diff --git a/packages/vue-component-meta/src/index.ts b/packages/vue-component-meta/src/index.ts
index c123391d7..413ee82c4 100644
--- a/packages/vue-component-meta/src/index.ts
+++ b/packages/vue-component-meta/src/index.ts
@@ -19,13 +19,15 @@ export * from './types';
 
 export type ComponentMetaChecker = ReturnType<typeof baseCreate>;
 
+const windowsPathReg = /\\/g;
+
 export function createComponentMetaCheckerByJsonConfig(
 	root: string,
 	json: any,
 	checkerOptions: MetaCheckerOptions = {},
 	ts: typeof import('typescript/lib/tsserverlibrary') = require('typescript'),
 ) {
-	const rootPath = (root as path.OsPath).replace(/\\/g, '/') as path.PosixPath;
+	const rootPath = (root as path.OsPath).replace(windowsPathReg, '/') as path.PosixPath;
 	return createComponentMetaCheckerWorker(
 		() => vue.createParsedCommandLineByJson(ts, ts.sys, root, json),
 		checkerOptions,
@@ -40,7 +42,7 @@ export function createComponentMetaChecker(
 	checkerOptions: MetaCheckerOptions = {},
 	ts: typeof import('typescript/lib/tsserverlibrary') = require('typescript'),
 ) {
-	const tsconfig = (tsconfigPath as path.OsPath).replace(/\\/g, '/') as path.PosixPath;
+	const tsconfig = (tsconfigPath as path.OsPath).replace(windowsPathReg, '/') as path.PosixPath;
 	return createComponentMetaCheckerWorker(
 		() => vue.createParsedCommandLine(ts, ts.sys, tsconfigPath),
 		checkerOptions,
@@ -63,7 +65,7 @@ function createComponentMetaCheckerWorker(
 	 */
 
 	let parsedCommandLine = loadParsedCommandLine();
-	let fileNames = (parsedCommandLine.fileNames as path.OsPath[]).map<path.PosixPath>(path => path.replace(/\\/g, '/') as path.PosixPath);
+	let fileNames = (parsedCommandLine.fileNames as path.OsPath[]).map<path.PosixPath>(path => path.replace(windowsPathReg, '/') as path.PosixPath);
 	let projectVersion = 0;
 
 	const scriptSnapshots = new Map<string, ts.IScriptSnapshot>();
@@ -87,18 +89,18 @@ function createComponentMetaCheckerWorker(
 	return {
 		...baseCreate(_host, vue.resolveVueCompilerOptions(parsedCommandLine.vueOptions), checkerOptions, globalComponentName, ts),
 		updateFile(fileName: string, text: string) {
-			fileName = (fileName as path.OsPath).replace(/\\/g, '/') as path.PosixPath;
+			fileName = (fileName as path.OsPath).replace(windowsPathReg, '/') as path.PosixPath;
 			scriptSnapshots.set(fileName, ts.ScriptSnapshot.fromString(text));
 			projectVersion++;
 		},
 		deleteFile(fileName: string) {
-			fileName = (fileName as path.OsPath).replace(/\\/g, '/') as path.PosixPath;
+			fileName = (fileName as path.OsPath).replace(windowsPathReg, '/') as path.PosixPath;
 			fileNames = fileNames.filter(f => f !== fileName);
 			projectVersion++;
 		},
 		reload() {
 			parsedCommandLine = loadParsedCommandLine();
-			fileNames = (parsedCommandLine.fileNames as path.OsPath[]).map<path.PosixPath>(path => path.replace(/\\/g, '/') as path.PosixPath);
+			fileNames = (parsedCommandLine.fileNames as path.OsPath[]).map<path.PosixPath>(path => path.replace(windowsPathReg, '/') as path.PosixPath);
 			this.clearCache();
 		},
 		clearCache() {
diff --git a/packages/vue-language-core/src/generators/template.ts b/packages/vue-language-core/src/generators/template.ts
index 8c99c5c84..99b2ac620 100644
--- a/packages/vue-language-core/src/generators/template.ts
+++ b/packages/vue-language-core/src/generators/template.ts
@@ -42,7 +42,8 @@ const formatBrackets = {
 	curly: ['0 +', '+ 0;'] as [string, string],
 	event: ['() => ', ';'] as [string, string],
 };
-const validTsVar = /^[a-zA-Z_$][0-9a-zA-Z_$]*$/;
+const validTsVarReg = /^[a-zA-Z_$][0-9a-zA-Z_$]*$/;
+const colonReg = /:/g;
 // @ts-ignore
 const transformContext: CompilerDOM.TransformContext = {
 	onError: () => { },
@@ -177,7 +178,7 @@ export function generate(
 	}
 
