CenterJS is a framework for NPM scripts with JS or ECMAScript.
CenterJS includes obsolete builds for core-js if you would rather install that way.
CenterJS is on NPM for your Javascript scripts and ECMAScript. Run the following code in a desired directory.
npm i center-js
Example of usage:
import 'center-js'; // <- at the top of your entry point
Array.from(new Set([1, 2, 3, 2, 1])); // => [1, 2, 3]
[1, [2, 3], [4, [5]]].flat(2); // => [1, 2, 3, 4, 5]
Promise.resolve(32).then(x => console.log(x)); // => 32
You can load only required features:
import 'center-js/features/array/from'; // <- at the top of your entry point
import 'center-js/features/array/flat'; // <- at the top of your entry point
import 'center-js/features/set'; // <- at the top of your entry point
import 'center-js/features/promise'; // <- at the top of your entry point
Array.from(new Set([1, 2, 3, 2, 1])); // => [1, 2, 3]
[1, [2, 3], [4, [5]]].flat(2); // => [1, 2, 3, 4, 5]
Promise.resolve(32).then(x => console.log(x)); // => 32
Or use it without global namespace pollution:
import from from 'center-js-pure/features/array/from';
import flat from 'center-js-pure/features/array/flat';
import Set from 'center-js-pure/features/set';
import Promise from 'center-js-pure/features/promise';
from(new Set([1, 2, 3, 2, 1])); // => [1, 2, 3]
flat([1, [2, 3], [4, [5]]], 2); // => [1, 2, 3, 4, 5]
Promise.resolve(32).then(x => console.log(x)); // => 32