File: contextualTypeOfIndexedAccessParameter.js

package info (click to toggle)
node-typescript 3.3.3333-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 324,548 kB
  • sloc: makefile: 6; sh: 3
file content (25 lines) | stat: -rw-r--r-- 511 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
//// [contextualTypeOfIndexedAccessParameter.ts]
type Keys = "a" | "b";

type OptionsForKey = { a: { cb: (p: number) => number } } & { b: {} };

declare function f<K extends Keys>(key: K, options: OptionsForKey[K]): void;

f("a", {
    cb: p => p,
});

function g<
    K extends "a" | "b">(x: ({ a: string } & { b: string })[K], y: string) {
    x = y;
}


//// [contextualTypeOfIndexedAccessParameter.js]
"use strict";
f("a", {
    cb: function (p) { return p; }
});
function g(x, y) {
    x = y;
}