How to exclude `*.test.ts` from Vite 5

Question

I'm using Vite 5. I want to exclude my *.test.ts files from bundling by Vite5.

Here is my vite.config.js:

import {defineConfig} from "vite";
import react from "@vitejs/plugin-react";
import dts from "vite-plugin-dts";
import tsconfigPaths from "vite-tsconfig-paths";
import {resolve} from "path";

// https://vitejs.dev/config/
export default defineConfig(({mode}) => {
    const prod = mode === "prod";

    return {
        plugins: [react(), dts(), tsconfigPaths()],
        build: {
            lib: {
                entry: resolve(__dirname, "./src/App.tsx"),
                formats: ["es"],
            },
            rollupOptions: {
                external: [
                    "react",
                    "react-dom",
                ],
            },
            sourcemap: !prod,
        },
    };
});

I've tried:

• rollupOptions.external: ["**.test.ts"]
• rollupOptions.external: [src => src.indexOf("*.test.ts") !== -1]

but it doesn't work.

How can I exclude that files?

Answer 1

My problem was that temp.test.d.ts file was included in dist/. I thought it because of Vite bundling option. However it's not a problem about Vite but dts plugin. (Because creating d.ts file is dts's responsibility)

So I solved it by changing the config to:

import {defineConfig} from "vite";
import react from "@vitejs/plugin-react";
import dts from "vite-plugin-dts";
import tsconfigPaths from "vite-tsconfig-paths";
import {resolve} from "path";

// https://vitejs.dev/config/
export default defineConfig(({mode}) => {
    const prod = mode === "prod";

    return {
        plugins: [react(), dts({exclude: "**/*.test.ts"}), tsconfigPaths()], // the key change is here
        build: {
            lib: {
                entry: resolve(__dirname, "./src/App.tsx"),
                formats: ["es"],
            },
            rollupOptions: {
                external: [
                    "react",
                    "react-dom",
                ],
            },
            sourcemap: !prod,
        },
    };
});