File: typePredicateWithThisParameter.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 (43 lines) | stat: -rw-r--r-- 694 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
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
//// [typePredicateWithThisParameter.ts]
// Repro from #15310

interface Foo {
    foo: string;
}
interface Bar {
    bar: string;
}

function isFoo1(object: {}): object is Foo {
    return 'foo' in object;
}

function isFoo2(this: void, object: {}): object is Foo {
    return 'foo' in object;
}

declare let test: Foo | Bar;

if (isFoo1(test)) {
    test.foo = 'hi';
}

if (isFoo2(test)) {
    test.foo = 'hi';
}


//// [typePredicateWithThisParameter.js]
// Repro from #15310
function isFoo1(object) {
    return 'foo' in object;
}
function isFoo2(object) {
    return 'foo' in object;
}
if (isFoo1(test)) {
    test.foo = 'hi';
}
if (isFoo2(test)) {
    test.foo = 'hi';
}