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rollup.config.js
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rollup.config.js
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import babel from 'rollup-plugin-babel';
import { DEFAULT_EXTENSIONS } from '@babel/core';
import { existsSync } from 'fs';
import path from 'path';
export default {
input: './src/index.ts',
output: [
{
file: './dist/index.js',
format: 'cjs',
},
{
file: './dist/index.mjs',
format: 'es',
},
],
plugins: [
{
name: 'local-resolve',
resolveId(importee, importer) {
if (!importer || path.isAbsolute(importee) || !importee.startsWith('.')) {
return null;
}
const fileName = path.basename(importee, '.js');
const dirName = path.dirname(importee);
const filePath = path.join(path.dirname(importer), dirName, `${fileName}.ts`);
return existsSync(filePath) ? filePath : null;
},
},
babel({
exclude: 'node_modules/**',
extensions: [...DEFAULT_EXTENSIONS, '.ts'],
}),
],
};