Plugin object semantics

browser.plugin-semantics

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JSON

Selected signal results for external comparison. Field statuses, controls and exact values are retained.

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Source

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// Test source pending.

Definition

Plugin identity, lookup, coercion and clone outcomes by operation, including bounded enumeration coverage.

Find it in the repository

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

Execution contract

Signal: browser.plugin-semantics
Collector: browser.plugin-semantics
API / surface: core/signals/browser/plugin-semantics.ts
Timeout: 250 ms
Companion signals: None
Fixture inputs: Declared requests (listed below)

Exact request inputs

[
  {
    "key": "browser.plugin-semantics.plain-clone",
    "inputs": {
      "plain-clone": {
        "value": [
          1,
          "x",
          false
        ]
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.inventory",
    "inputs": {
      "inventory": {
        "pluginLimit": 16,
        "mimeLimit": 32
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.first-plugin-mimes",
    "inputs": {
      "first-plugin-mimes": {
        "pluginIndex": 0,
        "mimeLimit": 30
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.item-0",
    "inputs": {
      "item-0": {
        "index": 0,
        "convertedUint32": 0
      }
    },
    "controls": {
      "item-0": [
        {
          "relationshipId": "plugin.uint32-conversion",
          "class": "required",
          "preconditions": [
            "Web IDL unsigned long without Clamp/EnforceRange",
            "same collection"
          ]
        }
      ]
    }
  },
  {
    "key": "browser.plugin-semantics.item--1",
    "inputs": {
      "item--1": {
        "index": -1,
        "convertedUint32": 4294967295
      }
    },
    "controls": {
      "item--1": [
        {
          "relationshipId": "plugin.uint32-conversion",
          "class": "required",
          "preconditions": [
            "Web IDL unsigned long without Clamp/EnforceRange",
            "same collection"
          ]
        }
      ]
    }
  },
  {
    "key": "browser.plugin-semantics.item-4294967296",
    "inputs": {
      "item-4294967296": {
        "index": 4294967296,
        "convertedUint32": 0
      }
    },
    "controls": {
      "item-4294967296": [
        {
          "relationshipId": "plugin.uint32-conversion",
          "class": "required",
          "preconditions": [
            "Web IDL unsigned long without Clamp/EnforceRange",
            "same collection"
          ]
        }
      ]
    }
  },
  {
    "key": "browser.plugin-semantics.missing-name",
    "inputs": {
      "missing-name": {
        "name": "vendor-missing-control"
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.clone-plugins",
    "inputs": {
      "clone-plugins": {
        "target": "plugins"
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.clone-mimes",
    "inputs": {
      "clone-mimes": {
        "target": "mimes"
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.clone-first-plugin",
    "inputs": {
      "clone-first-plugin": {
        "target": "first-plugin"
      }
    },
    "controls": {}
  },
  {
    "key": "browser.plugin-semantics.clone-first-mime",
    "inputs": {
      "clone-first-mime": {
        "target": "first-mime"
      }
    },
    "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/browser.plugin-semantics. 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/browser/plugin-semantics"

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