File: typePredicatesInUnion.js

package info (click to toggle)
node-typescript 4.9.5%2Bds1-2
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 533,908 kB
  • sloc: javascript: 2,018,330; makefile: 7; sh: 1
file content (23 lines) | stat: -rw-r--r-- 313 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
//// [typePredicatesInUnion.ts]
interface A {
    pred(x: {}): x is boolean;
}
interface B {
    pred(x: {}): x is string;
}

type Or = A | B;

function f(o: Or, x: {}) {
    if (o.pred(x)) {
        x;
    }
}


//// [typePredicatesInUnion.js]
function f(o, x) {
    if (o.pred(x)) {
        x;
    }
}