Microsoft/TypeScript

lib.es*.d.ts: constructor methods

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#44 883 ouverte le 3 juil. 2021

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BugDomain: lib.d.tsHelp Wanted

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Description

lib Update Request

Configuration Check

My compilation target is ES2015 and my lib is the default.

Missing / Incorrect Definition

Array and other interfaces for built-ins do not declare their own constructor methods

Sample Code

[].constructor[Symbol.species];
Element implicitly has an 'any' type because expression of type 'unique symbol' can't be used to index type 'Function'.
  Property '[SymbolConstructor.species]' does not exist on type 'Function'.

The code compiles fine when defining the appropriate constructor method:

declare global {
  interface Array<T> {
    constructor: ArrayConstructor;
  }
}

Playground link

Documentation Link

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/constructor

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