Why does IntelliJ propose RegExp.[Symbol.matchAll] instead of RegExp.matchAll?-CodePudding

The code-completion in IntelliJ only proposes RegExp.[Symbol.matchAll], but not RegExp.matchAll:

Typescript config settings:

  "compilerOptions": {
    "lib": ["es2020"],
    "target": "es2020",
  },

What can be the reason for this?

More info:

/x/[Symbol.matchAll]("axb") works at runtime (NodeJs 14).
string.matchAll() works, but RegExp.matchAll() doesn't:
Typescript version 4.3.5

CodePudding user response：

Because there is no Regex.prototype.matchAll method.

There is a String.prototype.matchAll method (which calls the method keyed to Symbol.matchAll under the hood), and there is a method on Regex.prototype[Symbol.matchAll] that behaves similarly, which is why your IDE is autocompleting it that way for you. Not sure why they decided to have the convenience method for Strings but not Regexes.