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 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
|
=== tests/cases/compiler/narrowByEquality.ts ===
declare let x: number | string | boolean
>x : string | number | boolean
declare let n: number;
>n : number
declare let s: string;
>s : string
declare let b: boolean;
>b : boolean
if (x == n) {
>x == n : boolean
>x : string | number | boolean
>n : number
x;
>x : string | number | boolean
}
if (x == s) {
>x == s : boolean
>x : string | number | boolean
>s : string
x;
>x : string | number | boolean
}
if (x == b) {
>x == b : boolean
>x : string | number | boolean
>b : boolean
x;
>x : string | number | boolean
}
if (x == 1) {
>x == 1 : boolean
>x : string | number | boolean
>1 : 1
x;
>x : 1
}
if (x == "") {
>x == "" : boolean
>x : string | number | boolean
>"" : ""
x;
>x : ""
}
if (x == "foo") {
>x == "foo" : boolean
>x : string | number | boolean
>"foo" : "foo"
x;
>x : "foo"
}
if (x == true) {
>x == true : boolean
>x : string | number | boolean
>true : true
x;
>x : true
}
if (x == false) {
>x == false : boolean
>x : string | number | boolean
>false : false
x;
>x : false
}
declare let xAndObj: number | string | boolean | object
>xAndObj : string | number | boolean | object
if (xAndObj == {}) {
>xAndObj == {} : boolean
>xAndObj : string | number | boolean | object
>{} : {}
xAndObj;
>xAndObj : object
}
if (x == xAndObj) {
>x == xAndObj : boolean
>x : string | number | boolean
>xAndObj : string | number | boolean | object
x;
>x : string | number | boolean
xAndObj;
>xAndObj : string | number | boolean
}
// Repro from #24991
function test(level: number | string):number {
>test : (level: number | string) => number
>level : string | number
if (level == +level) {
>level == +level : boolean
>level : string | number
>+level : number
>level : string | number
const q2: number = level; // error
>q2 : number
>level : string | number
return level;
>level : string | number
}
return 0;
>0 : 0
}
|