Bump esbuild from 0.18.4 to 0.18.8

[dependabot]

Bumps esbuild from 0.18.4 to 0.18.8.

Release notes

Sourced from esbuild's releases.

v0.18.8

• Implement transforming async generator functions (#2780)

  With this release, esbuild will now transform async generator functions into normal generator functions when the configured target environment doesn't support them. These functions behave similar to normal generator functions except that they use the Symbol.asyncIterator interface instead of the Symbol.iterator interface and the iteration methods return promises. Here's an example (helper functions are omitted):

  // Original code
  async function* foo() {
    yield Promise.resolve(1)
    await new Promise(r => setTimeout(r, 100))
    yield *[Promise.resolve(2)]
  }
  async function bar() {
    for await (const x of foo()) {
      console.log(x)
    }
  }
  bar()
  // New output (with --target=es6)
  function foo() {
  return __asyncGenerator(this, null, function* () {
  yield Promise.resolve(1);
  yield new __await(new Promise((r) => setTimeout(r, 100)));
  yield* __yieldStar([Promise.resolve(2)]);
  });
  }
  function bar() {
  return __async(this, null, function* () {
  try {
  for (var iter = __forAwait(foo()), more, temp, error; more = !(temp = yield iter.next()).done; more = false) {
  const x = temp.value;
  console.log(x);
  }
  } catch (temp) {
  error = [temp];
  } finally {
  try {
  more && (temp = iter.return) && (yield temp.call(iter));
  } finally {
  if (error)
  throw error[0];
  }
  }
  });
  }
  bar();

  This is an older feature that was added to JavaScript in ES2018 but I didn't implement the transformation then because it's a rarely-used feature. Note that esbuild already added support for transforming for await loops (the other part of the asynchronous iteration proposal) a year ago, so support for asynchronous iteration should now be complete.

... (truncated)

Changelog

Sourced from esbuild's changelog.

0.18.8

• Implement transforming async generator functions (#2780)

  With this release, esbuild will now transform async generator functions into normal generator functions when the configured target environment doesn't support them. These functions behave similar to normal generator functions except that they use the Symbol.asyncIterator interface instead of the Symbol.iterator interface and the iteration methods return promises. Here's an example (helper functions are omitted):

  // Original code
  async function* foo() {
    yield Promise.resolve(1)
    await new Promise(r => setTimeout(r, 100))
    yield *[Promise.resolve(2)]
  }
  async function bar() {
    for await (const x of foo()) {
      console.log(x)
    }
  }
  bar()
  // New output (with --target=es6)
  function foo() {
  return __asyncGenerator(this, null, function* () {
  yield Promise.resolve(1);
  yield new __await(new Promise((r) => setTimeout(r, 100)));
  yield* __yieldStar([Promise.resolve(2)]);
  });
  }
  function bar() {
  return __async(this, null, function* () {
  try {
  for (var iter = __forAwait(foo()), more, temp, error; more = !(temp = yield iter.next()).done; more = false) {
  const x = temp.value;
  console.log(x);
  }
  } catch (temp) {
  error = [temp];
  } finally {
  try {
  more && (temp = iter.return) && (yield temp.call(iter));
  } finally {
  if (error)
  throw error[0];
  }
  }
  });
  }
  bar();

... (truncated)

Commits

• 9b233a4 publish 0.18.8 to npm
• d77b261 lower async generator functions (#3194)
• a1e4661 shorten some run-time helpers
• 880e78a fix hashes in tests
• 3bcf7f7 require an expression after yield *
• dbef654 throw errors when known symbols are missing
• cbc1137 forbid assigning to a constant when lowering using
• 1c11b59 wrap long import/export clauses
• adb8d19 publish 0.18.7 to npm
• 6c47cba fix an issue with SuppressedError
• Additional commits viewable in compare view

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[dependabot]

Superseded by #21.