Realm lifecycle

realms.lifecycle

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

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// Test source pending.

Definition

Document and WindowProxy preservation/replacement and worker continuity retain cross-realm claims; absolute time origins are excluded.

Find it in the repository

Collector source: core/signals/realms/observations.ts
Export: measurementModule · Signal factory
Field definitions: core/definitions/realms/lifecycle.ts
Capture membership: Product capture · common/capture/product.ts
Page registration: app/signals/registry.ts
Field projection: core/results/measurement.ts

Execution contract

Signal: realms.lifecycle
Collector: realms.lifecycle
API / surface: core/signals/realms/observations.ts
Timeout: 1500 ms
Companion signals: None
Fixture inputs: Same-origin responder: /measure/frame

Exact request inputs

[
  {
    "key": "realms.lifecycle.frame-initial",
    "inputs": {
      "frame-initial": {
        "sequence": 0,
        "context": "same-origin-frame"
      }
    },
    "controls": {
      "frame-initial": [
        {
          "relationshipId": "frame-context",
          "class": "required",
          "preconditions": [
            "owned same-origin frame reply"
          ]
        },
        {
          "relationshipId": "eligible-move-preserves-document",
          "class": "required",
          "preconditions": [
            "moveBefore executed",
            "initial reply available"
          ]
        },
        {
          "relationshipId": "replacement-document",
          "class": "permitted",
          "preconditions": [
            "ordinary reinsertion or navigation",
            "prior reply available"
          ]
        }
      ]
    }
  },
  {
    "key": "realms.lifecycle.frame-move",
    "inputs": {
      "frame-move": {
        "sequence": 1,
        "context": "same-origin-frame"
      }
    },
    "controls": {
      "frame-move": [
        {
          "relationshipId": "frame-context",
          "class": "required",
          "preconditions": [
            "owned same-origin frame reply"
          ]
        },
        {
          "relationshipId": "eligible-move-preserves-document",
          "class": "required",
          "preconditions": [
            "moveBefore executed",
            "initial reply available"
          ]
        },
        {
          "relationshipId": "replacement-document",
          "class": "permitted",
          "preconditions": [
            "ordinary reinsertion or navigation",
            "prior reply available"
          ]
        }
      ]
    }
  },
  {
    "key": "realms.lifecycle.frame-reinsert",
    "inputs": {
      "frame-reinsert": {
        "sequence": 2,
        "context": "same-origin-frame"
      }
    },
    "controls": {
      "frame-reinsert": [
        {
          "relationshipId": "frame-context",
          "class": "required",
          "preconditions": [
            "owned same-origin frame reply"
          ]
        },
        {
          "relationshipId": "eligible-move-preserves-document",
          "class": "required",
          "preconditions": [
            "moveBefore executed",
            "initial reply available"
          ]
        },
        {
          "relationshipId": "replacement-document",
          "class": "permitted",
          "preconditions": [
            "ordinary reinsertion or navigation",
            "prior reply available"
          ]
        }
      ]
    }
  },
  {
    "key": "realms.lifecycle.frame-replace",
    "inputs": {
      "frame-replace": {
        "sequence": 3,
        "context": "same-origin-frame"
      }
    },
    "controls": {
      "frame-replace": [
        {
          "relationshipId": "frame-context",
          "class": "required",
          "preconditions": [
            "owned same-origin frame reply"
          ]
        },
        {
          "relationshipId": "eligible-move-preserves-document",
          "class": "required",
          "preconditions": [
            "moveBefore executed",
            "initial reply available"
          ]
        },
        {
          "relationshipId": "replacement-document",
          "class": "permitted",
          "preconditions": [
            "ordinary reinsertion or navigation",
            "prior reply available"
          ]
        }
      ]
    }
  },
  {
    "key": "realms.lifecycle.worker-initial",
    "inputs": {
      "worker-initial": {
        "sequence": 4,
        "context": "dedicated-worker"
      }
    },
    "controls": {
      "worker-initial": [
        {
          "relationshipId": "worker-context",
          "class": "required",
          "preconditions": [
            "owned worker reply"
          ]
        },
        {
          "relationshipId": "new-worker-realm",
          "class": "required",
          "preconditions": [
            "previous worker terminated",
            "both replies available"
          ]
        }
      ]
    }
  },
  {
    "key": "realms.lifecycle.worker-replace",
    "inputs": {
      "worker-replace": {
        "sequence": 5,
        "context": "dedicated-worker"
      }
    },
    "controls": {
      "worker-replace": [
        {
          "relationshipId": "worker-context",
          "class": "required",
          "preconditions": [
            "owned worker reply"
          ]
        },
        {
          "relationshipId": "new-worker-realm",
          "class": "required",
          "preconditions": [
            "previous worker terminated",
            "both replies available"
          ]
        }
      ]
    }
  }
]

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/realms.lifecycle. 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/realms/observations"

const signal = measurementModule("/measure/frame")
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