Bump esbuild from 0.17.19 to 0.18.1

[dependabot]

Bumps esbuild from 0.17.19 to 0.18.1.

Release notes

Sourced from esbuild's releases.

v0.18.1

• Fill in null entries in input source maps (#3144)

  If esbuild bundles input files with source maps and those source maps contain a sourcesContent array with null entries, esbuild previously copied those null entries over to the output source map. With this release, esbuild will now attempt to fill in those null entries by looking for a file on the file system with the corresponding name from the sources array. This matches esbuild's existing behavior that automatically generates the sourcesContent array from the file system if the entire sourcesContent array is missing.

• Support /* @__KEY__ */ comments for mangling property names (#2574)

  Property mangling is an advanced feature that enables esbuild to minify certain property names, even though it's not possible to automatically determine that it's safe to do so. The safe property names are configured via regular expression such as --mangle-props=_$ (mangle all properties ending in _).

  Sometimes it's desirable to also minify strings containing property names, even though it's not possible to automatically determine which strings are property names. This release makes it possible to do this by annotating those strings with /* @__KEY__ */. This is a convention that Terser added earlier this year, and which esbuild is now following too: terser/terser#1365. Using it looks like this:

  // Original code
  console.log(
    [obj.mangle_, obj.keep],
    [obj.get('mangle_'), obj.get('keep')],
    [obj.get(/* @__KEY__ */ 'mangle_'), obj.get(/* @__KEY__ */ 'keep')],
  )
  // Old output (with --mangle-props=$)
  console.log(
  [obj.a, obj.keep],
  [obj.get("mangle"), obj.get("keep")],
  [obj.get(/* @KEY / "mangle_"), obj.get(/ @KEY */ "keep")]
  );
  // New output (with --mangle-props=$)
  console.log(
  [obj.a, obj.keep],
  [obj.get("mangle"), obj.get("keep")],
  [obj.get(/* @KEY / "a"), obj.get(/ @KEY */ "keep")]
  );

• Support /* @__NO_SIDE_EFFECTS__ */ comments for functions (#3149)

  Rollup has recently added support for /* @__NO_SIDE_EFFECTS__ */ annotations before functions to indicate that calls to these functions can be removed if the result is unused (i.e. the calls can be assumed to have no side effects). This release adds basic support for these to esbuild as well, which means esbuild will now parse these comments in input files and preserve them in output files. This should help people that use esbuild in combination with Rollup.

  Note that this doesn't necessarily mean esbuild will treat these calls as having no side effects, as esbuild's parallel architecture currently isn't set up to enable this type of cross-file tree-shaking information (tree-shaking decisions regarding a function call are currently local to the file they appear in). If you want esbuild to consider a function call to have no side effects, make sure you continue to annotate the function call with /* @__PURE__ */ (which is the previously-established convention for communicating this).

v0.18.0

This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of esbuild in your package.json file (recommended) or be using a version range syntax that only accepts patch upgrades such as ^0.17.0 or ~0.17.0. See npm's documentation about semver for more information.

The breaking changes in this release mainly focus on fixing some long-standing issues with esbuild's handling of tsconfig.json files. Here are all the changes in this release, in detail:

• Add a way to try esbuild online (#797)

  There is now a way to try esbuild live on esbuild's website without installing it: https://esbuild.github.io/try/. In addition to being able to more easily evaluate esbuild, this should also make it more efficient to generate esbuild bug reports. For example, you can use it to compare the behavior of different versions of esbuild on the same input. The state of the page is stored in the URL for easy sharing. Many thanks to @​hyrious for creating https://hyrious.me/esbuild-repl/, which was the main inspiration for this addition to esbuild's website.

  Two forms of build options are supported: either CLI-style (example) or JS-style (example). Both are converted into a JS object that's passed to esbuild's WebAssembly API. The CLI-style argument parser is a custom one that simulates shell quoting rules, and the JS-style argument parser is also custom and parses a superset of JSON (basically JSON5 + regular expressions). So argument parsing is an approximate simulation of what happens for real but hopefully it should be close enough.

... (truncated)

Changelog

Sourced from esbuild's changelog.

