refactor(language-server): unused resolveLanguageServiceHost hook

packages/language-server/package.json

@@ -30,11 +30,11 @@
     "@astrojs/compiler": "^2.10.3",
     "@astrojs/yaml2ts": "^0.2.1",
     "@jridgewell/sourcemap-codec": "^1.4.15",
-    "@volar/kit": "~2.4.0",
-    "@volar/language-core": "~2.4.0",
-    "@volar/language-server": "~2.4.0",
-    "@volar/language-service": "~2.4.0",
-    "@volar/typescript": "~2.4.0",
+    "@volar/kit": "~2.4.5",
+    "@volar/language-core": "~2.4.5",
+    "@volar/language-server": "~2.4.5",
+    "@volar/language-service": "~2.4.5",
+    "@volar/typescript": "~2.4.5",
     "fast-glob": "^3.2.12",
     "muggle-string": "^0.4.1",
     "volar-service-css": "0.0.61",
@@ -53,7 +53,7 @@
     "@types/chai": "^4.3.5",
     "@types/mocha": "^10.0.1",
     "@types/node": "^18.17.8",
-    "@volar/test-utils": "~2.4.0",
+    "@volar/test-utils": "~2.4.5",
     "astro": "^4.14.0",
     "chai": "^4.3.7",
     "mocha": "^10.2.0",

packages/language-server/src/check.ts

@@ -6,7 +6,7 @@ import * as kit from '@volar/kit';
 import { Diagnostic, DiagnosticSeverity } from '@volar/language-server';
 import fg from 'fast-glob';
 import { URI } from 'vscode-uri';
-import { getAstroLanguagePlugin } from './core/index.js';
+import { addAstroTypes, getAstroLanguagePlugin } from './core/index.js';
 import { getSvelteLanguagePlugin } from './core/svelte.js';
 import { getVueLanguagePlugin } from './core/vue.js';
 import { getAstroInstall } from './utils.js';
@@ -137,9 +137,8 @@ export class AstroCheck {
 		this.ts = this.typescriptPath ? require(this.typescriptPath) : require('typescript');
 		const tsconfigPath = this.getTsconfig();
 
-		const astroInstall = getAstroInstall([this.workspacePath]);
 		const languagePlugins = [
-			getAstroLanguagePlugin(typeof astroInstall === 'string' ? undefined : astroInstall, this.ts),
+			getAstroLanguagePlugin(),
 			getSvelteLanguagePlugin(),
 			getVueLanguagePlugin(),
 		];
@@ -152,6 +151,12 @@ export class AstroCheck {
 				services,
 				tsconfigPath,
 				includeProjectReference,
+				({ project }) => {
+					const { languageServiceHost } = project.typescript!;
+					const astroInstall = getAstroInstall([this.workspacePath]);
+
+					addAstroTypes(typeof astroInstall === 'string' ? undefined : astroInstall, this.ts, languageServiceHost);
+				},
 			);
 		} else {
 			this.linter = kit.createTypeScriptInferredChecker(languagePlugins, services, () => {
@@ -160,6 +165,11 @@ export class AstroCheck {
 					ignore: ['node_modules'],
 					absolute: true,
 				});
+			}, undefined, ({ project }) => {
+				const { languageServiceHost } = project.typescript!;
+				const astroInstall = getAstroInstall([this.workspacePath]);
+
+				addAstroTypes(typeof astroInstall === 'string' ? undefined : astroInstall, this.ts, languageServiceHost);
 			});
 		}
 	}

packages/language-server/src/core/index.ts

@@ -18,10 +18,79 @@ import { extractStylesheets } from './parseCSS';
 import { parseHTML } from './parseHTML';
 import { extractScriptTags } from './parseJS.js';
 
