Replace @ungap/structured-clone with native structuredClone (#26890)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ChumpChief

examples/client-logger/app-insights-logger/jest.config.cjs

@@ -19,6 +19,7 @@ module.exports = {
 		Request: globalThis.Request,
 		Response: globalThis.Response,
 		Headers: globalThis.Headers,
+		structuredClone: globalThis.structuredClone,
 	},
 	moduleNameMapper: {
 		// Remove explicit .js from local paths to allow jest to find the .ts* files

packages/dds/tree/package.json

@@ -178,7 +178,6 @@
 		"@fluidframework/type-factory": "workspace:~",
 		"@sinclair/typebox": "^0.34.13",
 		"@tylerbu/sorted-btree-es6": "^2.1.1",
-		"@ungap/structured-clone": "^1.2.0",
 		"semver-ts": "^1.0.3",
 		"uuid": "^11.1.0"
 	},
@@ -204,7 +203,6 @@
 		"@types/easy-table": "^0.0.32",
 		"@types/mocha": "^10.0.10",
 		"@types/node": "catalog:types",
-		"@types/ungap__structured-clone": "^1.2.0",
 		"ajv": "^8.17.1",
 		"ajv-formats": "^3.0.1",
 		"c8": "^10.1.3",

packages/dds/tree/src/test/shared-tree-core/edit-manager/editManagerScenario.ts

@@ -10,7 +10,7 @@ import type { SessionId } from "@fluidframework/id-compressor";
 
 import type { ChangeFamilyEditor, ChangeRebaser } from "../../../core/index.js";
 import type { Commit, EditManager, SeqNumber } from "../../../shared-tree-core/index.js";
-import { brand, clone } from "../../../util/index.js";
+import { brand } from "../../../util/index.js";
 import { TestChange, type TestChangeFamily, asDelta } from "../../testChange.js";
 import { mintRevisionTag } from "../../utils.js";
 
@@ -470,7 +470,7 @@ export function runUnitTestScenario(
 						rebaser,
 						sessionId: `Join${joiners.length}` as SessionId,
 					}).manager;
-					const summary = clone(summarizer.getSummaryData());
+					const summary = structuredClone(summarizer.getSummaryData());
 					joiner.loadSummaryData(summary);
 					joiners.push(joiner);
 				}

packages/dds/tree/src/util/index.ts

@@ -66,7 +66,6 @@ export { StackyIterator } from "./stackyIterator.js";
 export {
 	asMutable,
 	balancedReduce,
-	clone,
 	compareSets,
 	getOrAddEmptyToMap,
 	getOrCreate,

packages/dds/tree/src/util/utils.ts

@@ -44,8 +44,6 @@ export function asMutable<T>(readonly: T): Mutable<T> {
 	return readonly as Mutable<T>;
 }
 
-export { default as clone } from "@ungap/structured-clone";
-
 /**
  * Checks whether or not the given object is a `readonly` array.
  *

packages/framework/client-logger/app-insights-logger/package.json

@@ -87,8 +87,7 @@
 	},
 	"dependencies": {
 		"@fluidframework/core-interfaces": "workspace:~",
-		"@microsoft/applicationinsights-web": "^2.8.11",
-		"@ungap/structured-clone": "^1.2.0"
+		"@microsoft/applicationinsights-web": "^2.8.11"
 	},
 	"devDependencies": {
 		"@arethetypeswrong/cli": "^0.18.2",
@@ -102,7 +101,6 @@
 		"@types/mocha": "^10.0.10",
 		"@types/node": "catalog:types",
 		"@types/sinon": "^17.0.3",
-		"@types/ungap__structured-clone": "^1.2.0",
 		"concurrently": "^9.2.1",
 		"copyfiles": "^2.4.1",
 		"cross-env": "^10.1.0",

packages/framework/client-logger/app-insights-logger/src/fluidAppInsightsLogger.ts

@@ -8,7 +8,6 @@ import type {
 	ITelemetryBaseLogger,
 } from "@fluidframework/core-interfaces";
 import type { ApplicationInsights } from "@microsoft/applicationinsights-web";
-import structuredClone from "@ungap/structured-clone";
 
 /**
  * The categories FF uses when instrumenting the code.

packages/loader/container-loader/package.json

@@ -185,7 +185,6 @@
 		"@fluidframework/driver-definitions": "workspace:~",
 		"@fluidframework/driver-utils": "workspace:~",
 		"@fluidframework/telemetry-utils": "workspace:~",
-		"@ungap/structured-clone": "^1.2.0",
 		"debug": "^4.3.4",
 		"double-ended-queue": "^2.1.0-0",
 		"events_pkg": "npm:events@^3.1.0",
@@ -209,7 +208,6 @@
 		"@types/mocha": "^10.0.10",
 		"@types/node": "catalog:types",
 		"@types/sinon": "^17.0.3",
-		"@types/ungap__structured-clone": "^1.2.0",
 		"c8": "^10.1.3",
 		"concurrently": "^9.2.1",
 		"copyfiles": "^2.4.1",

packages/loader/container-loader/src/container.ts

@@ -101,7 +101,6 @@ import {
 	loggerToMonitoringContext,
 	type ITelemetryErrorEventExt,
 } from "@fluidframework/telemetry-utils/internal";
-import structuredClone from "@ungap/structured-clone";
 import { v4 as uuid } from "uuid";
 
 import {