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rollup.config.js
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rollup.config.js
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import typescript from 'rollup-plugin-typescript2';
import { terser } from 'rollup-plugin-terser';
import { execSync } from 'child_process';
const isPreact = process.env.PREACT === 'true';
const pkg = require(isPreact ? './preact/package.json' : './package.json');
const prefix = (arg) => (isPreact ? `./preact/${arg}` : arg);
if (isPreact) {
// Run preact transform
execSync(
'$(npm bin)/babel src --out-dir preact/src --plugins @babel/plugin-syntax-typescript,./react-to-preact.js --extensions .ts --out-file-extension .ts'
);
}
export default {
input: isPreact ? 'preact/src/index.ts' : 'src/index.ts',
output: [
{
file: prefix(pkg.main),
format: 'cjs',
sourcemap: true,
},
{
file: prefix(pkg.module),
format: 'es',
sourcemap: true,
},
{
file: prefix(pkg['umd:main']),
format: 'umd',
sourcemap: true,
name: 'fielder',
globals: isPreact
? { preact: 'preact', 'preact/hooks': 'preact' }
: { react: 'react' },
},
],
external: [
...Object.keys(pkg.dependencies || {}),
...Object.keys(pkg.peerDependencies || {}),
],
plugins: [
typescript({
tsconfigOverride: isPreact
? { exclude: ['./src'], include: ['./preact/src'] }
: undefined,
}),
terser({}),
],
};