build: update to TypeScript 5.9 beta

crisbeto · alan-agius4 · commit 7560097a1b1f · 2025-07-21T10:58:29.000+02:00
Updates the repo to the TypeScript 5.9 beta and widens the peer dependency ranges.
diff --git a/WORKSPACE b/WORKSPACE
@@ -204,8 +204,8 @@ http_archive(
 load("@aspect_rules_ts//ts:repositories.bzl", "rules_ts_dependencies")
 
 rules_ts_dependencies(
-    # Obtained by: curl --silent https://registry.npmjs.org/typescript/5.8.3 | jq -r '.dist.integrity'
-    ts_integrity = "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+    # Obtained by: curl --silent https://registry.npmjs.org/typescript/5.9.0-beta | jq -r '.dist.integrity'
+    ts_integrity = "sha512-p91qoTdwWKj9YEBYavmGiBn0DF4OBElzw4pW4oPbK4HeCfr/SDz9+yviVWshZXGvGvFCJ3AVQ+J7F1UZXc23QQ==",
     ts_version_from = "//:package.json",
 )
 
@@ -273,7 +273,7 @@ esbuild_register_toolchains(
 
 git_repository(
     name = "rules_angular",
-    commit = "88ddcf8cccbfef57f8cc3dda4881f18ec739428e",
+    commit = "8bf9ae3fa3017ec12877908533001daed9c6ce83",
     remote = "https://github.com/devversion/rules_angular.git",
 )
 
diff --git a/goldens/public-api/angular_devkit/schematics/index.api.md b/goldens/public-api/angular_devkit/schematics/index.api.md
@@ -274,7 +274,7 @@ export interface DirEntry {
 // @public (undocumented)
 export interface DryRunCreateEvent {
     // (undocumented)
-    content: Buffer;
+    content: ArrayBufferLike;
     // (undocumented)
     kind: 'create';
     // (undocumented)
@@ -334,7 +334,7 @@ export class DryRunSink extends HostSink {
 // @public (undocumented)
 export interface DryRunUpdateEvent {
     // (undocumented)
-    content: Buffer;
+    content: ArrayBufferLike;
     // (undocumented)
     kind: 'update';
     // (undocumented)
@@ -495,13 +495,13 @@ export class HostSink extends SimpleSinkBase {
     // (undocumented)
     _done(): Observable<void>;
     // (undocumented)
-    protected _filesToCreate: Map<Path, Buffer<ArrayBufferLike>>;
+    protected _filesToCreate: Map<Path, ArrayBufferLike>;
     // (undocumented)
     protected _filesToDelete: Set<Path>;
     // (undocumented)
     protected _filesToRename: Set<[Path, Path]>;
     // (undocumented)
-    protected _filesToUpdate: Map<Path, Buffer<ArrayBufferLike>>;
+    protected _filesToUpdate: Map<Path, ArrayBufferLike>;
     // (undocumented)
     protected _force: boolean;
     // (undocumented)
diff --git a/package.json b/package.json
@@ -46,20 +46,20 @@
   },
   "homepage": "https://github.com/angular/angular-cli",
   "devDependencies": {
-    "@angular/animations": "20.2.0-next.0",
+    "@angular/animations": "20.2.0-next.1",
     "@angular/cdk": "20.1.0-rc.0",
-    "@angular/common": "20.2.0-next.0",
-    "@angular/compiler": "20.2.0-next.0",
-    "@angular/compiler-cli": "20.2.0-next.0",
-    "@angular/core": "20.2.0-next.0",
-    "@angular/forms": "20.2.0-next.0",
-    "@angular/localize": "20.2.0-next.0",
+    "@angular/common": "20.2.0-next.1",
+    "@angular/compiler": "20.2.0-next.1",
+    "@angular/compiler-cli": "20.2.0-next.1",
+    "@angular/core": "20.2.0-next.1",
+    "@angular/forms": "20.2.0-next.1",
+    "@angular/localize": "20.2.0-next.1",
     "@angular/material": "20.1.0-rc.0",
     "@angular/ng-dev": "https://github.com/angular/dev-infra-private-ng-dev-builds.git#7cdb4cce7349f791492eee3ac1f84e2a0e243287",
-    "@angular/platform-browser": "20.2.0-next.0",
-    "@angular/platform-server": "20.2.0-next.0",
-    "@angular/router": "20.2.0-next.0",
-    "@angular/service-worker": "20.2.0-next.0",
+    "@angular/platform-browser": "20.2.0-next.1",
+    "@angular/platform-server": "20.2.0-next.1",
+    "@angular/router": "20.2.0-next.1",
+    "@angular/service-worker": "20.2.0-next.1",
     "@bazel/bazelisk": "1.26.0",
     "@bazel/buildifier": "8.2.1",
     "@eslint/compat": "1.3.1",
@@ -140,7 +140,7 @@
     "tar": "^7.0.0",
     "ts-node": "^10.9.1",
     "tslib": "2.8.1",
-    "typescript": "5.8.3",
+    "typescript": "5.9.0-beta",
     "undici": "7.11.0",
     "unenv": "^1.10.0",
     "verdaccio": "6.1.5",
@@ -173,6 +173,6 @@
     }
   },
   "resolutions": {
-    "typescript": "5.8.3"
+    "typescript": "5.9.0-beta"
   }
 }
diff --git a/packages/angular/build/package.json b/packages/angular/build/package.json
@@ -73,7 +73,7 @@
     "postcss": "^8.4.0",
     "tailwindcss": "^2.0.0 || ^3.0.0 || ^4.0.0",
     "tslib": "^2.3.0",
-    "typescript": ">=5.8 <5.9",
+    "typescript": ">=5.8 <6.0",
     "vitest": "^3.1.1"
   },
   "peerDependenciesMeta": {
diff --git a/packages/angular/build/src/builders/application/tests/behavior/rebuild-errors_spec.ts b/packages/angular/build/src/builders/application/tests/behavior/rebuild-errors_spec.ts
@@ -149,12 +149,12 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
         [
           async () => {
             // Add invalid block syntax
-            await harness.appendToFile('src/app/app.component.html', '@one');
+            await harness.appendToFile('src/app/app.component.html', '@if-one');
           },
           async ({ logs }) => {
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@one'),
+                message: jasmine.stringContaining('@if-one'),
               }),
             );
 
