite the reporter.](https://togithub.com/avajs/ava/issues/2500) - AVA's configuration files may now export promises or asynchronous factory methods. - The `--config` argument may now point to a file that is not alongside the `package.json` file. - When you use `t.timeout()`, AVA itself won’t time out until your test does. Thanks [@OhYash](https://togithub.com/OhYash)! - Multi-line snapshot labels now render correctly in Markdown. Thanks [@KillyMXI](https://togithub.com/KillyMXI)! - The reporters now clean up `.test` and `.spec` extensions from file names, as well as `test-` prefixes. - Watch mode is better at detecting changes to snapshots and *not* rerunning tests. #### New Contributors - [@Fem-Fem](https://togithub.com/Fem-Fem) made their first contribution in [https://github.com/avajs/ava/pull/2750](https://togithub.com/avajs/ava/pull/2750) - [@OhYash](https://togithub.com/OhYash) made their first contribution in [https://github.com/avajs/ava/pull/2758](https://togithub.com/avajs/ava/pull/2758) - [@KillyMXI](https://togithub.com/KillyMXI) made their first contribution in [https://github.com/avajs/ava/pull/2773](https://togithub.com/avajs/ava/pull/2773) - [@mcecode](https://togithub.com/mcecode) made their first contribution in [https://github.com/avajs/ava/pull/2794](https://togithub.com/avajs/ava/pull/2794) - [@duncanfinney](https://togithub.com/duncanfinney) made their first contribution in [https://github.com/avajs/ava/pull/2820](https://togithub.com/avajs/ava/pull/2820) - [@asaid-0](https://togithub.com/asaid-0) made their first contribution in [https://github.com/avajs/ava/pull/2788](https://togithub.com/avajs/ava/pull/2788) - [@bompus](https://togithub.com/bompus) made their first contribution in [https://github.com/avajs/ava/pull/2843](https://togithub.com/avajs/ava/pull/2843) - [@StefanoA1](https://togithub.com/StefanoA1) made their first contribution in [https://github.com/avajs/ava/pull/2849](https://togithub.com/avajs/ava/pull/2849) - [@live627](https://togithub.com/live627) made their first contribution in [https://github.com/avajs/ava/pull/2851](https://togithub.com/avajs/ava/pull/2851) - [@alessandroasm](https://togithub.com/alessandroasm) made their first contribution in [https://github.com/avajs/ava/pull/2863](https://togithub.com/avajs/ava/pull/2863) - [@eltociear](https://togithub.com/eltociear) made their first contribution in [https://github.com/avajs/ava/pull/2870](https://togithub.com/avajs/ava/pull/2870) - [@hamidbae](https://togithub.com/hamidbae) made their first contribution in [https://github.com/avajs/ava/pull/2878](https://togithub.com/avajs/ava/pull/2878) - [@rrichardson](https://togithub.com/rrichardson) made their first contribution in [https://github.com/avajs/ava/pull/2910](https://togithub.com/avajs/ava/pull/2910) - [@make-github-pseudonymous-again](https://togithub.com/make-github-pseudonymous-again) made their first contribution in [https://github.com/avajs/ava/pull/2913](https://togithub.com/avajs/ava/pull/2913) - [@lightmare](https://togithub.com/lightmare) made their first contribution in [https://github.com/avajs/ava/pull/2918](https://togithub.com/avajs/ava/pull/2918) **Full changelog since RC 1**: https://github.com/avajs/ava/compare/v4.0.0-rc.1...v4.0.0 **Full changelog since AVA 3**: https://github.com/avajs/ava/compare/v3.15.0...v4.0.0 ### [`v3.15.0`](https://togithub.com/avajs/ava/releases/tag/v3.15.0): 3.15.