Sourced from @​esbuild/darwin-arm64's releases.

v0.19.7

• Add support for bundling code that uses import attributes (#3384)

  JavaScript is gaining new syntax for associating a map of string key-value pairs with individual ESM imports. The proposal is still a work in progress and is still undergoing significant changes before being finalized. However, the first iteration has already been shipping in Chromium-based browsers for a while, and the second iteration has landed in V8 and is now shipping in node, so it makes sense for esbuild to support it. Here are the two major iterations of this proposal (so far):

  1. Import assertions (deprecated, will not be standardized)

     • Uses the assert keyword
     • Does not affect module resolution
     • Causes an error if the assertion fails
     • Shipping in Chrome 91+ (and in esbuild 0.11.22+)

  2. Import attributes (currently set to become standardized)

     • Uses the with keyword
     • Affects module resolution
     • Unknown attributes cause an error
     • Shipping in node 21+

  You can already use esbuild to bundle code that uses import assertions (the first iteration). However, this feature is mostly useless for bundlers because import assertions are not allowed to affect module resolution. It's basically only useful as an annotation on external imports, which esbuild will then preserve in the output for use in a browser (which would otherwise refuse to load certain imports).

  With this release, esbuild now supports bundling code that uses import attributes (the second iteration). This is much more useful for bundlers because they are allowed to affect module resolution, which means the key-value pairs can be provided to plugins. Here's an example, which uses esbuild's built-in support for the upcoming JSON module standard:

  // On static imports
  import foo from './package.json' with { type: 'json' }
  console.log(foo)
  // On dynamic imports
  const bar = await import('./package.json', { with: { type: 'json' } })
  console.log(bar)

  One important consequence of the change in semantics between import assertions and import attributes is that two imports with identical paths but different import attributes are now considered to be different modules. This is because the import attributes are provided to the loader, which might then use those attributes during loading. For example, you could imagine an image loader that produces an image of a different size depending on the import attributes.

  Import attributes are now reported in the metafile and are now provided to on-load plugins as a map in the with property. For example, here's an esbuild plugin that turns all imports with a type import attribute equal to 'cheese' into a module that exports the cheese emoji:

  const cheesePlugin = {
    name: 'cheese',
    setup(build) {
      build.onLoad({ filter: /.*/ }, args => {
        if (args.with.type === 'cheese') return {
          contents: `export default "🧀"`,
        }
      })
    }
  }
  require('esbuild').build({
  bundle: true,
  write: false,

... (truncated)

Sourced from @​esbuild/darwin-arm64's changelog.

0.19.7

• Add support for bundling code that uses import attributes (#3384)

  JavaScript is gaining new syntax for associating a map of string key-value pairs with individual ESM imports. The proposal is still a work in progress and is still undergoing significant changes before being finalized. However, the first iteration has already been shipping in Chromium-based browsers for a while, and the second iteration has landed in V8 and is now shipping in node, so it makes sense for esbuild to support it. Here are the two major iterations of this proposal (so far):

  1. Import assertions (deprecated, will not be standardized)

     • Uses the assert keyword
     • Does not affect module resolution
     • Causes an error if the assertion fails
     • Shipping in Chrome 91+ (and in esbuild 0.11.22+)

  2. Import attributes (currently set to become standardized)

     • Uses the with keyword
     • Affects module resolution
     • Unknown attributes cause an error
     • Shipping in node 21+

  You can already use esbuild to bundle code that uses import assertions (the first iteration). However, this feature is mostly useless for bundlers because import assertions are not allowed to affect module resolution. It's basically only useful as an annotation on external imports, which esbuild will then preserve in the output for use in a browser (which would otherwise refuse to load certain imports).

  With this release, esbuild now supports bundling code that uses import attributes (the second iteration). This is much more useful for bundlers because they are allowed to affect module resolution, which means the key-value pairs can be provided to plugins. Here's an example, which uses esbuild's built-in support for the upcoming JSON module standard:

  // On static imports
  import foo from './package.json' with { type: 'json' }
  console.log(foo)
  // On dynamic imports
  const bar = await import('./package.json', { with: { type: 'json' } })
  console.log(bar)

  One important consequence of the change in semantics between import assertions and import attributes is that two imports with identical paths but different import attributes are now considered to be different modules. This is because the import attributes are provided to the loader, which might then use those attributes during loading. For example, you could imagine an image loader that produces an image of a different size depending on the import attributes.

  Import attributes are now reported in the metafile and are now provided to on-load plugins as a map in the with property. For example, here's an esbuild plugin that turns all imports with a type import attribute equal to 'cheese' into a module that exports the cheese emoji:

  const cheesePlugin = {
    name: 'cheese',
    setup(build) {
      build.onLoad({ filter: /.*/ }, args => {
        if (args.with.type === 'cheese') return {
          contents: `export default "🧀"`,
        }
      })
    }
  }
  require('esbuild').build({
  bundle: true,

... (truncated)

• a7773b3 publish 0.19.7 to npm
• 2886b5d more adjustments to import assertions/attributes
• 2dad830 add basic support for import assertions
• 6b9737a fix test262 crash in v8 due to renamed test
• 0d9f765 fix #3230, fix #3326, fix #3394: update decorators
• 9fc1ed3 ast helpers: use a context object
• 00fa010 tree shaking: handle destructuring of an array
• f361c7f fix #3477: forbid --keep-names if not supported
• 4c64c19 compat-table: sort kangax feature map
• cd7b93f dev server: add a fallback favicon.ico handler
• Additional commits viewable in compare view

