Applies the TypeScript compiler during Vite transform build phase.

This plugin may allow the use of language features not yet supported by vite's default compiler, esbuild.

npm install --save-dev vite-plugin-typescript-transform

See the Options interface and its inline documentation.

This plugin does not change or disable any of vite's compiler/features/options. It only transpiles the code using the typescript compiler and lets vite move on with the transpiled code.

The new ECMAScript decorators are not supported by esbuild (yet), but they are supported by typescript since v5 (see the announcement). This example down-levels the new decorators into code that is usable in runtimes that do not yet support it.

import ts from 'typescript';
import { defineConfig } from 'vite';
import { vitePluginTypescriptTransform } from 'vite-plugin-typescript-transform';

export default defineConfig({
  // ...your vite configuration
  plugins: [
    vitePluginTypescriptTransform({
      enforce: 'pre',
      filter: {
        files: {
          include: /\.ts$/,
        },
      },
      tsconfig: {
        override: {
          target: ts.ScriptTarget.ES2021,
        },
      },
    }),
  ],
});