Purpose

To choose the best ways to implement NestJS builder tools

Preparing

Start nestjs project by command:

nest new nest-swc-test

Implement build with swc:

npm i --save-dev @swc/cli @swc/core

# this step will be run after build with the default tool
# Add builder swc in nest-cli.json file
{
  "compilerOptions": {
    "builder": "swc"
  }
}

Implement with vite

npm install --save-dev vite @vitejs/plugin-vue @vitejs/plugin-react

# create a 'vite.config.js' file in the root of project
import { defineConfig } from 'vite';
import vue from '@vitejs/plugin-vue';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [vue(), react()],
  build: {
    rollupOptions: {
      input: 'src/main.ts',
      output: {
        dir: 'dist',
        format: 'cjs',
      },
    },
  },
});
# add this script in package.json file 
"build:vite": "vite build"
# command to build with vite
npm run build:vite

Build time

1. build with tsc (default of nestjs)

time npm run build

2. build with swc

notice that add builder: swc in the nest-cli.json file before run this command

time npm run build

3. build with vite

time npm run build:vite

Conclusions

Using SWC help for build faster than tsc and vite
With this benefit, SWC can be use in development process (run code faster)
More information about SWC