 	function toCanonicalComponentName(tagText: string) {
-		return validTsVar.test(tagText) ? tagText : capitalize(camelize(tagText.replace(/:/g, '-')));
+		return validTsVarReg.test(tagText) ? tagText : capitalize(camelize(tagText.replace(colonReg, '-')));
 	}
 
 	function getPossibleOriginalComponentName(tagText: string) {
@@ -676,7 +677,7 @@ export function generate(
 		else {
 			codes.push(`let ${var_originalComponent}!: `);
 			for (const componentName of getPossibleOriginalComponentName(tag)) {
-				codes.push(`'${componentName}' extends keyof typeof __VLS_ctx ? typeof __VLS_ctx${validTsVar.test(componentName) ? `.${componentName}` : `['${componentName}']`} : `);
+				codes.push(`'${componentName}' extends keyof typeof __VLS_ctx ? typeof __VLS_ctx${validTsVarReg.test(componentName) ? `.${componentName}` : `['${componentName}']`} : `);
 			}
 			codes.push(`typeof __VLS_resolvedLocalAndGlobalComponents['${toCanonicalComponentName(tag)}'];\n`);
 		}
@@ -1776,7 +1777,7 @@ export function generate(
 
 	function createObjectPropertyCode(a: Code, astHolder?: any): Code[] {
 		const aStr = typeof a === 'string' ? a : a[0];
-		if (validTsVar.test(aStr)) {
+		if (validTsVarReg.test(aStr)) {
 			return [a];
 		}
 		else if (aStr.startsWith('[') && aStr.endsWith(']') && astHolder) {
@@ -1861,7 +1862,7 @@ export function generate(
 
 	function createPropertyAccessCode(a: Code, astHolder?: any): Code[] {
 		const aStr = typeof a === 'string' ? a : a[0];
-		if (!compilerOptions.noPropertyAccessFromIndexSignature && validTsVar.test(aStr)) {
+		if (!compilerOptions.noPropertyAccessFromIndexSignature && validTsVarReg.test(aStr)) {
 			return ['.', a];
 		}
 		else if (aStr.startsWith('[') && aStr.endsWith(']')) {
diff --git a/packages/vue-language-core/src/plugins/file-html.ts b/packages/vue-language-core/src/plugins/file-html.ts
index e86b8a49b..9688672d3 100644
--- a/packages/vue-language-core/src/plugins/file-html.ts
+++ b/packages/vue-language-core/src/plugins/file-html.ts
@@ -1,6 +1,9 @@
 import type { SFCParseResult } from '@vue/compiler-sfc';
 import { VueLanguagePlugin } from '../types';
 
+const sfcBlockReg = /\<(script|style)\b([\s\S]*?)\>([\s\S]*?)\<\/\1\>/g;
+const langReg = /\blang\s*=\s*(['\"]?)(\S*)\b\1/;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -29,9 +32,6 @@ const plugin: VueLanguagePlugin = () => {
 
 				let templateContent = content;
 
-				const sfcBlockReg = /\<(script|style)\b([\s\S]*?)\>([\s\S]*?)\<\/\1\>/g;
-				const langReg = /\blang\s*=\s*(['\"]?)(\S*)\b\1/;
-
 				for (const match of content.matchAll(sfcBlockReg)) {
 
 					const matchText = match[0];
diff --git a/packages/vue-language-core/src/plugins/file-md.ts b/packages/vue-language-core/src/plugins/file-md.ts
index e8ec93045..d43cfb4e1 100644
--- a/packages/vue-language-core/src/plugins/file-md.ts
+++ b/packages/vue-language-core/src/plugins/file-md.ts
@@ -3,6 +3,13 @@ import type { SFCBlock } from '@vue/compiler-sfc';
 import { VueLanguagePlugin } from '../types';
 import { parse } from '../utils/parseSfc';
 
