feat!: set esbuild default charset to utf8 (#10753)

Author: azat-io

packages/vite/src/node/__tests__/plugins/esbuild.spec.ts

@@ -17,6 +17,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: 'es2020',
       format: 'esm',
       keepNames: true,
@@ -59,6 +60,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'esm',
       keepNames: true,
@@ -88,6 +90,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: 'es2020',
       format: 'esm',
       keepNames: true,
@@ -119,6 +122,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'esm',
       keepNames: true,
@@ -150,6 +154,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'cjs'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'cjs',
       keepNames: true,
@@ -180,6 +185,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'esm',
       keepNames: true,
@@ -214,6 +220,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'cjs'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'cjs',
       keepNames: true,

packages/vite/src/node/optimizer/index.ts

@@ -612,6 +612,7 @@ export async function runOptimizeDeps(
     ignoreAnnotations: !isBuild,
     metafile: true,
     plugins,
+    charset: 'utf8',
     ...esbuildOptions,
     supported: {
       'dynamic-import': true,

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

@@ -180,6 +180,7 @@ export function esbuildPlugin(options: ESBuildOptions = {}): Plugin {
   // and for build as the final optimization is in `buildEsbuildPlugin`
   const transformOptions: TransformOptions = {
     target: 'esnext',
+    charset: 'utf8',
     ...options,
     minify: false,
     minifyIdentifiers: false,
@@ -306,7 +307,9 @@ export function resolveEsbuildTranspileOptions(
   // https://github.com/vuejs/core/issues/2860#issuecomment-926882793
   const isEsLibBuild = config.build.lib && format === 'es'
   const esbuildOptions = config.esbuild || {}
+
   const options: TransformOptions = {
+    charset: 'utf8',
     ...esbuildOptions,
     target: target || undefined,
     format: rollupToEsbuildFormatMap[format],