vitest.config.ts

import { defineConfig,mergeConfig} from 'vitest/config'
import path from 'path'

export const nodejsPolarsDirnamePlugin = () => {
    const name = 'nodejs-polars-dirname-plugin'
    return {
        name,
        
        transform(code: string, id: string) {
            // aim for the node_modules/nodejs-polars/bin/native-polars.js file
            
            if (id.endsWith('.node')) {
                const file = path.basename(id)
                return `
                // create a custom require function to load .node files
                import { createRequire } from 'module';
                const customRequire = createRequire(import.meta.url)

                // load the .node file expecting it to be in the same directory as the output bundle
                const content = customRequire('./${file}')

                // export the content straight back out again
                export default content
                `
            }
            // else return the original code (leave code unrelated to nodejs-polars untouched)
            return code
        },
    }
}
export default  defineConfig({
  test: {
    
    
  },
  plugins: [
    nodejsPolarsDirnamePlugin()
  ]
  
})