chore(deps): bump esbuild from 0.15.18 to 0.20.2

[dependabot[bot]]

Bumps esbuild from 0.15.18 to 0.20.2.

Release notes

Sourced from esbuild's releases.

v0.20.2

• Support TypeScript experimental decorators on abstract class fields (#3684)

  With this release, you can now use TypeScript experimental decorators on abstract class fields. This was silently compiled incorrectly in esbuild 0.19.7 and below, and was an error from esbuild 0.19.8 to esbuild 0.20.1. Code such as the following should now work correctly:

  // Original code
  const log = (x: any, y: string) => console.log(y)
  abstract class Foo { @log abstract foo: string }
  new class extends Foo { foo = '' }
  // Old output (with --loader=ts --tsconfig-raw={"compilerOptions":{"experimentalDecorators":true}})
  const log = (x, y) => console.log(y);
  class Foo {
  }
  new class extends Foo {
  foo = "";
  }();
  // New output (with --loader=ts --tsconfig-raw={"compilerOptions":{"experimentalDecorators":true}})
  const log = (x, y) => console.log(y);
  class Foo {
  }
  __decorateClass([
  log
  ], Foo.prototype, "foo", 2);
  new class extends Foo {
  foo = "";
  }();
  

• JSON loader now preserves __proto__ properties (#3700)

  Copying JSON source code into a JavaScript file will change its meaning if a JSON object contains the __proto__ key. A literal __proto__ property in a JavaScript object literal sets the prototype of the object instead of adding a property named __proto__, while a literal __proto__ property in a JSON object literal just adds a property named __proto__. With this release, esbuild will now work around this problem by converting JSON to JavaScript with a computed property key in this case:

  // Original code
  import data from 'data:application/json,{"__proto__":{"fail":true}}'
  if (Object.getPrototypeOf(data)?.fail) throw 'fail'
  // Old output (with --bundle)
  (() => {
  // <data:application/json,{"proto":{"fail":true}}>
  var json_proto_fail_true_default = { proto: { fail: true } };
  // entry.js
  if (Object.getPrototypeOf(json_proto_fail_true_default)?.fail)
  throw "fail";
  })();
  

... (truncated)

Changelog

Sourced from esbuild's changelog.

Changelog: 2022

This changelog documents all esbuild versions published in the year 2022 (versions 0.14.11 through 0.16.12).

0.16.12

• Loader defaults to js for extensionless files (#2776)

  Certain packages contain files without an extension. For example, the yargs package contains the file yargs/yargs which has no extension. Node, Webpack, and Parcel can all understand code that imports yargs/yargs because they assume that the file is JavaScript. However, esbuild was previously unable to understand this code because it relies on the file extension to tell it how to interpret the file. With this release, esbuild will now assume files without an extension are JavaScript files. This can be customized by setting the loader for "" (the empty string, representing files without an extension) to another loader. For example, if you want files without an extension to be treated as CSS instead, you can do that like this:

  • CLI:

    esbuild --bundle --loader:=css
    

  • JS:

    esbuild.build({
      bundle: true,
      loader: { '': 'css' },
    })
    

  • Go:

    api.Build(api.BuildOptions{
      Bundle: true,
      Loader: map[string]api.Loader{"": api.LoaderCSS},
    })
    

  In addition, the "type" field in package.json files now only applies to files with an explicit .js, .jsx, .ts, or .tsx extension. Previously it was incorrectly applied by esbuild to all files that had an extension other than .mjs, .mts, .cjs, or .cts including extensionless files. So for example an extensionless file in a "type": "module" package is now treated as CommonJS instead of ESM.

0.16.11

• Avoid a syntax error in the presence of direct eval (#2761)

  The behavior of nested function declarations in JavaScript depends on whether the code is run in strict mode or not. It would be problematic if esbuild preserved nested function declarations in its output because then the behavior would depend on whether the output was run in strict mode or not instead of respecting the strict mode behavior of the original source code. To avoid this, esbuild transforms nested function declarations to preserve the intended behavior of the original source code regardless of whether the output is run in strict mode or not:

  // Original code
  if (true) {
    function foo() {}
    console.log(!!foo)
    foo = null
    console.log(!!foo)
  }
  

... (truncated)

Commits

• 617edda publish 0.20.2 to npm
• 4780075 fix #3700: json loader preserves __proto__ keys
• 30bed2d better errors for invalid js decorator syntax
• 300eeb7 ts: allow non-null assertions in js decorators
• 4d997d9 fix #3698: yarn pnp edge case with tsconfig.json
• cf42954 resolver: improve some debug logging
• b0765ae fix some lints
• dfa6206 fix some comments (closes #3683)
• ae5cc17 fix #3684: abstract experimental decorators
• c809af0 fix #2388: allow consuming types without dom types (#3679)
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #2511.