Local font resolution

Find it in the repository

Collector source

core/signals/fonts/local-resolution.ts

Export

measurementModule · Signal object

Field definitions

core/definitions/fonts/local-resolution.ts

Capture membership

Product capture · common/capture/product.ts

Page registration

app/signals/registry.ts

Field projection

core/results/measurement.ts

Execution contract

Signal

fonts.local-resolution

Collector

fonts.local-resolution

API / surface

core/signals/fonts/local-resolution.ts

Timeout

2750 ms

Companion signals

None

Fixture inputs

Inline owned corpora (listed below)

• core/fixtures/fonts/format-routing.json · sha256:50df75b949232db84e8ddb6d6360ee1c5a6b1c2a2ab2a053ae1e22048fa14128
• core/fixtures/fonts/local-resolution.ts · sha256:a3bcc7f7f66e9afe8054d45e4376598bbe9423572852f1ceb182b7cffbe4f127

[
  {
    "key": "fonts.local-resolution.responses",
    "inputs": {
      "controls": {
        "nonexistent": "Introspection Missing Face 8f396d",
        "fonts": [
          {
            "id": "outline",
            "sha256": "e6c548fe2fcc902295515dcabbd72167312fb120e895f7a0e1da9224b8e06924"
          },
          {
            "id": "sentinel",
            "sha256": "efd9c8b9b0db0839e33408de6549a917e9ac4b7245092958847c4e26642b270e"
          }
        ]
      },
      "segoe-ui": {
        "id": "segoe-ui",
        "family": "Segoe UI",
        "fullName": "Segoe UI",
        "postscriptName": "SegoeUI",
        "system": "menu",
        "text": "AWi0",
        "style": "normal 400",
        "size": 10,
        "synthesis": "none",
        "referenceFontVersion": null,
        "sameFaceProvenance": "unverified candidate names; supply font name-table/version evidence separately"
      },
      "arial": {
        "id": "arial",
        "family": "Arial",
        "fullName": "Arial",
        "postscriptName": "ArialMT",
        "system": "caption",
        "text": "AWi0",
        "style": "normal 400",
        "size": 10,
        "synthesis": "none",
        "referenceFontVersion": null,
        "sameFaceProvenance": "unverified candidate names; supply font name-table/version evidence separately"
      }
    },
    "controls": {}
  }
]

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/fonts.local-resolution. 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/fonts/local-resolution"

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