import { defineConfig } from 'rollup';
import typescript from '@rollup/plugin-typescript';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import alias from '@rollup/plugin-alias';
import { fileURLToPath } from 'node:url';
import { dirname } from 'node:path';
import { readFileSync } from 'node:fs';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const packageJsonPath = `${__dirname}/package.json`;
const packageJson = JSON.parse(readFileSync(packageJsonPath, 'utf-8'));

const dependencies = Object.keys(packageJson.dependencies || {});
const peerDependencies = Object.keys(packageJson.peerDependencies || {});
const external = [...dependencies, ...peerDependencies];

export default defineConfig({
  input: 'src/index.ts',
  output: [
    {
      file: 'dist/index.cjs.js',
      format: 'cjs',
      sourcemap: true,
    },
    {
      file: 'dist/index.esm.js',
      format: 'esm',
      sourcemap: true,
    },
  ],
  plugins: [
    alias({
      entries: [
        { find: '~', replacement: `${__dirname}/src` }
      ]
    }),
    resolve(),
    commonjs(),
    typescript({ tsconfig: './tsconfig.json' }),
  ],
  external,
});