Do not mark subpath imports as external with --packages=external (#2741)
Node has a feature called subpath imports where special import paths that start with # are resolved using the imports field in the package.json file of the enclosing package. The intent of the newly-added --packages=external setting is to exclude a package's dependencies from the bundle. Since a package's subpath imports are only accessible within that package, it's wrong for them to be affected by --packages=external. This release changes esbuild so that --packages=external no longer affects subpath imports.
Forbid invalid numbers in JSON files
Previously esbuild parsed numbers in JSON files using the same syntax as JavaScript. But starting from this release, esbuild will now parse them with JSON syntax instead. This means the following numbers are no longer allowed by esbuild in JSON files:
Legacy octal literals (non-zero integers starting with 0)
External imports now appear in imports arrays in the metafile (which is present when bundling with metafile: true) next to normal imports, but additionally have external: true to set them apart. This applies both to files in the inputs section and the outputs section. Here's an example:
This changelog documents all esbuild versions published in the year 2021 (versions 0.8.29 through 0.14.10).
0.14.10
Enable tree shaking of classes with lowered static fields (#175)
If the configured target environment doesn't support static class fields, they are converted into a call to esbuild's __publicField function instead. However, esbuild's tree-shaking pass treated this call as a side effect, which meant that all classes with static fields were ineligible for tree shaking. This release fixes the problem by explicitly ignoring calls to the __publicField function during tree shaking side-effect determination. Tree shaking is now enabled for these classes:
// Original code
class Foo { static foo = 'foo' }
class Bar { static bar = 'bar' }
new Bar()
// Old output (with --tree-shaking=true --target=es6)
class Foo {
}
__publicField(Foo, "foo", "foo");
class Bar {
}
__publicField(Bar, "bar", "bar");
new Bar();
// New output (with --tree-shaking=true --target=es6)
class Bar {
}
__publicField(Bar, "bar", "bar");
new Bar();
Treat --define:foo=undefined as an undefined literal instead of an identifier (#1407)
References to the global variable undefined are automatically replaced with the literal value for undefined, which appears as void 0 when printed. This allows for additional optimizations such as collapsing undefined ?? bar into just bar. However, this substitution was not done for values specified via --define:. As a result, esbuild could potentially miss out on certain optimizations in these cases. With this release, it's now possible to use --define: to substitute something with an undefined literal:
// Original code
let win = typeof window !== 'undefined' ? window : {}
// Old output (with --define:window=undefined --minify)
let win=typeof undefined!="undefined"?undefined:{};
// New output (with --define:window=undefined --minify)
let win={};
Passing this flag causes all debugger; statements to be removed from the output. This is similar to the drop_debugger: true flag available in the popular UglifyJS and Terser JavaScript minifiers.
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Bumps esbuild from 0.8.57 to 0.16.6.
Release notes
Sourced from esbuild's releases.
... (truncated)
Changelog
Sourced from esbuild's changelog.
... (truncated)
Commits
ee8e0dd
publish 0.16.6 to npmcfc3367
the previous change also fixes #1768f2f78ef
add external imports to metafile7fcfe73
more metafile test coveragedf7ce2a
feat: support npm_config_registry env variable (#2743)6ecf729
add flavor to json parsera98ba36
forbid invalid numbers in json filesb69ad87
fix #2741:--packages=external
+ subpath imports8ccfdd5
add failing test case for webpackbb9639c
publish 0.16.5 to npmDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
.Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)