@@ -165,42 +165,42 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
           async ({ logs }) => {
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@one'),
+                message: jasmine.stringContaining('@if-one'),
               }),
             );
 
             // Add more invalid block syntax
-            await harness.appendToFile('src/app/app.component.html', '@two');
+            await harness.appendToFile('src/app/app.component.html', '@if-two');
           },
           async ({ logs }) => {
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@one'),
+                message: jasmine.stringContaining('@if-one'),
               }),
             );
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@two'),
+                message: jasmine.stringContaining('@if-two'),
               }),
             );
 
             // Add more invalid block syntax
-            await harness.appendToFile('src/app/app.component.html', '@three');
+            await harness.appendToFile('src/app/app.component.html', '@if-three');
           },
           async ({ logs }) => {
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@one'),
+                message: jasmine.stringContaining('@if-one'),
               }),
             );
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@two'),
+                message: jasmine.stringContaining('@if-two'),
               }),
             );
             expect(logs).toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@three'),
+                message: jasmine.stringContaining('@if-three'),
               }),
             );
 
@@ -211,17 +211,17 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
           ({ logs }) => {
             expect(logs).not.toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@one'),
+                message: jasmine.stringContaining('@if-one'),
               }),
             );
             expect(logs).not.toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@two'),
+                message: jasmine.stringContaining('@if-two'),
               }),
             );
             expect(logs).not.toContain(
               jasmine.objectContaining<logging.LogEntry>({
-                message: jasmine.stringContaining('@three'),
+                message: jasmine.stringContaining('@if-three'),
               }),
             );
           },
diff --git a/packages/angular/build/src/tools/esbuild/javascript-transformer.ts b/packages/angular/build/src/tools/esbuild/javascript-transformer.ts
@@ -125,7 +125,7 @@ export class JavaScriptTransformer {
         {
           // The below is disable as with Yarn PNP this causes build failures with the below message
           // `Unable to deserialize cloned data`.
-          transferList: process.versions.pnp ? undefined : [data.buffer],
+          transferList: process.versions.pnp ? undefined : [data.buffer as ArrayBuffer],
         },
       )) as Uint8Array;
 
