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Firefox for Web Developers

@webdevs.firefox.com

map.getOrInsertComputed is newly baseline! It's a small feature, but I've found it pretty useful. Here's how it works:

16/4/26, 1:28 pm6 reposts41 likes

Firefox for Web Developers

@webdevs.firefox.com

Full docs and polyfills on MDN developer.mozilla.org/en-US/docs/W...

developer.mozilla.orgWeakMap.prototype.getOrInsertComputed() - JavaScript | MDNThe getOrInsertComputed() method of WeakMap instances returns the value corresponding to the specified key in this WeakMap. If the key is not present, it inserts a new entry with the key and a…