0.18.1

• Fill in null entries in input source maps (#3144)

  If esbuild bundles input files with source maps and those source maps contain a sourcesContent array with null entries, esbuild previously copied those null entries over to the output source map. With this release, esbuild will now attempt to fill in those null entries by looking for a file on the file system with the corresponding name from the sources array. This matches esbuild's existing behavior that automatically generates the sourcesContent array from the file system if the entire sourcesContent array is missing.

• Support /* @__KEY__ */ comments for mangling property names (#2574)

  Property mangling is an advanced feature that enables esbuild to minify certain property names, even though it's not possible to automatically determine that it's safe to do so. The safe property names are configured via regular expression such as --mangle-props=_$ (mangle all properties ending in _).

  Sometimes it's desirable to also minify strings containing property names, even though it's not possible to automatically determine which strings are property names. This release makes it possible to do this by annotating those strings with /* @__KEY__ */. This is a convention that Terser added earlier this year, and which esbuild is now following too: terser/terser#1365. Using it looks like this:

  // Original code
  console.log(
    [obj.mangle_, obj.keep],
    [obj.get('mangle_'), obj.get('keep')],
    [obj.get(/* @__KEY__ */ 'mangle_'), obj.get(/* @__KEY__ */ 'keep')],
  )
  // Old output (with --mangle-props=$)
  console.log(
  [obj.a, obj.keep],
  [obj.get("mangle"), obj.get("keep")],
  [obj.get(/* @KEY / "mangle_"), obj.get(/ @KEY */ "keep")]
  );
  // New output (with --mangle-props=$)
  console.log(
  [obj.a, obj.keep],
  [obj.get("mangle"), obj.get("keep")],
  [obj.get(/* @KEY / "a"), obj.get(/ @KEY */ "keep")]
  );

• Support /* @__NO_SIDE_EFFECTS__ */ comments for functions (#3149)

  Rollup has recently added support for /* @__NO_SIDE_EFFECTS__ */ annotations before functions to indicate that calls to these functions can be removed if the result is unused (i.e. the calls can be assumed to have no side effects). This release adds basic support for these to esbuild as well, which means esbuild will now parse these comments in input files and preserve them in output files. This should help people that use esbuild in combination with Rollup.

  Note that this doesn't necessarily mean esbuild will treat these calls as having no side effects, as esbuild's parallel architecture currently isn't set up to enable this type of cross-file tree-shaking information (tree-shaking decisions regarding a function call are currently local to the file they appear in). If you want esbuild to consider a function call to have no side effects, make sure you continue to annotate the function call with /* @__PURE__ */ (which is the previously-established convention for communicating this).

0.18.0

This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of esbuild in your package.json file (recommended) or be using a version range syntax that only accepts patch upgrades such as ^0.17.0 or ~0.17.0. See npm's documentation about semver for more information.

The breaking changes in this release mainly focus on fixing some long-standing issues with esbuild's handling of tsconfig.json files. Here are all the changes in this release, in detail:

• Add a way to try esbuild online (#797)

  There is now a way to try esbuild live on esbuild's website without installing it: https://esbuild.github.io/try/. In addition to being able to more easily evaluate esbuild, this should also make it more efficient to generate esbuild bug reports. For example, you can use it to compare the behavior of different versions of esbuild on the same input. The state of the page is stored in the URL for easy sharing. Many thanks to @​hyrious for creating https://hyrious.me/esbuild-repl/, which was the main inspiration for this addition to esbuild's website.

... (truncated)

Commits

• 3aa3ec2 publish 0.18.1 to npm
• 394941b #3149: @__NO_SIDE_EFFECTS__ on async functions
• eabcc87 forbid unexpected syntax after TS declare
• b4a1e70 ASI before TS keywords: abstract, declare, type
• c316bb6 add STypeScriptShared
• 8ae4f7c fix a crash when parsing typescript declare
• 3d81d6f @__PURE__ for file local @__NO_SIDE_EFFECTS__
• cf687c9 fix #3149: preserve /* @__NO_SIDE_EFFECTS__ */
• b2176c8 fix #2574: support /* @__KEY__ */ comments
• 6eb0e71 limit css features to browser engines
• Additional commits viewable in compare view

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🚮 Removed packages: esbuild@0.17.19