Function run

packages/intl-durationformat/benchmark/instantiation-benchmark.ts:8–140

()

// due to 700+ locales being auto-loaded and slow locale matching

async function run() {
  const bench = new Bench({time: 1000})

  bench
    // Test instantiation with exact locale match (should be fast with optimization)
    .add('new DurationFormat("en")', () => {
      new DurationFormat('en')
    })

    // Test with common locales
    .add('new DurationFormat("en-US")', () => {
      new DurationFormat('en-US')
    })

    .add('new DurationFormat("ja")', () => {
      new DurationFormat('ja')
    })

    .add('new DurationFormat("fr")', () => {
      new DurationFormat('fr')
    })

    // Test fallback path with multi-level subtag removal
    .add('new DurationFormat("zh-Hans-CN") [fallback: zh-Hans]', () => {
      new DurationFormat('zh-Hans-CN')
    })

    .add('new DurationFormat("en-US-x-custom") [fallback: en-US → en]', () => {
      new DurationFormat('en-US-x-custom')
    })

    // Test with fuzzy matching (locale not in available set)
    .add('new DurationFormat("en-XZ") [fuzzy match]', () => {
      new DurationFormat('en-XZ')
    })

    // Test with options (still needs locale resolution)
    .add('new DurationFormat("en", {style: "digital"})', () => {
      new DurationFormat('en', {style: 'digital'})
    })

    // Test with multiple requested locales
    .add('new DurationFormat(["fr", "en"])', () => {
      new DurationFormat(['fr', 'en'])
    })

    // Test with lookup matcher (different algorithm)
    .add('new DurationFormat("en", {localeMatcher: "lookup"})', () => {
      new DurationFormat('en', {localeMatcher: 'lookup'})
    })

    // Test with best fit matcher (default)
    .add('new DurationFormat("en", {localeMatcher: "best fit"})', () => {
      new DurationFormat('en', {localeMatcher: 'best fit'})
    })

  await bench.run()