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.14.0...v3.15.0) #### Automatic snapshot file removal When you stop using snapshots in a test file, the next time you run `ava --update-snapshots` we'll remove the left-over snapshot files. Thanks [@ninevra](https://togithub.com/ninevra)! [`4f093ab`](https://togithub.com/avajs/ava/commit/4f093ab) #### TAP improvements [@tymfear](https://togithub.com/tymfear) has been on a roll improving our TAP reporter. `t.log()` output is now compliant with the spec [`99ab93a`](https://togithub.com/avajs/ava/commit/99ab93a). Tests that did not run due to timeouts are now reported [`98595da`](https://togithub.com/avajs/ava/commit/98595dae58209a9062d0238c7a3dd7078a9962d1). #### Next-generation configuration AVA 4 will add full support for ESM configuration files as well as allowing you to have asynchronous factory functions [`a2f2614`](https://togithub.com/avajs/ava/commit/a2f2614cc1e34fb9a7aa204b37b3b25559f203d9). If you're using Node.js 12 or later you can opt-in to these features in AVA 3 by enabling the `nextGenConfig` experiment. Say in an `ava.config.mjs` file: ```js export default { nonSemVerExperiments: { nextGenConfig: true }, files: ['unit-tests/**/*] }; ``` This also allows you to pass an `.mjs` file using the `--config` argument. With this experiment enabled, AVA will no longer have special treatment for `ava.config.js` files. Instead AVA follows Node.js' behavior, so if you've set [`"type": "module"`](https://nodejs.org/docs/latest/api/packages.html#packages_type) you must use ESM, and otherwise you must use CommonJS. You mustn't have an `ava.config.mjs` file next to an `ava.config.js` or `ava.config.cjs` file. *** See https://github.com/avajs/ava/compare/v3.14.0...v3.15.0 for all changes. ### [`v3.14.0`](https://togithub.com/avajs/ava/releases/tag/v3.14.0): 3.14.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.13.0...v3.14.0) #### Snapshot ordering With this release, snapshot files are now ordered based on test declaration, not completion. This makes it easier to compare the human-readable reports to your test file, and also stops the `.snap` from changing when the reports themselves don't. You'll want to rebuild snapshots after upgrading to this release to isolate any changes. Thanks [@ninevra](https://togithub.com/ninevra)! [`e66b54c`](https://togithub.com/avajs/ava/commit/e66b54ce61d8bb16bbcd15b7fb90893d02e5a65c) #### Shared workers We’ve been working on making AVA more extensible. One major step on this path is our new shared worker support: run code in the main process, communicate with test workers and influence execution. Find out more in our [shared workers recipe](https://togithub.com/avajs/ava/blob/master/docs/recipes/shared-workers.md). *** See https://github.com/avajs/ava/compare/v3.13.0...v3.14.0 for all changes. ### [`v3.13.0`](https://togithub.com/avajs/ava/releases/tag/v3.13.0): 3.13.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.12.1...v3.13.0) - `t.passed` can now be used in tests and teardown functions. Thanks [@tymfear](https://togithub.com/tymfear)! [`900dc6d`](https://togithub.com/avajs/ava/commit/900dc6d46a1f8728dddfab1e42caef1fa8a51c85) - In AVA 4, you'll no longer be able to pass `null` as the expectation for `t.throws()` & `t.throwsAsync()`. You can opt in to this early by enabling the `disableNullExpectations` experiment. Thanks [@JSimoni42](https://togithub.com/JSimoni42)! [`f328a69`](https://togithub.com/avajs/ava/commit/f328a6933af7aca221b08f694bb14b03701eca68) - The Enzyme recipe has been updated. Thanks [@jonathansamines](https://togithub.com/jonathansamines)! [`db5d2c3`](https://togithub.com/avajs/ava/commit/db5d2c369178b78dfbd899d002a141a05655ccdc) - The TypeScript recipe has been updated. Thanks [@SephReed](https://togithub.com/SephReed)! [`a3379fa`](https://togithub.com/avajs/ava/commit/a3379fad3893468309a43b4b56d290f94933f082) See https://github.com/avajs/ava/compare/v3.12.1...v3.13.0 for all changes. ### [`v3.12.1`](https://togithub.com/avajs/ava/releases/tag/v3.12.1): 3.12.1 [Compare Source](https://togithub.com/avajs/ava/compare/v3.12.0...v3.12.1) #### Configure how AVA loads test files Normally, AVA