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node.jsv8

why doesn't NodeJS support String.prototype.replaceAll?

This string method exists in browserland, but not in Node. Why not? It's neither brand-new nor exotic.

  • replaceAll is part of ECMA-262 src
  • replaceAll is described in detail on the V8 blog (added in v8.1) src
  • NodeJS upgraded to V8 v8.1 with NodeJS v14.0 src

And yet:

$ node
Welcome to Node.js v14.13.1.
Type ".help" for more information.
> 'asdf'.replaceAll
undefined

I'm not asking for polyfills; I can do a regex or loop over single-instance replace. I'm trying to figure out why this seemingly unremarkable feature doesn't exist in NodeJS, even though it seems to be available in just about every other JS environment, and even though all the docs suggest to me that it should exist.

Solution

  • Nodejs v14 has V8 8.4 But, replaceAll was added to V8 8.5. Nodejs v15 has V8 8.6 and thus that's the first nodejs version where you can use .replaceAll(). You can see this all described in the nodejs v15 release notes or in this specific change report.