Intl controls

javascript.intl-controls

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// Test source pending.

Definition

Fixed formatting, segmentation and collation operations retain observed Unicode and permitted control variants.

Find it in the repository

Collector source: core/signals/javascript/builtins.ts
Export: measurementModule · Signal object
Field definitions: core/definitions/javascript/intl-controls.ts
Capture membership: Product capture · common/capture/product.ts
Page registration: app/signals/registry.ts
Field projection: core/results/measurement.ts

Execution contract

Signal: javascript.intl-controls
Collector: javascript.builtins
API / surface: core/signals/javascript/builtins.ts
Timeout: 500 ms
Companion signals: dom.xmljavascript.typed-arrays
Fixture inputs: Declared requests (listed below)

Exact request inputs

[
  {
    "key": "javascript.intl-controls.intl-number",
    "inputs": {
      "intl-number": {
        "locale": "en-US",
        "options": {
          "useGrouping": false,
          "minimumFractionDigits": 2,
          "maximumFractionDigits": 2
        },
        "value": 1234.5
      }
    },
    "controls": {
      "intl-number": [
        {
          "relationshipId": "E08.number-parts",
          "class": "required",
          "preconditions": [
            "same formatter/value"
          ]
        }
      ]
    }
  },
  {
    "key": "javascript.intl-controls.intl-date",
    "inputs": {
      "intl-date": {
        "locale": "en-US",
        "options": {
          "timeZone": "UTC",
          "year": "numeric",
          "month": "2-digit",
          "day": "2-digit"
        },
        "epochMs": 0
      }
    },
    "controls": {
      "intl-date": [
        {
          "relationshipId": "E08.date-parts",
          "class": "required",
          "preconditions": [
            "same formatter/instant",
            "UTC explicitly requested"
          ]
        }
      ]
    }
  },
  {
    "key": "javascript.intl-controls.intl-collator",
    "inputs": {
      "intl-collator": {
        "locale": "en-US",
        "usage": "sort",
        "sensitivity": "variant"
      }
    },
    "controls": {
      "intl-collator": [
        {
          "relationshipId": "E08.collator-consistency",
          "class": "required",
          "preconditions": [
            "same collator",
            "same two strings"
          ]
        }
      ]
    }
  },
  {
    "key": "javascript.intl-controls.segment-en-us",
    "inputs": {
      "segment-en-US": {
        "locale": "en-US",
        "granularity": "grapheme",
        "text": "Á 👩‍💻 x"
      }
    },
    "controls": {
      "segment-en-US": [
        {
          "relationshipId": "E08.segmentation-reconstruction",
          "class": "required",
          "preconditions": [
            "same input/segmenter"
          ]
        }
      ]
    }
  },
  {
    "key": "javascript.intl-controls.segment-ja-jp",
    "inputs": {
      "segment-ja-JP": {
        "locale": "ja-JP",
        "granularity": "grapheme",
        "text": "Á 👩‍💻 x"
      }
    },
    "controls": {
      "segment-ja-JP": [
        {
          "relationshipId": "E08.segmentation-reconstruction",
          "class": "required",
          "preconditions": [
            "same input/segmenter"
          ]
        }
      ]
    }
  }
]

One collector runs per invocation. Results and JSON select this signal’s fields; any companions execute in the same collector.

Generated source manifest lists runtime files, fixture URLs and content digests for this build. The Source tab provides a copyable console sample.

Run and edit locally

From the repository root, start the Astro app, then open /signals/javascript.intl-controls. Edit the collector source and reload the page to load its new build.

pnpm run dev:web

In a browser module served by this repository’s Vite graph:

import { createCollector } from "/core/collect"
import { measurementModule } from "/core/signals/javascript/builtins"

const signal = measurementModule
const collector = createCollector()
const suite = { signals: [signal] }
const result = await collector.collect(suite)

Reuse the collector owner for repeated calls so collection can enforce cleanup. This returns the collector’s raw result; app/signals/projection.ts selects the retained fields shown on this page.

rg -n 'measurementModule' core app tests
pnpm run check
pnpm run test tests/unit/app/focused-projection.test.ts