+const codeblockReg = /```[\s\S]+?```/g;
+const inlineCodeblockReg = /`[^\n`]+?`/g;
+const scriptSetupReg = /\\\<[\s\S]+?\>\n?/g;
+const sfcBlockReg = /\<(script|style)\b[\s\S]*?\>([\s\S]*?)\<\/\1\>/g;
+const angleBracketReg = /\<\S*\:\S*\>/g;
+const linkReg = /\[[\s\S]*?\]\([\s\S]*?\)/g;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -15,13 +22,12 @@ const plugin: VueLanguagePlugin = () => {
 
 				content = content
 					// code block
-					.replace(/```[\s\S]+?```/g, match => '```' + ' '.repeat(match.length - 6) + '```')
+					.replace(codeblockReg, match => '```' + ' '.repeat(match.length - 6) + '```')
 					// inline code block
-					.replace(/`[^\n`]+?`/g, match => `\`${' '.repeat(match.length - 2)}\``)
+					.replace(inlineCodeblockReg, match => `\`${' '.repeat(match.length - 2)}\``)
 					// # \<script setup>
-					.replace(/\\\<[\s\S]+?\>\n?/g, match => ' '.repeat(match.length));
+					.replace(scriptSetupReg, match => ' '.repeat(match.length));
 
-				const sfcBlockReg = /\<(script|style)\b[\s\S]*?\>([\s\S]*?)\<\/\1\>/g;
 				const codes: Segment[] = [];
 
 				for (const match of content.matchAll(sfcBlockReg)) {
@@ -35,9 +41,9 @@ const plugin: VueLanguagePlugin = () => {
 
 				content = content
 					// angle bracket: <http://foo.com>
-					.replace(/\<\S*\:\S*\>/g, match => ' '.repeat(match.length))
+					.replace(angleBracketReg, match => ' '.repeat(match.length))
 					// [foo](http://foo.com)
-					.replace(/\[[\s\S]*?\]\([\s\S]*?\)/g, match => ' '.repeat(match.length));
+					.replace(linkReg, match => ' '.repeat(match.length));
 
 				codes.push('<template>\n');
 				codes.push([content, undefined, 0]);
diff --git a/packages/vue-language-core/src/plugins/vue-sfc-customblocks.ts b/packages/vue-language-core/src/plugins/vue-sfc-customblocks.ts
index 5432dd4d2..6b24b5969 100644
--- a/packages/vue-language-core/src/plugins/vue-sfc-customblocks.ts
+++ b/packages/vue-language-core/src/plugins/vue-sfc-customblocks.ts
@@ -1,6 +1,8 @@
 import { FileCapabilities, FileRangeCapabilities } from '@volar/language-core';
 import { VueLanguagePlugin } from '../types';
 
+const customBlockReg = /^(.*)\.customBlock_([^_]+)_(\d+)\.([^.]+)$/;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -17,7 +19,7 @@ const plugin: VueLanguagePlugin = () => {
 		},
 
 		resolveEmbeddedFile(_fileName, sfc, embeddedFile) {
-			const match = embeddedFile.fileName.match(/^(.*)\.customBlock_([^_]+)_(\d+)\.([^.]+)$/);
+			const match = embeddedFile.fileName.match(customBlockReg);
 			if (match) {
 				const index = parseInt(match[3]);
 				const customBlock = sfc.customBlocks[index];
diff --git a/packages/vue-language-core/src/plugins/vue-sfc-scripts.ts b/packages/vue-language-core/src/plugins/vue-sfc-scripts.ts
index 18e2a5b75..0739ddfaa 100644
--- a/packages/vue-language-core/src/plugins/vue-sfc-scripts.ts
+++ b/packages/vue-language-core/src/plugins/vue-sfc-scripts.ts
@@ -1,6 +1,9 @@
 import { FileCapabilities, FileKind } from '@volar/language-core';
 import { VueLanguagePlugin } from '../types';
 