-export function getAstroLanguagePlugin(
+const decoratedHosts = new WeakSet<ts.LanguageServiceHost>();
+
+export function addAstroTypes(
 	astroInstall: AstroInstall | undefined,
 	ts: typeof import('typescript'),
-): LanguagePlugin<URI, AstroVirtualCode> {
+	host: ts.LanguageServiceHost
+) {
+	if (decoratedHosts.has(host)) {
+		return;
+	}
+	decoratedHosts.add(host);
+
+	const getScriptFileNames = host.getScriptFileNames.bind(host);
+	const getCompilationSettings = host.getCompilationSettings.bind(host);
+
+	host.getScriptFileNames = () => {
+		const languageServerTypesDirectory = getLanguageServerTypesDir(ts);
+		const fileNames = getScriptFileNames();
+		const addedFileNames = [];
+
+		if (astroInstall) {
+			addedFileNames.push(
+				...['./env.d.ts', './astro-jsx.d.ts'].map((filePath) =>
+					ts.sys.resolvePath(path.resolve(astroInstall.path, filePath)),
+				),
+			);
+
+			// If Astro version is < 4.0.8, add jsx-runtime-augment.d.ts to the files to fake `JSX` being available from "astro/jsx-runtime".
+			// TODO: Remove this once a majority of users are on Astro 4.0.8+, erika - 2023-12-28
+			if (
+				astroInstall.version.major < 4 ||
+				(astroInstall.version.major === 4 &&
+					astroInstall.version.minor === 0 &&
+					astroInstall.version.patch < 8)
+			) {
+				addedFileNames.push(
+					...['./jsx-runtime-augment.d.ts'].map((filePath) =>
+						ts.sys.resolvePath(path.resolve(languageServerTypesDirectory, filePath)),
+					),
+				);
+			}
+		} else {
+			// If we don't have an Astro installation, add the fallback types from the language server.
+			// See the README in packages/language-server/types for more information.
+			addedFileNames.push(
+				...['./env.d.ts', './astro-jsx.d.ts', './jsx-runtime-fallback.d.ts'].map((f) =>
+					ts.sys.resolvePath(path.resolve(languageServerTypesDirectory, f)),
+				),
+			);
+		}
+
+		return [...fileNames, ...addedFileNames];
+	}
+	host.getCompilationSettings = () => {
+		const baseCompilationSettings = getCompilationSettings();
+		return {
+			...baseCompilationSettings,
+			module: ts.ModuleKind.ESNext ?? 99,
+			target: ts.ScriptTarget.ESNext ?? 99,
+			jsx: ts.JsxEmit.Preserve ?? 1,
+			resolveJsonModule: true,
+			allowJs: true, // Needed for inline scripts, which are virtual .js files
+			isolatedModules: true,
+			moduleResolution:
+				baseCompilationSettings.moduleResolution === ts.ModuleResolutionKind.Classic ||
+					!baseCompilationSettings.moduleResolution
+					? ts.ModuleResolutionKind.Node10
+					: baseCompilationSettings.moduleResolution,
+		};
+	};
+}
+
+export function getAstroLanguagePlugin(): LanguagePlugin<URI, AstroVirtualCode> {
 	return {
 		getLanguageId(uri) {
 			if (uri.path.endsWith('.astro')) {
@@ -66,66 +135,6 @@ export function getAstroLanguagePlugin(
 				}
 				return result;
 			},
-			resolveLanguageServiceHost(host) {
-				return {
-					...host,
-					getScriptFileNames() {
-						const languageServerTypesDirectory = getLanguageServerTypesDir(ts);
-						const fileNames = host.getScriptFileNames();
-						const addedFileNames = [];
-
-						if (astroInstall) {
-							addedFileNames.push(
-								...['./env.d.ts', './astro-jsx.d.ts'].map((filePath) =>
-									ts.sys.resolvePath(path.resolve(astroInstall.path, filePath)),
-								),
-							);
-
-							// If Astro version is < 4.0.8, add jsx-runtime-augment.d.ts to the files to fake `JSX` being available from "astro/jsx-runtime".
-							// TODO: Remove this once a majority of users are on Astro 4.0.8+, erika - 2023-12-28
-							if (
-								astroInstall.version.major < 4 ||
-								(astroInstall.version.major === 4 &&
-									astroInstall.version.minor === 0 &&
-									astroInstall.version.patch < 8)
-							) {
-								addedFileNames.push(
-									...['./jsx-runtime-augment.d.ts'].map((filePath) =>
-										ts.sys.resolvePath(path.resolve(languageServerTypesDirectory, filePath)),
-									),
-								);
-							}
-						} else {
-							// If we don't have an Astro installation, add the fallback types from the language server.
-							// See the README in packages/language-server/types for more information.
-							addedFileNames.push(
-								...['./env.d.ts', './astro-jsx.d.ts', './jsx-runtime-fallback.d.ts'].map((f) =>
-									ts.sys.resolvePath(path.resolve(languageServerTypesDirectory, f)),
-								),
-							);
-						}
-
-						return [...fileNames, ...addedFileNames];
-					},
-					getCompilationSettings() {
-						const baseCompilationSettings = host.getCompilationSettings();
-						return {
-							...baseCompilationSettings,
-							module: ts.ModuleKind.ESNext ?? 99,
-							target: ts.ScriptTarget.ESNext ?? 99,
-							jsx: ts.JsxEmit.Preserve ?? 1,
-							resolveJsonModule: true,
-							allowJs: true, // Needed for inline scripts, which are virtual .js files
-							isolatedModules: true,
-							moduleResolution:
-								baseCompilationSettings.moduleResolution === ts.ModuleResolutionKind.Classic ||
-								!baseCompilationSettings.moduleResolution
-									? ts.ModuleResolutionKind.Node10
-									: baseCompilationSettings.moduleResolution,
-						};
-					},
-				};
-			},
 		},
 	};
 }