Sourced from @​esbuild/linux-arm64's releases.

v0.19.7

• Add support for bundling code that uses import attributes (#3384)

  JavaScript is gaining new syntax for associating a map of string key-value pairs with individual ESM imports. The proposal is still a work in progress and is still undergoing significant changes before being finalized. However, the first iteration has already been shipping in Chromium-based browsers for a while, and the second iteration has landed in V8 and is now shipping in node, so it makes sense for esbuild to support it. Here are the two major iterations of this proposal (so far):

  1. Import assertions (deprecated, will not be standardized)

     • Uses the assert keyword
     • Does not affect module resolution
     • Causes an error if the assertion fails
     • Shipping in Chrome 91+ (and in esbuild 0.11.22+)

  2. Import attributes (currently set to become standardized)

     • Uses the with keyword
     • Affects module resolution
     • Unknown attributes cause an error
     • Shipping in node 21+

  You can already use esbuild to bundle code that uses import assertions (the first iteration). However, this feature is mostly useless for bundlers because import assertions are not allowed to affect module resolution. It's basically only useful as an annotation on external imports, which esbuild will then preserve in the output for use in a browser (which would otherwise refuse to load certain imports).

  With this release, esbuild now supports bundling code that uses import attributes (the second iteration). This is much more useful for bundlers because they are allowed to affect module resolution, which means the key-value pairs can be provided to plugins. Here's an example, which uses esbuild's built-in support for the upcoming JSON module standard:

  // On static imports
  import foo from './package.json' with { type: 'json' }
  console.log(foo)
  // On dynamic imports
  const bar = await import('./package.json', { with: { type: 'json' } })
  console.log(bar)

  One important consequence of the change in semantics between import assertions and import attributes is that two imports with identical paths but different import attributes are now considered to be different modules. This is because the import attributes are provided to the loader, which might then use those attributes during loading. For example, you could imagine an image loader that produces an image of a different size depending on the import attributes.

  Import attributes are now reported in the metafile and are now provided to on-load plugins as a map in the with property. For example, here's an esbuild plugin that turns all imports with a type import attribute equal to 'cheese' into a module that exports the cheese emoji:

  const cheesePlugin = {
    name: 'cheese',
    setup(build) {
      build.onLoad({ filter: /.*/ }, args => {
        if (args.with.type === 'cheese') return {
          contents: `export default "🧀"`,
        }
      })
    }
  }
  require('esbuild').build({
  bundle: true,
  write: false,

... (truncated)

Sourced from @​esbuild/linux-arm64's changelog.

0.19.7

• Add support for bundling code that uses import attributes (#3384)

  JavaScript is gaining new syntax for associating a map of string key-value pairs with individual ESM imports. The proposal is still a work in progress and is still undergoing significant changes before being finalized. However, the first iteration has already been shipping in Chromium-based browsers for a while, and the second iteration has landed in V8 and is now shipping in node, so it makes sense for esbuild to support it. Here are the two major iterations of this proposal (so far):

  1. Import assertions (deprecated, will not be standardized)

     • Uses the assert keyword
     • Does not affect module resolution
     • Causes an error if the assertion fails
     • Shipping in Chrome 91+ (and in esbuild 0.11.22+)

  2. Import attributes (currently set to become standardized)

     • Uses the with keyword
     • Affects module resolution
     • Unknown attributes cause an error
     • Shipping in node 21+

  You can already use esbuild to bundle code that uses import assertions (the first iteration). However, this feature is mostly useless for bundlers because import assertions are not allowed to affect module resolution. It's basically only useful as an annotation on external imports, which esbuild will then preserve in the output for use in a browser (which would otherwise refuse to load certain imports).

  With this release, esbuild now supports bundling code that uses import attributes (the second iteration). This is much more useful for bundlers because they are allowed to affect module resolution, which means the key-value pairs can be provided to plugins. Here's an example, which uses esbuild's built-in support for the upcoming JSON module standard:

  // On static imports
  import foo from './package.json' with { type: 'json' }
  console.log(foo)
  // On dynamic imports
  const bar = await import('./package.json', { with: { type: 'json' } })
  console.log(bar)

  One important consequence of the change in semantics between import assertions and import attributes is that two imports with identical paths but different import attributes are now considered to be different modules. This is because the import attributes are provided to the loader, which might then use those attributes during loading. For example, you could imagine an image loader that produces an image of a different size depending on the import attributes.

  Import attributes are now reported in the metafile and are now provided to on-load plugins as a map in the with property. For example, here's an esbuild plugin that turns all imports with a type import attribute equal to 'cheese' into a module that exports the cheese emoji:

  const cheesePlugin = {
    name: 'cheese',
    setup(build) {
      build.onLoad({ filter: /.*/ }, args => {
        if (args.with.type === 'cheese') return {
          contents: `export default "🧀"`,
        }
      })
    }
  }
  require('esbuild').build({
  bundle: true,

... (truncated)

• a7773b3 publish 0.19.7 to npm
• 2886b5d more adjustments to import assertions/attributes
• 2dad830 add basic support for import assertions
• 6b9737a fix test262 crash in v8 due to renamed test
• 0d9f765 fix #3230, fix #3326, fix #3394: update decorators
• 9fc1ed3 ast helpers: use a context object
• 00fa010 tree shaking: handle destructuring of an array
• f361c7f fix #3477: forbid --keep-names if not supported
• 4c64c19 compat-table: sort kangax feature map
• cd7b93f dev server: add a fallback favicon.ico handler
• Additional commits viewable in compare view

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