diff --git a/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts b/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts
@@ -38,11 +38,17 @@ export function subscribeToWorkflow(
         );
         break;
       case 'update':
-        logs.push(`${colors.cyan('UPDATE')} ${eventPath} (${event.content.length} bytes)`);
+        logs.push(
+          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+          `${colors.cyan('UPDATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+        );
         files.add(eventPath);
         break;
       case 'create':
-        logs.push(`${colors.green('CREATE')} ${eventPath} (${event.content.length} bytes)`);
+        logs.push(
+          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+          `${colors.green('CREATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+        );
         files.add(eventPath);
         break;
       case 'delete':
diff --git a/packages/angular_devkit/architect/testing/test-project-host.ts b/packages/angular_devkit/architect/testing/test-project-host.ts
@@ -122,7 +122,7 @@ export class TestProjectHost extends NodeJsSyncHost {
         content = content.buffer.slice(content.byteOffset, content.byteOffset + content.byteLength);
       }
 
-      this.scopedSync().write(normalize(fileName), content);
+      this.scopedSync().write(normalize(fileName), content as ArrayBufferLike);
     });
   }
 
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
@@ -87,7 +87,7 @@
     "ng-packagr": "0.0.0-NG-PACKAGR-PEER-DEP",
     "protractor": "^7.0.0",
     "tailwindcss": "^2.0.0 || ^3.0.0 || ^4.0.0",
-    "typescript": ">=5.8 <5.9"
+    "typescript": ">=5.8 <6.0"
   },
   "peerDependenciesMeta": {
     "@angular/core": {
diff --git a/packages/angular_devkit/core/src/virtual-fs/host/buffer.ts b/packages/angular_devkit/core/src/virtual-fs/host/buffer.ts
@@ -10,7 +10,7 @@ import { TextDecoder, TextEncoder } from 'node:util';
 import { FileBuffer } from './interface';
 
 export function stringToFileBuffer(str: string): FileBuffer {
-  return new TextEncoder().encode(str).buffer;
+  return new TextEncoder().encode(str).buffer as FileBuffer;
 }
 
 export function fileBufferToString(fileBuffer: FileBuffer): string {
diff --git a/packages/angular_devkit/schematics/src/sink/dryrun.ts b/packages/angular_devkit/schematics/src/sink/dryrun.ts
@@ -23,12 +23,12 @@ export interface DryRunDeleteEvent {
 export interface DryRunCreateEvent {
   kind: 'create';
   path: string;
-  content: Buffer;
+  content: ArrayBufferLike;
 }
 export interface DryRunUpdateEvent {
   kind: 'update';
   path: string;
-  content: Buffer;
+  content: ArrayBufferLike;
 }
 export interface DryRunRenameEvent {
   kind: 'rename';
diff --git a/packages/angular_devkit/schematics/src/sink/host.ts b/packages/angular_devkit/schematics/src/sink/host.ts
@@ -22,8 +22,8 @@ import { SimpleSinkBase } from './sink';
 export class HostSink extends SimpleSinkBase {
   protected _filesToDelete: Set<Path> = new Set();
   protected _filesToRename: Set<[Path, Path]> = new Set();
-  protected _filesToCreate: Map<Path, Buffer<ArrayBufferLike>> = new Map();
-  protected _filesToUpdate: Map<Path, Buffer<ArrayBufferLike>> = new Map();
+  protected _filesToCreate: Map<Path, ArrayBufferLike> = new Map();
+  protected _filesToUpdate: Map<Path, ArrayBufferLike> = new Map();
 
   constructor(
     protected _host: virtualFs.Host,
@@ -58,13 +58,15 @@ export class HostSink extends SimpleSinkBase {
   }
 
   protected _overwriteFile(path: Path, content: Buffer): Observable<void> {
-    this._filesToUpdate.set(path, content);
+    // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+    this._filesToUpdate.set(path, content as unknown as ArrayBufferLike);
 
     return EMPTY;
   }
 
   protected _createFile(path: Path, content: Buffer): Observable<void> {
-    this._filesToCreate.set(path, content);
+    // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+    this._filesToCreate.set(path, content as unknown as ArrayBufferLike);
 