loads all files as CommonJS, except for `mjs` files and if you've configured `"type": "module"` in your `package.json`. As an experiment, you can now configure how AVA loads other file extensions. This is useful if you want to use Node.js' [experimental loaders](https://nodejs.org/docs/latest/api/esm.html#esm_experimental_loaders) feature. Read more [in our documentation](https://togithub.com/avajs/ava/blob/master/docs/06-configuration.md#configuring-module-formats). Thank you [@macarie](https://togithub.com/macarie) for working on this! [`5c9dbb9`](https://togithub.com/avajs/ava/commit/5c9dbb96ad0beb7521e5051390478493250ba6b0) #### Comparison bugfix There was a bug in our [comparison library](https://togithub.com/concordancejs/concordance) which meant that negative-index properties on lists were not compared. This was fixed in a patch release, which will definitely be installed when you install AVA 3.12. Your tests may have been passing, even though they should have been failing. They'll fail now. Snapshots may also be different, causing tests to fail. #### All changes See https://github.com/avajs/ava/compare/v3.11.1...v3.12.1 for all changes. Thank you [@AnthumChris](https://togithub.com/AnthumChris) for making sure our ESM example used ESM syntax ([`20bc781`](https://togithub.com/avajs/ava/commit/20bc7810536b3b968db5461ff4093bb5ae912050)). ### [`v3.12.0`](https://togithub.com/avajs/ava/compare/v3.11.1...v3.12.0) [Compare Source](https://togithub.com/avajs/ava/compare/v3.11.1...v3.12.0) ### [`v3.11.1`](https://togithub.com/avajs/ava/releases/tag/v3.11.1): 3.11.1 [Compare Source](https://togithub.com/avajs/ava/compare/v3.11.0...v3.11.1) This release fixes corrupted output of the default reporter when test or program code writes to standard out. [`5ddc9fd`](https://togithub.com/avajs/ava/commit/5ddc9fda100205a5ca315a86e27a01be443b88b1) Also, thanks to [@jonathansamines](https://togithub.com/jonathansamines) we've taken another step to using AVA to test AVA. [`1150991`](https://togithub.com/avajs/ava/commit/1150991ba1921cbf888438d46350894484356078) See https://github.com/avajs/ava/compare/v3.11.0...v3.11.1 for all changes. ### [`v3.11.0`](https://togithub.com/avajs/ava/releases/tag/v3.11.0): 3.11.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.10.1...v3.11.0) #### New `t.like()` assertion Thanks to [@futpib](https://togithub.com/futpib) we now have a `t.like()` assertion [`19c4f35`](https://togithub.com/avajs/ava/commit/19c4f35fbae740268dedeeb4d450f813f2d5e85e): In the following example, the `map` property of `value` must be deeply equal to that of `selector`. However `nested.qux` is ignored, because it's not in `selector`. ```js t.like({ map: new Map([['foo', 'bar']]), nested: { baz: 'thud', qux: 'quux' } }, { map: new Map([['foo', 'bar']]), nested: { baz: 'thud', } }) ``` Read more in the [`t.like()` assertion documentation](https://togithub.com/avajs/ava/blob/master/docs/03-assertions.md#likevalue-selector-message). This assertion was [previously introduced](https://togithub.com/avajs/ava/releases/tag/v3.9.0) as an experiment. #### VSCode 1.47 debugging improvements You can now debug tests using the new JavaScript Debug Terminal in VSCode 1.47. We've updated our [debugging recipe](https://togithub.com/avajs/ava/blob/master/docs/recipes/debugging-with-vscode.md) accordingly. Thank you [@connor4312](https://togithub.com/connor4312) for the documentation updates and your work on VSCode! [`bc39bcc`](https://togithub.com/avajs/ava/commit/bc39bcc3ff92cb2979564ec2e69dc72be6509f78) #### All changes See https://github.com/avajs/ava/compare/v3.10.1...v3.11.0 for all changes. ### [`v3.10.1`](https://togithub.com/avajs/ava/releases/tag/v3.10.1): 3.10.1 [Compare Source](https://togithub.com/avajs/ava/compare/v3.10.0...v3.10.1) ### It's