@futagoza/core-js (npm): Ponyfill's for some native ES2017+ built-in methods
Keywords: ponyfill|built-in|es8|es2017|es9|es2018|esnext|stage-0|stage-1|stage-2|stage-3|stage-4|Array.prototype.flatten|Array.prototype.flat|Array.prototype.flatMap|Array.prototype.lastIndex|Array.prototype.lastItem|Math.clamp|Math.DEG_PER_RAD|Math.degrees|Math.fscale|Math.RAD_PER_DEG|Math.radians|Math.scale|Object.entries|Object.fromEntries|Object.values