     return EMPTY;
   }
diff --git a/packages/angular_devkit/schematics_cli/bin/schematics.ts b/packages/angular_devkit/schematics_cli/bin/schematics.ts
@@ -305,10 +305,16 @@ export async function main({
         );
         break;
       case 'update':
-        loggingQueue.push(`${colors.cyan('UPDATE')} ${eventPath} (${event.content.length} bytes)`);
+        loggingQueue.push(
+          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+          `${colors.cyan('UPDATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+        );
         break;
       case 'create':
-        loggingQueue.push(`${colors.green('CREATE')} ${eventPath} (${event.content.length} bytes)`);
+        loggingQueue.push(
+          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
+          `${colors.green('CREATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+        );
         break;
       case 'delete':
         loggingQueue.push(`${colors.yellow('DELETE')} ${eventPath}`);
diff --git a/packages/ngtools/webpack/package.json b/packages/ngtools/webpack/package.json
@@ -22,7 +22,7 @@
   "homepage": "https://github.com/angular/angular-cli/tree/main/packages/ngtools/webpack",
   "peerDependencies": {
     "@angular/compiler-cli": "0.0.0-ANGULAR-FW-PEER-DEP",
-    "typescript": ">=5.8 <5.9",
+    "typescript": ">=5.8 <6.0",
     "webpack": "^5.54.0"
   },
   "devDependencies": {
diff --git a/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/BUILD.bazel b/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/BUILD.bazel
@@ -1,11 +1,10 @@
 load("//tools:defaults.bzl", "ts_project")
 
-# files fetched on 2025-03-03 from
-# https://github.com/microsoft/TypeScript/releases/tag/v5.8.2
+# files fetched on 2025-07-18
 
-# Commands to download:
-# curl https://raw.githubusercontent.com/microsoft/TypeScript/v5.8.2/lib/typescript.d.ts -o packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts
-# curl https://raw.githubusercontent.com/microsoft/TypeScript/v5.8.2/lib/typescript.js -o packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js
+# Commands to update from node_modules:
+# cp node_modules/typescript/lib/typescript.d.ts packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts
+# cp node_modules/typescript/lib/typescript.js packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js
 
 licenses(["notice"])  # Apache 2.0
 
diff --git a/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts b/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts
diff --git a/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js b/packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml

Original file line number	Diff line number	Diff line change
`@@ -125,7 +125,7 @@ export class JavaScriptTransformer {`
`125`	`125`	`{`
`126`	`126`	`// The below is disable as with Yarn PNP this causes build failures with the below message`
`127`	`127`	// `Unable to deserialize cloned data`.
`128`		`- transferList: process.versions.pnp ? undefined : [data.buffer],`
	`128`	`+ transferList: process.versions.pnp ? undefined : [data.buffer as ArrayBuffer],`
`129`	`129`	`},`
`130`	`130`	`)) as Uint8Array;`
`131`	`131`
Original file line number	Diff line number	Diff line change
`@@ -122,7 +122,7 @@ export class TestProjectHost extends NodeJsSyncHost {`
`122`	`122`	`content = content.buffer.slice(content.byteOffset, content.byteOffset + content.byteLength);`
`123`	`123`	`}`
`124`	`124`
`125`		`- this.scopedSync().write(normalize(fileName), content);`
	`125`	`+ this.scopedSync().write(normalize(fileName), content as ArrayBufferLike);`
`126`	`126`	`});`
`127`	`127`	`}`
`128`	`128`
Original file line number	Diff line number	Diff line change
`@@ -10,7 +10,7 @@ import { TextDecoder, TextEncoder } from 'node:util';`
`10`	`10`	`import { FileBuffer } from './interface';`
`11`	`11`
`12`	`12`	`export function stringToFileBuffer(str: string): FileBuffer {`
`13`		`- return new TextEncoder().encode(str).buffer;`
	`13`	`+ return new TextEncoder().encode(str).buffer as FileBuffer;`
`14`	`14`	`}`
`15`	`15`
`16`	`16`	`export function fileBufferToString(fileBuffer: FileBuffer): string {`