+const scriptFormatReg = /^(.*)\.script_format\.([^.]+)$/;
+const scriptSetupFormatReg = /^(.*)\.scriptSetup_format\.([^.]+)$/;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -19,8 +22,8 @@ const plugin: VueLanguagePlugin = () => {
 		},
 
 		resolveEmbeddedFile(_fileName, sfc, embeddedFile) {
-			const scriptMatch = embeddedFile.fileName.match(/^(.*)\.script_format\.([^.]+)$/);
-			const scriptSetupMatch = embeddedFile.fileName.match(/^(.*)\.scriptSetup_format\.([^.]+)$/);
+			const scriptMatch = embeddedFile.fileName.match(scriptFormatReg);
+			const scriptSetupMatch = embeddedFile.fileName.match(scriptSetupFormatReg);
 			const script = scriptMatch ? sfc.script : scriptSetupMatch ? sfc.scriptSetup : undefined;
 			if (script) {
 				embeddedFile.kind = FileKind.TextFile;
diff --git a/packages/vue-language-core/src/plugins/vue-sfc-styles.ts b/packages/vue-language-core/src/plugins/vue-sfc-styles.ts
index 02c4956de..b4b3d7f78 100644
--- a/packages/vue-language-core/src/plugins/vue-sfc-styles.ts
+++ b/packages/vue-language-core/src/plugins/vue-sfc-styles.ts
@@ -1,6 +1,8 @@
 import { FileCapabilities, FileRangeCapabilities } from '@volar/language-core';
 import { VueLanguagePlugin } from '../types';
 
+const styleReg = /^(.*)\.style_(\d+)\.([^.]+)$/;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -17,7 +19,7 @@ const plugin: VueLanguagePlugin = () => {
 		},
 
 		resolveEmbeddedFile(_fileName, sfc, embeddedFile) {
-			const match = embeddedFile.fileName.match(/^(.*)\.style_(\d+)\.([^.]+)$/);
+			const match = embeddedFile.fileName.match(styleReg);
 			if (match) {
 				const index = parseInt(match[2]);
 				const style = sfc.styles[index];
diff --git a/packages/vue-language-core/src/plugins/vue-sfc-template.ts b/packages/vue-language-core/src/plugins/vue-sfc-template.ts
index b5f2d73b3..34fc29c93 100644
--- a/packages/vue-language-core/src/plugins/vue-sfc-template.ts
+++ b/packages/vue-language-core/src/plugins/vue-sfc-template.ts
@@ -1,6 +1,8 @@
 import { FileCapabilities, FileRangeCapabilities } from '@volar/language-core';
 import { VueLanguagePlugin } from '../types';
 
+const templateReg = /^(.*)\.template\.([^.]+)$/;
+
 const plugin: VueLanguagePlugin = () => {
 
 	return {
@@ -15,7 +17,7 @@ const plugin: VueLanguagePlugin = () => {
 		},
 
 		resolveEmbeddedFile(_fileName, sfc, embeddedFile) {
-			const match = embeddedFile.fileName.match(/^(.*)\.template\.([^.]+)$/);
+			const match = embeddedFile.fileName.match(templateReg);
 			if (match && sfc.template) {
 				embeddedFile.capabilities = FileCapabilities.full;
 				embeddedFile.content.push([
diff --git a/packages/vue-language-core/src/plugins/vue-tsx.ts b/packages/vue-language-core/src/plugins/vue-tsx.ts
index fd640452d..6c8ca0603 100644
--- a/packages/vue-language-core/src/plugins/vue-tsx.ts
+++ b/packages/vue-language-core/src/plugins/vue-tsx.ts
@@ -7,6 +7,9 @@ import { Sfc, VueLanguagePlugin } from '../types';
 import { FileCapabilities, FileKind } from '@volar/language-core';
 import * as muggle from 'muggle-string';
 
+const templateFormatReg = /^\.template_format\.ts$/;
+const templateStyleCssReg = /^\.template_style\.css$/;
+
 const plugin: VueLanguagePlugin = ({ modules, vueCompilerOptions, compilerOptions, codegenStack }) => {
 
 	const ts = modules.typescript;
@@ -54,7 +57,7 @@ const plugin: VueLanguagePlugin = ({ modules, vueCompilerOptions, compilerOption
 					embeddedFile.mirrorBehaviorMappings = [...tsx.mirrorBehaviorMappings];
 				}
 			}
-			else if (suffix.match(/^\.template_format\.ts$/)) {
+			else if (suffix.match(templateFormatReg)) {
 