packages/language-server/src/languageServerPlugin.ts

@@ -1,7 +1,6 @@
 import {
 	type Connection,
 	type LanguagePlugin,
-	type LanguageServiceEnvironment,
 	MessageType,
 	ShowMessageNotification,
 } from '@volar/language-server/node';
@@ -10,7 +9,6 @@ import { getAstroLanguagePlugin } from './core';
 import { getSvelteLanguagePlugin } from './core/svelte.js';
 import { getVueLanguagePlugin } from './core/vue.js';
 import { getPrettierPluginPath, importPrettier } from './importPackage.js';
-import { getAstroInstall } from './utils.js';
 
 // Services
 import { create as createCssService } from 'volar-service-css';
@@ -25,43 +23,17 @@ import { create as createTypescriptAddonsService } from './plugins/typescript-ad
 import { create as createTypeScriptServices } from './plugins/typescript/index.js';
 import { create as createYAMLService } from './plugins/yaml.js';
 
-export function getLanguagePlugins(
-	connection: Connection,
-	ts: typeof import('typescript'),
-	serviceEnv: LanguageServiceEnvironment,
-	tsconfig: string | undefined,
-	collectionConfigs: CollectionConfig[],
-) {
+export function getLanguagePlugins(collectionConfigs: CollectionConfig[]) {
 	const languagePlugins: LanguagePlugin<URI>[] = [
+		getAstroLanguagePlugin(),
 		getVueLanguagePlugin(),
 		getSvelteLanguagePlugin(),
 	];
 
-	const rootPath = tsconfig
-		? tsconfig.split('/').slice(0, -1).join('/')
-		: serviceEnv.workspaceFolders[0]!.fsPath;
-	const nearestPackageJson = ts.findConfigFile(rootPath, ts.sys.fileExists, 'package.json');
-
-	const astroInstall = getAstroInstall([rootPath], {
-		nearestPackageJson: nearestPackageJson,
-		readDirectory: ts.sys.readDirectory,
-	});
-
-	if (astroInstall === 'not-found') {
-		connection.sendNotification(ShowMessageNotification.type, {
-			message: `Couldn't find Astro in workspace "${rootPath}". Experience might be degraded. For the best experience, please make sure Astro is installed into your project and restart the language server.`,
-			type: MessageType.Warning,
-		});
-	}
-
 	if (collectionConfigs.length) {
 		languagePlugins.push(getFrontmatterLanguagePlugin(collectionConfigs));
 	}
 
