chore: update typescript to v6

.changeset/typescript-v6.md

@@ -0,0 +1,10 @@
+---
+'@astrojs/language-server': patch
+'@astrojs/ts-plugin': patch
+'@astrojs/yaml2ts': patch
+'@astrojs/netlify': patch
+'@astrojs/db': patch
+'astro': patch
+---
+
+Updates `typescript` to v6. No changes are needed from users.

configs/tsconfig.language-tools.json

@@ -5,8 +5,7 @@
     "target": "ES2021",
     "lib": ["WebWorker", "ES2021"],
     "module": "commonjs",
-    // TODO: when upgrading to TS 6, will need to be set to "bundler"
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "verbatimModuleSyntax": false,
     "erasableSyntaxOnly": false
   }

package.json

@@ -83,7 +83,7 @@
     "publint": "^0.3.17",
     "tinyglobby": "^0.2.16",
     "turbo": "^2.8.15",
-    "typescript": "~5.9.3",
+    "typescript": "~6.0.3",
     "typescript-eslint": "^8.59.1",
     "valibot": "^1.2.0"
   }

packages/astro/e2e/fixtures/actions-blog/package.json

@@ -19,6 +19,6 @@
 		"astro": "workspace:*",
 		"react": "^18.3.1",
 		"react-dom": "^18.3.1",
-		"typescript": "^5.9.3"
+		"typescript": "^6.0.3"
 	}
 }

packages/astro/e2e/fixtures/actions-react-19/package.json

@@ -19,7 +19,7 @@
 		"astro": "workspace:*",
 		"react": "19.2.4",
 		"react-dom": "19.2.4",
-		"typescript": "^5.9.3"
+		"typescript": "^6.0.3"
 	},
   "overrides": {
     "@types/react": "npm:types-react",

packages/astro/package.json

@@ -221,7 +221,7 @@
     "remark-code-titles": "^0.1.2",
     "rollup": "^4.58.0",
     "sass": "^1.98.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "undici": "^7.22.0",
     "unified": "^11.0.5",
     "vitest": "^4.1.0"

packages/astro/test/astro-sync.test.ts

@@ -90,8 +90,13 @@ const createFixture = () => {
 					},
 				});
 				assert.equal(
-					result.outputText,
-					'',
+					result.outputText.trim(),
+					// Since TypeScript v6.0, all code will be assumed to be in
+					// JavaScript strict mode, thus the "use strict" directive
+					// is always emitted.
+					//
+					// See https://www.typescriptlang.org/docs/handbook/release-notes/typescript-6-0.html#deprecated---alwaysstrict-false
+					'"use strict";',
 					`${path} should be valid TypeScript. Output: ${result.outputText}`,
 				);
 			} catch (error) {

packages/astro/test/fixtures/astro-check-errors/package.json

@@ -5,6 +5,6 @@
   "dependencies": {
     "astro": "workspace:*",
     "@astrojs/check": "workspace:*",
-    "typescript": "^5.9.3"
+    "typescript": "^6.0.3"
   }
 }

packages/astro/test/fixtures/astro-check-no-errors/package.json

@@ -5,6 +5,6 @@
   "dependencies": {
     "astro": "workspace:*",
     "@astrojs/check": "workspace:*",
-    "typescript": "^5.9.3"
+    "typescript": "^6.0.3"
   }
 }

packages/astro/test/types/session-data.ts

@@ -1,4 +1,4 @@
-import './session-env';
+import './session-env.d.ts';
 import { describe, it } from 'node:test';
 import { expectTypeOf } from 'expect-type';
 import { AstroSession } from '../../dist/core/session/runtime.js';

packages/db/package.json

@@ -85,7 +85,7 @@
     "astro-scripts": "workspace:*",
     "cheerio": "1.2.0",
     "expect-type": "^1.3.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vite": "^7.3.2"
   }
 }

packages/integrations/netlify/package.json

@@ -58,7 +58,7 @@
     "astro-scripts": "workspace:*",
     "cheerio": "1.2.0",
     "devalue": "^5.6.3",
-    "typescript": "^5.9.3"
+    "typescript": "^6.0.3"
   },
   "astro": {
     "external": true

packages/language-tools/language-server/package.json

@@ -51,7 +51,7 @@
     "@volar/typescript": "~2.4.28",
     "astro-scripts": "workspace:*",
     "tsx": "^4.21.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vscode-languageserver-protocol": "^3.17.5",
     "vscode-languageserver-textdocument": "^1.0.12"
   },

packages/language-tools/language-server/test/fixture/.editorconfig

@@ -1,4 +1,5 @@
 root = true
 
-[*]
+# Scoped to editorConfig.astro. Ensure other files are not affected by this configuration.
+[editorConfig.astro]
 end_of_line = crlf

packages/language-tools/language-server/test/server.ts

@@ -6,6 +6,7 @@ import { startLanguageServer } from '@volar/test-utils';
 import * as protocol from 'vscode-languageserver-protocol/node.js';
 import type { TextDocument } from 'vscode-languageserver-textdocument';
 import { URI } from 'vscode-uri';
+import { fixtureDir } from './test-utils.ts';
 
 let serverHandle: LanguageServerHandle | undefined;
 let initializeResult: protocol.InitializeResult | undefined;
@@ -66,7 +67,12 @@ export async function getLanguageServer(): Promise<LanguageServer> {
 		initializeResult: initializeResult,
 		openFakeDocument: async (content: string, languageId: string) => {
 			const hash = createHash('sha256').update(content).digest('base64url');
-			const uri = URI.file(`does-not-exists-${hash}-.astro`).toString();
+			// The path must live inside the fixture directory so that TypeScript's
+			// module resolution can walk up to `fixture/node_modules/astro/jsx-runtime.d.ts`
+			// when resolving the `@jsxImportSource astro` pragma in the generated TSX.
+			// Under TS6, an unresolvable pragma cascades into TS7026 errors on every
+			// intrinsic JSX element (`<div>`, `<script>`, ...).
+			const uri = URI.file(path.join(fixtureDir, `does-not-exists-${hash}-.astro`)).toString();
 			const textDocument = await serverHandle!.openInMemoryDocument(uri, languageId, content);
 
 			return textDocument;

packages/language-tools/ts-plugin/package.json

@@ -44,7 +44,7 @@
     "@vscode/test-electron": "^2.5.2",
     "mocha": "^11.7.5",
     "tsx": "^4.21.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vscode-uri": "^3.1.0"
   }
 }

packages/language-tools/yaml2ts/package.json

@@ -25,6 +25,6 @@
   },
   "devDependencies": {
     "@volar/language-core": "~2.4.28",
-    "typescript": "^5.9.3"
+    "typescript": "^6.0.3"
   }
 }