 				embeddedFile.parentFileName = fileName + '.template.' + sfc.template?.lang;
 				embeddedFile.kind = FileKind.TextFile;
@@ -86,7 +89,7 @@ const plugin: VueLanguagePlugin = ({ modules, vueCompilerOptions, compilerOption
 					}
 				}
 			}
-			else if (suffix.match(/^\.template_style\.css$/)) {
+			else if (suffix.match(templateStyleCssReg)) {
 
 				embeddedFile.parentFileName = fileName + '.template.' + sfc.template?.lang;
 
diff --git a/packages/vue-language-core/src/sourceFile.ts b/packages/vue-language-core/src/sourceFile.ts
index 3ed1ca2e6..b2dc427db 100644
--- a/packages/vue-language-core/src/sourceFile.ts
+++ b/packages/vue-language-core/src/sourceFile.ts
@@ -10,6 +10,8 @@ import { parseCssVars } from './utils/parseCssVars';
 import { parseCssClassNames } from './utils/parseCssClassNames';
 import { VueCompilerOptions } from './types';
 
+const jsxReg = /^\.(js|ts)x?$/;
+
 export class VueEmbeddedFile {
 
 	public parentFileName?: string;
@@ -52,7 +54,7 @@ export class VueFile implements VirtualFile {
 	}
 
 	get mainScriptName() {
-		return this._allEmbeddedFiles.value.find(e => e.file.fileName.replace(this.fileName, '').match(/^\.(js|ts)x?$/))?.file.fileName ?? '';
+		return this._allEmbeddedFiles.value.find(e => e.file.fileName.replace(this.fileName, '').match(jsxReg))?.file.fileName ?? '';
 	}
 
 	get embeddedFiles() {
diff --git a/packages/vue-language-core/src/utils/parseCssClassNames.ts b/packages/vue-language-core/src/utils/parseCssClassNames.ts
index 1f5532d51..2a9fd25a7 100644
--- a/packages/vue-language-core/src/utils/parseCssClassNames.ts
+++ b/packages/vue-language-core/src/utils/parseCssClassNames.ts
@@ -1,9 +1,10 @@
 import { clearComments } from './parseCssVars';
 
+const cssClassNameReg = /(?=([\.]{1}[a-zA-Z_]+[\w\_\-]*)[\s\.\+\{\>#\:]{1})/g;
+
 export function* parseCssClassNames(styleContent: string) {
 	styleContent = clearComments(styleContent);
-	const cssClassNameRegex = /(?=([\.]{1}[a-zA-Z_]+[\w\_\-]*)[\s\.\+\{\>#\:]{1})/g;
-	const matchs = styleContent.matchAll(cssClassNameRegex);
+	const matchs = styleContent.matchAll(cssClassNameReg);
 	for (const match of matchs) {
 		if (match.index !== undefined) {
 			const matchText = match[1];
diff --git a/packages/vue-language-core/src/utils/parseCssVars.ts b/packages/vue-language-core/src/utils/parseCssVars.ts
index ffc6e67e2..305a02eae 100644
--- a/packages/vue-language-core/src/utils/parseCssVars.ts
+++ b/packages/vue-language-core/src/utils/parseCssVars.ts
@@ -1,8 +1,12 @@
 // https://github.com/vuejs/core/blob/main/packages/compiler-sfc/src/cssVars.ts#L47-L61
+
+const vBindCssVarReg = /\bv-bind\(\s*(?:'([^']+)'|"([^"]+)"|([^'"][^)]*))\s*\)/g;
+const commentReg1 = /\/\*([\s\S]*?)\*\//g;
+const commentReg2 = /\/\/([\s\S]*?)\n/g;
+
 export function* parseCssVars(styleContent: string) {
 	styleContent = clearComments(styleContent);
-	const reg = /\bv-bind\(\s*(?:'([^']+)'|"([^"]+)"|([^'"][^)]*))\s*\)/g;
-	const matchs = styleContent.matchAll(reg);
+	const matchs = styleContent.matchAll(vBindCssVarReg);
 	for (const match of matchs) {
 		if (match.index !== undefined) {
 			const matchText = match[1] ?? match[2] ?? match[3];
@@ -16,6 +20,6 @@ export function* parseCssVars(styleContent: string) {
 
