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Add BigInt bundle #167

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20 changes: 18 additions & 2 deletions package-lock.json

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4 changes: 3 additions & 1 deletion package.json
Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,8 @@
"default": "./dist/index.cjs"
},
"./dist/index.cjs"
]
],
"./bigint": "./dist/bigint/index.esm.js"
},
"types": "./index.d.ts",
"scripts": {
Expand Down Expand Up @@ -90,6 +91,7 @@
"@rollup/plugin-typescript": "^8.3.0",
"@typescript-eslint/eslint-plugin": "^5.7.0",
"@typescript-eslint/parser": "^5.7.0",
"babel-plugin-transform-jsbi-to-bigint": "^1.4.0",
"eslint": "^8.4.1",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-prettier": "^4.0.0",
Expand Down
20 changes: 11 additions & 9 deletions rollup.config.js
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import commonjs from '@rollup/plugin-commonjs';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import babel from '@rollup/plugin-babel';
import babel, { getBabelOutputPlugin } from '@rollup/plugin-babel';
import replace from '@rollup/plugin-replace';
import { terser } from 'rollup-plugin-terser';
import { env } from 'process';
Expand Down Expand Up @@ -57,16 +57,21 @@ const external = [
...Object.keys(pkg.peerDependencies || {})
].map((dep) => new RegExp(dep + '*'));

function outputEntry(file, format) {
function outputEntry(file, format, plugins = []) {
return {
name: libName,
file,
format,
exports: 'named',
sourcemap: true
sourcemap: true,
plugins
};
}

const bigintBabelConfig = {
plugins: ['transform-jsbi-to-bigint']
};

const es5BundleBabelConfig = {
babelHelpers: 'bundled',
presets: [
Expand Down Expand Up @@ -130,16 +135,13 @@ if (isTest262Build) {
// CJS bundle.
// Note that because package.json specifies "type":"module", the name of
// this file MUST end in ".cjs" in order to be treated as a CommonJS file.
outputEntry(pkg.main, 'cjs')
outputEntry(pkg.main, 'cjs'),
// BigInt bundle
outputEntry(pkg.exports['./bigint'], 'es', [getBabelOutputPlugin(bigintBabelConfig)])
],
plugins: withPlugins({
debugBuild: !isProduction,
optimize: isProduction
// Here is where we could insert the JSBI -> native BigInt plugin if we
// could find a way to provide a separate bundle for modern browsers
// that can use native BigInt.
// Maybe use node's exports + a user-defined condition?
// https://nodejs.org/api/packages.html#resolving-user-conditions
})
};
// A legacy build that
Expand Down