Bump esbuild from 0.12.6 to 0.12.9

[dependabot]

Bumps esbuild from 0.12.6 to 0.12.9.

Release notes

Sourced from esbuild's releases.

v0.12.9

• Allow this with --define (#1361)

  You can now override the default value of top-level this with the --define feature. Top-level this defaults to being undefined in ECMAScript modules and exports in CommonJS modules. For example:

  // Original code
  ((obj) => {
    ...
  })(this);
  // Output with "--define:this=window"
  ((obj) => {
  ...
  })(window);

  Note that overriding what top-level this is will likely break code that uses it correctly. So this new feature is only useful in certain cases.

• Fix CSS minification issue with !important and duplicate declarations (#1372)

  Previously CSS with duplicate declarations for the same property where the first one was marked with !important was sometimes minified incorrectly. For example:

  .selector {
    padding: 10px !important;
    padding: 0;
  }

  This was incorrectly minified as .selector{padding:0}. The bug affected three properties: padding, margin, and border-radius. With this release, this code will now be minified as .selector{padding:10px!important;padding:0} instead which means there is no longer a difference between minified and non-minified code in this case.

v0.12.8

• Plugins can now specify sideEffects: false (#1009)

  The default path resolution behavior in esbuild determines if a given file can be considered side-effect free (in the Webpack-specific sense) by reading the contents of the nearest enclosing package.json file and looking for "sideEffects": false. However, up until now this was impossible to achieve in an esbuild plugin because there was no way of returning this metadata back to esbuild.

  With this release, esbuild plugins can now return sideEffects: false to mark a file as having no side effects. Here's an example:

  esbuild.build({
    entryPoints: ['app.js'],
    bundle: true,
    plugins: [{
      name: 'env-plugin',
      setup(build) {
        build.onResolve({ filter: /^env$/ }, args => ({
          path: args.path,
          namespace: 'some-ns',
          sideEffects: false,

... (truncated)

Changelog

Sourced from esbuild's changelog.

0.12.9

• Allow this with --define (#1361)

  You can now override the default value of top-level this with the --define feature. Top-level this defaults to being undefined in ECMAScript modules and exports in CommonJS modules. For example:

  // Original code
  ((obj) => {
    ...
  })(this);
  // Output with "--define:this=window"
  ((obj) => {
  ...
  })(window);

  Note that overriding what top-level this is will likely break code that uses it correctly. So this new feature is only useful in certain cases.

• Fix CSS minification issue with !important and duplicate declarations (#1372)

  Previously CSS with duplicate declarations for the same property where the first one was marked with !important was sometimes minified incorrectly. For example:

  .selector {
    padding: 10px !important;
    padding: 0;
  }

  This was incorrectly minified as .selector{padding:0}. The bug affected three properties: padding, margin, and border-radius. With this release, this code will now be minified as .selector{padding:10px!important;padding:0} instead which means there is no longer a difference between minified and non-minified code in this case.

0.12.8

• Plugins can now specify sideEffects: false (#1009)

  The default path resolution behavior in esbuild determines if a given file can be considered side-effect free (in the Webpack-specific sense) by reading the contents of the nearest enclosing package.json file and looking for "sideEffects": false. However, up until now this was impossible to achieve in an esbuild plugin because there was no way of returning this metadata back to esbuild.

  With this release, esbuild plugins can now return sideEffects: false to mark a file as having no side effects. Here's an example:

  esbuild.build({
    entryPoints: ['app.js'],
    bundle: true,
    plugins: [{
      name: 'env-plugin',
      setup(build) {
        build.onResolve({ filter: /^env$/ }, args => ({
          path: args.path,

... (truncated)

Commits

• 223150f publish 0.12.9 to npm
• a848ad6 fix #1372: css minification bug with !important
• 7a05678 fix #1361: allow "this" with "--define"
• 1eb9f0e publish 0.12.8 to npm
• 6b42c96 fix #1358: remove warning about source map comment
• 3a45460 Merge remote-tracking branch 'origin/master'
• 4a98ad7 publish 0.12.7 to npm
• 6ea75fe Allow OnResolve plugins to mark modules as side effect free (#1313)
• a5f1387 fix(linker): add missing esm flag (#1338)
• 6dc45ba fix #1357: "--metafile" with "--watch"
• Additional commits viewable in compare view

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[dependabot]

Superseded by #319.