 export function clearComments(css: string) {
 	return css
-		.replace(/\/\*([\s\S]*?)\*\//g, match => `/*${' '.repeat(match.length - 4)}*/`)
-		.replace(/\/\/([\s\S]*?)\n/g, match => `//${' '.repeat(match.length - 3)}\n`);
+		.replace(commentReg1, match => `/*${' '.repeat(match.length - 4)}*/`)
+		.replace(commentReg2, match => `//${' '.repeat(match.length - 3)}\n`);
 }
diff --git a/packages/vue-language-service/src/languageService.ts b/packages/vue-language-service/src/languageService.ts
index 93828fbf5..0016bf9eb 100644
--- a/packages/vue-language-service/src/languageService.ts
+++ b/packages/vue-language-service/src/languageService.ts
@@ -47,6 +47,8 @@ export function resolveConfig(
 	return config;
 }
 
+const unicodeReg = /\\u/g;
+
 function resolvePlugins(
 	services: Config['services'],
 	vueCompilerOptions: VueCompilerOptions,
@@ -193,7 +195,7 @@ function resolvePlugins(
 										transformed = true;
 										item.additionalTextEdits.push({
 											range: editRange,
-											newText: unescape(printText.replace(/\\u/g, '%u')),
+											newText: unescape(printText.replace(unicodeReg, '%u')),
 										});
 									}
 									else if (exportDefault.args && exportDefault.argsNode) {
@@ -212,7 +214,7 @@ function resolvePlugins(
 										transformed = true;
 										item.additionalTextEdits.push({
 											range: editRange,
-											newText: unescape(printText.replace(/\\u/g, '%u')),
+											newText: unescape(printText.replace(unicodeReg, '%u')),
 										});
 									}
 								}
diff --git a/packages/vue-language-service/src/plugins/vue-autoinsert-dotvalue.ts b/packages/vue-language-service/src/plugins/vue-autoinsert-dotvalue.ts
index b088dd0d3..9e13d4b03 100644
--- a/packages/vue-language-service/src/plugins/vue-autoinsert-dotvalue.ts
+++ b/packages/vue-language-service/src/plugins/vue-autoinsert-dotvalue.ts
@@ -86,6 +86,8 @@ function isTsDocument(document: TextDocument) {
 		document.languageId === 'typescriptreact';
 }
 
+const charReg = /\w/;
+
 export function isCharacterTyping(document: TextDocument, options: AutoInsertionContext) {
 
 	const lastCharacter = options.lastChange.text[options.lastChange.text.length - 1];
@@ -106,7 +108,7 @@ export function isCharacterTyping(document: TextDocument, options: AutoInsertion
 		return false;
 	}
 
-	return /\w/.test(lastCharacter) && !/\w/.test(nextCharacter);
+	return charReg.test(lastCharacter) && !charReg.test(nextCharacter);
 }
 
 export function isBlacklistNode(ts: typeof import('typescript/lib/tsserverlibrary'), node: ts.Node, pos: number, allowAccessDotValue: boolean) {
diff --git a/packages/vue-language-service/src/plugins/vue-directive-comments.ts b/packages/vue-language-service/src/plugins/vue-directive-comments.ts
index 2c4b39794..472fc445d 100644
--- a/packages/vue-language-service/src/plugins/vue-directive-comments.ts
+++ b/packages/vue-language-service/src/plugins/vue-directive-comments.ts
@@ -6,6 +6,8 @@ const cmds = [
 	'vue-expect-error',
 ];
 
+const directiveCommentReg = /<!--\s+@/;
+
 const plugin: Service = (): ReturnType<Service> => {
 
 	return {
@@ -18,7 +20,7 @@ const plugin: Service = (): ReturnType<Service> => {
 				return;
 
 			const line = document.getText({ start: { line: position.line, character: 0 }, end: position });
-			const cmdStart = line.match(/<!--\s+@/);
+			const cmdStart = line.match(directiveCommentReg);
 			if (!cmdStart)
 				return;
 
diff --git a/packages/vue-language-service/src/plugins/vue-twoslash-queries.ts b/packages/vue-language-service/src/plugins/vue-twoslash-queries.ts
index ff6973889..7e51f112d 100644
--- a/packages/vue-language-service/src/plugins/vue-twoslash-queries.ts
+++ b/packages/vue-language-service/src/plugins/vue-twoslash-queries.ts
@@ -2,6 +2,8 @@ import { FileKind, forEachEmbeddedFile, Service, ServiceContext } from '@volar/l
 import * as vue from '@vue/language-core';
 import type * as vscode from 'vscode-languageserver-protocol';
 
