refactor: replace startsWith with strict equality (#20603)

Author: btea

packages/vite/bin/vite.js

@@ -24,7 +24,7 @@ const profileIndex = process.argv.indexOf('--profile')
 
 if (debugIndex > 0) {
   let value = process.argv[debugIndex + 1]
-  if (!value || value.startsWith('-')) {
+  if (!value || value[0] === '-') {
     value = 'vite:*'
   } else {
     // support debugging multiple flags with comma-separated list
@@ -39,7 +39,7 @@ if (debugIndex > 0) {
 
   if (filterIndex > 0) {
     const filter = process.argv[filterIndex + 1]
-    if (filter && !filter.startsWith('-')) {
+    if (filter && filter[0] !== '-') {
       process.env.VITE_DEBUG_FILTER = filter
     }
   }
@@ -65,7 +65,7 @@ function start() {
 if (profileIndex > 0) {
   process.argv.splice(profileIndex, 1)
   const next = process.argv[profileIndex]
-  if (next && !next.startsWith('-')) {
+  if (next && next[0] !== '-') {
     process.argv.splice(profileIndex, 1)
   }
   const inspector = await import('node:inspector').then((r) => r.default)

packages/vite/src/node/plugins/assetImportMetaUrl.ts

@@ -87,7 +87,7 @@ export function assetImportMetaUrlPlugin(config: ResolvedConfig): Plugin {
             const templateLiteral = (ast as any).body[0].expression
             if (templateLiteral.expressions.length) {
               const pattern = buildGlobPattern(templateLiteral)
-              if (pattern.startsWith('*')) {
+              if (pattern[0] === '*') {
                 // don't transform for patterns like this
                 // because users won't intend to do that in most cases
                 continue

packages/vite/src/node/plugins/importMetaGlob.ts

@@ -626,7 +626,7 @@ export async function toAbsoluteGlob(
   root = globSafePath(root)
   let dir
   if (base) {
-    if (base.startsWith('/')) {
+    if (base[0] === '/') {
       dir = posix.join(root, base)
     } else {
       dir = posix.resolve(

packages/vite/src/node/server/middlewares/transform.ts

@@ -228,7 +228,7 @@ export function transformMiddleware(
         const result = await environment.transformRequest(url, {
           allowId(id) {
             return (
-              id.startsWith('\0') ||
+              id[0] === '\0' ||
               !isServerAccessDeniedForTransform(server.config, id)
             )
           },