build.js

const { build } = require('esbuild');
const { copyFile } = require('fs/promises');
const { resolve } = require('path');

async function buildPackage() {
  try {
    // Build ESM version
    await build({
      entryPoints: ['./src/index.ts'],
      outfile: './dist/index.mjs',
      format: 'esm',
      platform: 'node',
      target: 'es2018',
      bundle: true,
      external: ['zod'],
    });

    // Build CommonJS version
    await build({
      entryPoints: ['./src/index.ts'],
      outfile: './dist/index.js',
      format: 'cjs',
      platform: 'node',
      target: 'es2018',
      bundle: true,
      external: ['zod'],
    });

    // Copy the TypeScript declarations
    await copyFile(
      resolve('./dist/index.d.ts'),
      resolve('./dist/index.d.mts')
    ).catch(err => {
      // Ignore if the file doesn't exist, as TypeScript doesn't generate .d.mts files
      if (err.code !== 'ENOENT') {
        throw err;
      }
    });

    console.log('✅ Build completed');
  } catch (err) {
    console.error('❌ Build failed:', err);
    process.exit(1);
  }
}

buildPackage();