-	languagePlugins.unshift(
-		getAstroLanguagePlugin(typeof astroInstall === 'string' ? undefined : astroInstall, ts),
-	);
-
 	return languagePlugins;
 }
 

packages/language-server/src/nodeServer.ts

@@ -3,13 +3,17 @@ import {
 	createServer,
 	createTypeScriptProject,
 	loadTsdkByPath,
+	MessageType,
+	ShowMessageNotification,
 } from '@volar/language-server/node';
 import { URI, Utils } from 'vscode-uri';
 import {
 	type CollectionConfig,
 	SUPPORTED_FRONTMATTER_EXTENSIONS_KEYS,
 } from './core/frontmatterHolders.js';
 import { getLanguagePlugins, getLanguageServicePlugins } from './languageServerPlugin.js';
+import { addAstroTypes } from './core/index.js';
+import { getAstroInstall } from './utils.js';
 
 const connection = createConnection();
 const server = createServer(connection);
@@ -63,16 +67,31 @@ connection.onInitialize((params) => {
 
 	return server.initialize(
 		params,
-		createTypeScriptProject(typescript, diagnosticMessages, ({ env, configFileName }) => {
+		createTypeScriptProject(typescript, diagnosticMessages, ({ env }) => {
 			return {
-				languagePlugins: getLanguagePlugins(
-					connection,
-					typescript,
-					env,
-					configFileName,
-					collectionConfigs,
-				),
-				setup() {},
+				languagePlugins: getLanguagePlugins(collectionConfigs),
+				setup({ project }) {
+					const { languageServiceHost, configFileName } = project.typescript!;
+
+					const rootPath = configFileName
+						? configFileName.split('/').slice(0, -1).join('/')
+						: env.workspaceFolders[0]!.fsPath;
+					const nearestPackageJson = typescript.findConfigFile(rootPath, typescript.sys.fileExists, 'package.json');
+
+					const astroInstall = getAstroInstall([rootPath], {
+						nearestPackageJson: nearestPackageJson,
+						readDirectory: typescript.sys.readDirectory,
+					});
+
+					if (astroInstall === 'not-found') {
+						connection.sendNotification(ShowMessageNotification.type, {
+							message: `Couldn't find Astro in workspace "${rootPath}". Experience might be degraded. For the best experience, please make sure Astro is installed into your project and restart the language server.`,
+							type: MessageType.Warning,
+						});
+					}
+
+					addAstroTypes(typeof astroInstall === 'string' ? undefined : astroInstall, typescript, languageServiceHost, false);
+				},
 			};
 		}),
 		getLanguageServicePlugins(connection, typescript, collectionConfigs),

packages/ts-plugin/package.json

@@ -30,8 +30,8 @@
     "@astrojs/compiler": "^2.10.3",
     "@astrojs/yaml2ts": "^0.2.1",
     "@jridgewell/sourcemap-codec": "^1.4.15",
-    "@volar/language-core": "~2.4.0",
-    "@volar/typescript": "~2.4.0",
+    "@volar/language-core": "~2.4.5",
+    "@volar/typescript": "~2.4.5",
     "semver": "^7.3.8",
     "vscode-languageserver-textdocument": "^1.0.11"
   },

packages/vscode/package.json

@@ -247,8 +247,8 @@
     "@types/mocha": "^10.0.1",
     "@types/node": "^18.17.8",
     "@types/vscode": "^1.82.0",
-    "@volar/language-server": "~2.4.0",
-    "@volar/vscode": "~2.4.0",
+    "@volar/language-server": "~2.4.5",
+    "@volar/vscode": "~2.4.5",
     "@vscode/test-electron": "^2.3.2",
     "@vscode/vsce": "2.30.0",
     "esbuild": "^0.17.19",

packages/yaml2ts/package.json

@@ -19,7 +19,7 @@
     "yaml": "^2.5.0"
   },
   "devDependencies": {
-    "@volar/language-core": "~2.4.0",
+    "@volar/language-core": "~2.4.5",
     "typescript": "^5.5.4"
   }
 }