How to Polyfill node core modules using vite

Question

It seems that vite does not do automatic polyfills anymore - vite 4.0.0

How do you guys go about this? I have tried multiple variations of what I could find over the internet and none of them seems to be solid.

✘ [ERROR] The injected path "/Users/marian/code/OzoneV2/app-web/node_modules/@esbuild-plugins/node-globals-polyfill/_buffer.js" cannot be marked as external

✘ [ERROR] The injected path "/Users/marian/code/OzoneV2/app-web/node_modules/@esbuild-plugins/node-globals-polyfill/_virtual-process-polyfill_.js" cannot be marked as external

Build failed with 2 errors:
error: The injected path "/Users/marian/code/OzoneV2/app-web/node_modules/@esbuild-plugins/node-globals-polyfill/_buffer.js" cannot be marked as external
error: The injected path "/Users/marian/code/OzoneV2/app-web/node_modules/@esbuild-plugins/node-globals-polyfill/_virtual-process-polyfill_.js" cannot be marked as external

my config

// yarn add --dev @esbuild-plugins/node-globals-polyfill
import { NodeGlobalsPolyfillPlugin } from "@esbuild-plugins/node-globals-polyfill";
// yarn add --dev @esbuild-plugins/node-modules-polyfill
import { NodeModulesPolyfillPlugin } from "@esbuild-plugins/node-modules-polyfill";
// You don't need to add this to deps, it's included by @esbuild-plugins/node-modules-polyfill
import rollupNodePolyFill from "rollup-plugin-node-polyfills";

export default {
    resolve: {
        alias: {
            // This Rollup aliases are extracted from @esbuild-plugins/node-modules-polyfill,
            // see https://github.com/remorses/esbuild-plugins/blob/master/node-modules-polyfill/src/polyfills.ts
            // process and buffer are excluded because already managed
            // by node-globals-polyfill
            util: "rollup-plugin-node-polyfills/polyfills/util",
            sys: "util",
            events: "rollup-plugin-node-polyfills/polyfills/events",
            stream: "rollup-plugin-node-polyfills/polyfills/stream",
            path: "rollup-plugin-node-polyfills/polyfills/path",
            querystring: "rollup-plugin-node-polyfills/polyfills/qs",
            punycode: "rollup-plugin-node-polyfills/polyfills/punycode",
            url: "rollup-plugin-node-polyfills/polyfills/url",
            string_decoder: "rollup-plugin-node-polyfills/polyfills/string-decoder",
            http: "rollup-plugin-node-polyfills/polyfills/http",
            https: "rollup-plugin-node-polyfills/polyfills/http",
            os: "rollup-plugin-node-polyfills/polyfills/os",
            assert: "rollup-plugin-node-polyfills/polyfills/assert",
            constants: "rollup-plugin-node-polyfills/polyfills/constants",
            _stream_duplex: "rollup-plugin-node-polyfills/polyfills/readable-stream/duplex",
            _stream_passthrough: "rollup-plugin-node-polyfills/polyfills/readable-stream/passthrough",
            _stream_readable: "rollup-plugin-node-polyfills/polyfills/readable-stream/readable",
            _stream_writable: "rollup-plugin-node-polyfills/polyfills/readable-stream/writable",
            _stream_transform: "rollup-plugin-node-polyfills/polyfills/readable-stream/transform",
            timers: "rollup-plugin-node-polyfills/polyfills/timers",
            console: "rollup-plugin-node-polyfills/polyfills/console",
            vm: "rollup-plugin-node-polyfills/polyfills/vm",
            zlib: "rollup-plugin-node-polyfills/polyfills/zlib",
            tty: "rollup-plugin-node-polyfills/polyfills/tty",
            domain: "rollup-plugin-node-polyfills/polyfills/domain",
        },
    },
    optimizeDeps: {
        esbuildOptions: {
            // Node.js global to browser globalThis
            define: {
                global: "globalThis",
            },
            // Enable esbuild polyfill plugins
            plugins: [
                NodeGlobalsPolyfillPlugin({
                    process: true,
                    buffer: true,
                }),
                NodeModulesPolyfillPlugin(),
            ],
        },
    },
    build: {
        rollupOptions: {
            plugins: [
                // Enable rollup polyfills plugin
                // used during production bundling
                rollupNodePolyFill(),
            ],
        },
    },
};

Answer 1

Try using the npm package vite-plugin-node-polyfills.

Install the package via npm install --save-dev vite-plugin-node-polyfills, then add the plugin to your vite.config.ts file.

import { defineConfig } from 'vite'
import { nodePolyfills } from 'vite-plugin-node-polyfills'

export default defineConfig({
  plugins: [
    nodePolyfills(),
  ],
});

See the package repo for full customisation options: for example, you can also include only the polyfills that are relevant to your project.

plugins: [
  nodePolyfills({ include: ['fs', 'stream'] }),
],