time for another AVA release 🎉 #### Restricting when you can update snapshots When executing a subset of tests, through `--match` or or `.only()` or `.skip()`, you can no longer *also* update snapshots. This prevents you from accidentally deleting snapshots. Thank you [@bunysae](https://togithub.com/bunysae) for putting this together. [`f72fab4`](https://togithub.com/avajs/ava/commit/f72fab40160a413f4d7ab0208979fe3e721198ea) If you are skipping a test that you can't immediately fix, but you still need to update snapshots, use `.failing()` instead. #### Support for message strings in `t.timeout()` calls Thanks to [@jonathansamines](https://togithub.com/jonathansamines) you can now provide a message string when using `t.timeout()`. This can be useful if your test depends on some other setup that may not have been completed: [`ca8ea45`](https://togithub.com/avajs/ava/commit/ca8ea45587ebefa5584d6a7aa50adf90840701cf) ```js test('foo', t => { t.timeout(100, 'make sure database has started'); // Write your assertions here }); ``` #### `t.try()` does not work in hooks `t.try()` has never worked in hooks, but thanks to [@okyantoro](https://togithub.com/okyantoro) it now fails properly instead of crashing. [`d01db61`](https://togithub.com/avajs/ava/commit/d01db61ee5e9785d9f80ad5683cac21db4b96509) #### `t.snapshot()` does not really work in hooks either `t.snapshot()` sort of works in hooks, but we'll be removing this in AVA 4. You can opt in to this behavior by enabling the `disableSnapshotsInHooks` experiment. Again thank you [@okyantoro](https://togithub.com/okyantoro) [`d01db61`](https://togithub.com/avajs/ava/commit/d01db61ee5e9785d9f80ad5683cac21db4b96509). #### Fixed TypeScript definition for `t.like()` The [experimental `t.like()` assertion](https://togithub.com/avajs/ava/issues/2518) should now work better with TypeScript. #### All changes See https://github.com/avajs/ava/compare/v3.9.0...v3.10.1 for all changes. ### [`v3.10.0`](https://togithub.com/avajs/ava/compare/v3.9.0...v3.10.0) [Compare Source](https://togithub.com/avajs/ava/compare/v3.9.0...v3.10.0) ### [`v3.9.0`](https://togithub.com/avajs/ava/releases/tag/v3.9.0): 3.9.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.8.2...v3.9.0) #### New experiments! Thanks to [@futpib](https://togithub.com/futpib) we now have an experimental `t.like()` assertion [`19c4f35`](https://togithub.com/avajs/ava/commit/19c4f35fbae740268dedeeb4d450f813f2d5e85e): In the following example, the `map` property of `value` must be deeply equal to that of `selector`. However `nested.qux` is ignored, because it's not in `selector`. ```js t.like({ map: new Map([['foo', 'bar']]), nested: { baz: 'thud', qux: 'quux' } }, { map: new Map([['foo', 'bar']]), nested: { baz: 'thud', } }) ``` Read more in the [`t.like()` assertion documentation](https://togithub.com/avajs/ava/blob/master/docs/03-assertions.md#likevalue-selector-message) and [let us know what you think](https://togithub.com/avajs/ava/issues/2518). [@yjpa7145](https://togithub.com/yjpa7145) has contributed an experiment to reverse the order in which `t.teardown()` functions are run, so that the last registered function is called first [`952a017`](https://togithub.com/avajs/ava/commit/952a0177758c5601a72c2b050fc0308e7fa774c7). This will be the behavior in AVA 4. To enable both these experiments update your AVA configuration: **`package.json`**: ```json { "ava": { "nonSemVerExperiments": { "likeAssertion": true, "reverseTeardowns": true } } } ``` **`ava.config.js`**: ```js export default { nonSemVerExperiments: { likeAssertion: true, reverseTeardowns: true } } ``` #### Reporter changes [@Michael55555](https://togithub.com/Michael55555) has helped us combine our reporter code into a single file [`b3866b6`](https://togithub.com/avajs/ava/commit/b3866b6b06c98862a19f6cb27ec28b643e2f00c7). We've also made some other tweaks and improvements [`baaf99a`](https://togithub.com/avajs/ava/commit/baaf99a792eed586678a0cf88864f3f0aa16bd7a). Let us know if anything seems amiss. #### Improved diffs [@bunysae](https://togithub.com/bunysae) made it so that missing or extraneous objects in diffs are printed with extra depth [https://github.com/concordancejs/concordance/pull/62](https://togithub.com/concordancejs/concordance/pull/62). #### Farewell Node.js 13 Node.js 13 has reached end-of-life. Per our [support statement](https://togithub.com/avajs/ava/blob/master/docs/support-statement.md) we have removed it from our test matrix and supported version list. #### All changes See https://github.com/avajs/ava/compare/v3.8.2...v3.9.0 for all changes. Thank you [@paulrobertlloyd](https://togithub.com/paulrobertlloyd) and [@Autre31415](https://togithub.com/Autre31415) for contributing documentation improvements. ### [`v3.8.2`](https://togithub.com/avajs/ava/releases/tag/v3.8.2): 3.8.2 [Compare Source](https://togithub.com/avajs/ava/compare/v3.8.1...v3.8.2) - Fix bad dependency [`fd92b4a`](https://togithub.com/avajs/ava/commit/fd92b4a3) - Use configured depth limit for diffs in assertion failures, thanks [@bunysae](https://togithub.com/bunysae)! [`a5385a4`](https://togithub.com/avajs/ava/commit/a5385a41) ### [`v3.8.1`](https://togithub.com/avajs/ava/releases/tag/v3.8.1): 3.8.1 [Compare Source](https://togithub.com/avajs/ava/compare/v3.8.0...v3.8.1) #### Node.js 14 support Great news, this is a feature heavy release! First off, though, AVA now officially supports Node.js 14. Thank you [@zackschuster](https://togithub.com/zackschuster)! [`2e7c76b`](https://togithub.com/avajs/ava/commit/2e7c76b85cb65a04605fed843ee2f571afc66c37) #### Run tests at specific line numbers AVA can now run tests at specific line numbers! 🎉 Given the following test file: `test.js` ```js 1: test('unicorn', t => { 2: t.pass(); 3: }); 4: 5: test('rainbow', t => { 6: t.fail(); 7: }); ``` Running `npx ava test.js:2` for would run the `unicorn` test. In fact you could use any line number between `1` and `3`. This feature is only available from the command line. It won't work if you use tools like `ts-node/register` or `@babel/register`, and it does not currently work with `@ava/babel` and `@ava/typescript`. See [https://github.com/avajs/ava/issues/2473](https://togithub.com/avajs/ava/issues/2473). Thank you [@ulken](https://togithub.com/ulken) for your hard work and patience to get this shipped. [`1222ce9`](https://togithub.com/avajs/ava/commit/1222ce9538e4890c20af695e558e3ee490f5a41b) #### Test-specific teardown functions Sometimes tests have side-effects you want to clean up. [@ulken](https://togithub.com/ulken) has implemented `t.teardown()` which lets you register teardown functions *within* your test. They'll run once your test has finished, even if it failed: [`75cbc3b`](https://togithub.com/avajs/ava/commit/75cbc3b2a53d3b8530266b10bed71b838bc11fec) test('read file', t => { fs.writeFileSync('file.txt', '👋'); t.teardown(() => fs.unlinkSync('file.txt'); // Run assertions }); #### Node.js internal in stack traces Thanks to [@bunysae](https://togithub.com/bunysae), stack traces now include Node.js internals. Previously we removed them because we wanted you to focus on your own code, but quite often they do provide context. Now they're displayed, but somewhat dimmed. [`9a9351d`](https://togithub.com/avajs/ava/commit/9a9351ddbee9c6c76601210c5dd8f5b0d81cc3b0) #### Watch mode with the default reporter Watch mode with the default reporter once again accepts key input. Thanks [@pcdevil](https://togithub.com/pcdevil)! [`59c227d`](https://togithub.com/avajs/ava/commit/59c227d9c5261117d99e8e84693b9c89c3438a92) #### ICYMI - `afterEach()` and `afterEach.always()` hooks can now determine whether the test passed. Thank you [@bunysae](https://togithub.com/bunysae) for contributing this! [`8f312c0`](https://togithub.com/avajs/ava/commit/8f312c0) ```js test('passes', t => t.pass()); test.afterEach(t => { if (t.passed) { // Do something because the test passed } else { // Do something because the test failed } }); ``` - If you've ever wanted to save some files along with AVA's snapshots, you can now determine the directory path by accessing `test.meta.snapshotDirectory`. Thank you [@ulken](https://togithub.com/ulken)! [`cb5f9f7`](https://togithub.com/avajs/ava/commit/cb5f9f7) #### All changes See https://github.com/avajs/ava/compare/v3.7.1...v3.8.1 for all changes. ### [`v3.8.0`](https://togithub.com/avajs/ava/compare/v3.7.1...v3.8.0) [Compare Source](https://togithub.com/avajs/ava/compare/v3.7.1...v3.8.0) ### [`v3.7.1`](https://togithub.com/avajs/ava/releases/tag/v3.7.1): 3.7.1 [Compare Source](https://togithub.com/avajs/ava/compare/v3.7.0...v3.7.1) - Support parallel runs that do not need to run test files, courtesy of [@micaelmbagira](https://togithub.com/micaelmbagira) [`26c8326`](https://togithub.com/avajs/ava/commit/26c8326b) ### [`v3.7.0`](https://togithub.com/avajs/ava/releases/tag/v3.7.0): 3.7.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.6.0...v3.7.0) If you've ever wanted to save some files along with AVA's snapshots, you can now determine the directory path by accessing `test.meta.snapshotDirectory`. Thank you [@ulken](https://togithub.com/ulken) ! [`cb5f9f7`](https://togithub.com/avajs/ava/commit/cb5f9f70879ee549837c31e577e01f87970164ed) See https://github.com/avajs/ava/compare/v3.6.0...v3.7.0 for all changes. ### [`v3.6.0`](https://togithub.com/avajs/ava/releases/tag/v3.6.0): 3.6.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.5.2...v3.6.0) `afterEach()` and `afterEach.always()` hooks can now determine whether the test passed. Thank you [@bunysae](https://togithub.com/bunysae) for contributing this! [`8f312c0`](https://togithub.com/avajs/ava/commit/8f312c0f2c978ba39baae0f701015d79af18cbde): ```js test('passes', t => t.pass()); test.afterEach(t => { if (t.passed) { // Do something because the test passed } else { // Do something because the test failed } }); ``` [@mbiesiad](https://togithub.com/mbiesiad) has diligently [translated our documentation to Polish](https://togithub.com/avajs/ava-docs/tree/master/pl_PL). Thank you [@kekuu](https://togithub.com/kekuu) for reviewing. Also thank you [@timgates42](https://togithub.com/timgates42) for fixing a typo in our documentation. [`ede4f32`](https://togithub.com/avajs/ava/commit/ede4f322b4fa6263c8ae14ec04282ab06bb0afd4) See https://github.com/avajs/ava/compare/v3.5.0...v3.6.0 for all changes. ### [`v3.5.2`](https://togithub.com/avajs/ava/compare/v3.5.1...v3.5.2) [Compare Source](https://togithub.com/avajs/ava/compare/v3.5.1...v3.5.2) ### [`v3.5.1`](https://togithub.com/avajs/ava/compare/v3.5.0...v3.5.1) [Compare Source](https://togithub.com/avajs/ava/compare/v3.5.0...v3.5.1) ### [`v3.5.0`](https://togithub.com/avajs/ava/releases/tag/v3.5.0): 3.5.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.4.0...v3.5.0) When using `ava debug`, you can now specify the address or hostname the inspector is available through by using the `--host` option. Thanks to [@DYefimov](https://togithub.com/DYefimov) for contributing this! [`13d6651`](https://togithub.com/avajs/ava/commit/13d66519) See https://github.com/avajs/ava/compare/v3.4.0...v3.5.0 for all changes. Spoiler alert: it's just this one 😉 ### [`v3.4.0`](https://togithub.com/avajs/ava/releases/tag/v3.4.0): 3.4.0 [Compare Source](https://togithub.com/avajs/ava/compare/v3.3.0...v3.4.0)Configuration
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