+const twoslashReg = /<!--\s*\^\?\s*-->/g;
+
 const plugin: Service = (context: ServiceContext<import('volar-service-typescript').Provide> | undefined, modules) => {
 
 	if (!context || !modules?.typescript)
@@ -18,7 +20,7 @@ const plugin: Service = (context: ServiceContext<import('volar-service-typescrip
 				const inlayHints: vscode.InlayHint[] = [];
 				const languageService = context.inject('typescript/languageService');
 
-				for (const pointer of document.getText(range).matchAll(/<!--\s*\^\?\s*-->/g)) {
+				for (const pointer of document.getText(range).matchAll(twoslashReg)) {
 					const offset = pointer.index! + pointer[0].indexOf('^?') + document.offsetAt(range.start);
 					const position = document.positionAt(offset);
 					hoverOffsets.push([position, document.offsetAt({
diff --git a/packages/vue-language-service/tests/findDefinition.ts b/packages/vue-language-service/tests/findDefinition.ts
index 77b36374c..ad93996f4 100644
--- a/packages/vue-language-service/tests/findDefinition.ts
+++ b/packages/vue-language-service/tests/findDefinition.ts
@@ -71,9 +71,11 @@ function readFiles(dir: string) {
 	return filesText;
 }
 
+const definitionReg = /(\^*)definition:\s*([\S]*),\s*([\S]*),\s*([\S]*)/g;
+
 function findActions(text: string) {
 
-	return [...text.matchAll(/(\^*)definition:\s*([\S]*),\s*([\S]*),\s*([\S]*)/g)].map(flag => {
+	return [...text.matchAll(definitionReg)].map(flag => {
 
 		const offset = flag.index!;
 		const targetFile = flag[2];
diff --git a/packages/vue-language-service/tests/rename.ts b/packages/vue-language-service/tests/rename.ts
index 5228e3bf2..6912f7624 100644
--- a/packages/vue-language-service/tests/rename.ts
+++ b/packages/vue-language-service/tests/rename.ts
@@ -79,9 +79,11 @@ function readFiles(dir: string) {
 	return filesText;
 }
 
+const renameReg = /(\^*)rename:\s*([\S]*)/g;
+
 function findRenameActions(text: string) {
 
-	return [...text.matchAll(/(\^*)rename:\s*([\S]*)/g)].map(flag => {
+	return [...text.matchAll(renameReg)].map(flag => {
 
 		const start = flag.index!;
 		const end = start + flag[1].length;
diff --git a/packages/vue-tsc/src/index.ts b/packages/vue-tsc/src/index.ts
index d8a5c4cab..f1f25cdf9 100644
--- a/packages/vue-tsc/src/index.ts
+++ b/packages/vue-tsc/src/index.ts
@@ -15,6 +15,8 @@ interface ProgramContext {
 	languageService: ReturnType<typeof vueTs.createLanguageService>,
 }
 
+const windowsPathReg = /\\/g;
+
 export function createProgram(options: ts.CreateProgramOptions) {
 
 	if (!options.options.noEmit && !options.options.emitDeclarationOnly)
@@ -66,7 +68,7 @@ export function createProgram(options: ts.CreateProgramOptions) {
 				return ctx.projectVersion.toString();
 			},
 			getProjectReferences: () => ctx.options.projectReferences,
-			getCurrentDirectory: () => ctx.options.host!.getCurrentDirectory().replace(/\\/g, '/'),
+			getCurrentDirectory: () => ctx.options.host!.getCurrentDirectory().replace(windowsPathReg, '/'),
 			getCancellationToken: ctx.options.host!.getCancellationToken ? () => ctx.options.host!.getCancellationToken!() : undefined,
 		};
 		const vueTsLs = vueTs.createLanguageService(languageHost, vueCompilerOptions, ts as any, ts.sys);