Function.prototype.bind doesn't read all overloads #48199
Description
Bug Report
🔎 Search Terms
bind overload signature
🕗 Version & Regression Information
- This is the behavior in every version I tried, and I reviewed the FAQ for entries about bind and method overload
⏯ Playground Link
Playground link with relevant code
💻 Code
method(x:number): string;
method(x:string): number;
method(x:string | number): string | number {
if (typeof x === 'string') return 0;
return '';
}
method1: () => string;
method2: () => number;
constructor() {
this.method1 = this.method.bind(this, 0);
this.method2 = this.method.bind(this, '');
}
}
🙁 Actual behavior
in method1's definition, typescript only reads one of the two method signatures (the first one) when you use bind on it.
🙂 Expected behavior
TypeScript should read all the available signatures when you call the bind method on your method. Because that's the purpose of method overloads.