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=== tests/cases/conformance/types/tuple/unionsOfTupleTypes1.ts ===
type T1 = [string, number];
>T1 : [string, number]
type T2 = [boolean] | [string, number];
>T2 : [boolean] | [string, number]
type T3 = [string, ...number[]];
>T3 : [string, ...number[]]
type T4 = [boolean] | [string, ...number[]];
>T4 : [boolean] | [string, ...number[]]
type T10 = T1[0]; // string
>T10 : string
type T11 = T1[1]; // number
>T11 : number
type T12 = T1[2]; // undefined
>T12 : undefined
type T1N = T1[number]; // string | number
>T1N : string | number
type T20 = T2[0]; // string | boolean
>T20 : string | boolean
type T21 = T2[1]; // number | undefined
>T21 : number | undefined
type T22 = T2[2]; // undefined
>T22 : undefined
type T2N = T2[number]; // string | number | boolean
>T2N : string | number | boolean
type T30 = T3[0]; // string
>T30 : string
type T31 = T3[1]; // number
>T31 : number
type T32 = T3[2]; // number
>T32 : number
type T3N = T3[number]; // string | number
>T3N : string | number
type T40 = T4[0]; // string | boolean
>T40 : string | boolean
type T41 = T4[1]; // number | undefined
>T41 : number | undefined
type T42 = T4[2]; // number | undefined
>T42 : number | undefined
type T4N = T4[number]; // string | number | boolean
>T4N : string | number | boolean
function f1(t1: T1, t2: T2, t3: T3, t4: T4, x: number) {
>f1 : (t1: T1, t2: T2, t3: T3, t4: T4, x: number) => void
>t1 : T1
>t2 : T2
>t3 : T3
>t4 : T4
>x : number
let [d10, d11, d12] = t1; // string, number
>d10 : string
>d11 : number
>d12 : undefined
>t1 : T1
let [d20, d21, d22] = t2; // string | boolean, number | undefined
>d20 : string | boolean
>d21 : number | undefined
>d22 : undefined
>t2 : T2
let [d30, d31, d32] = t3; // string, number, number
>d30 : string
>d31 : number
>d32 : number
>t3 : T3
let [d40, d41, d42] = t4; // string | boolean, number | undefined, number | undefined
>d40 : string | boolean
>d41 : number | undefined
>d42 : number | undefined
>t4 : T4
[d10, d11, d12] = t1;
>[d10, d11, d12] = t1 : T1
>[d10, d11, d12] : [string, number, undefined]
>d10 : string
>d11 : number
>d12 : undefined
>t1 : T1
[d20, d21, d22] = t2;
>[d20, d21, d22] = t2 : T2
>[d20, d21, d22] : [string | boolean, number | undefined, undefined]
>d20 : string | boolean
>d21 : number | undefined
>d22 : undefined
>t2 : T2
[d30, d31, d32] = t3;
>[d30, d31, d32] = t3 : T3
>[d30, d31, d32] : [string, number, number]
>d30 : string
>d31 : number
>d32 : number
>t3 : T3
[d40, d41, d42] = t4;
>[d40, d41, d42] = t4 : T4
>[d40, d41, d42] : [string | boolean, number | undefined, number | undefined]
>d40 : string | boolean
>d41 : number | undefined
>d42 : number | undefined
>t4 : T4
let t10 = t1[0]; // string
>t10 : string
>t1[0] : string
>t1 : T1
>0 : 0
let t11 = t1[1]; // number
>t11 : number
>t1[1] : number
>t1 : T1
>1 : 1
let t12 = t1[2]; // undefined
>t12 : undefined
>t1[2] : undefined
>t1 : T1
>2 : 2
let t1x = t1[x]; // string | number
>t1x : string | number
>t1[x] : string | number
>t1 : T1
>x : number
let t20 = t2[0]; // string | boolean
>t20 : string | boolean
>t2[0] : string | boolean
>t2 : T2
>0 : 0
let t21 = t2[1]; // number | undefined
>t21 : number | undefined
>t2[1] : number | undefined
>t2 : T2
>1 : 1
let t22 = t2[2]; // undefined
>t22 : undefined
>t2[2] : undefined
>t2 : T2
>2 : 2
let t2x = t2[x]; // string | number | boolean
>t2x : string | number | boolean
>t2[x] : string | number | boolean
>t2 : T2
>x : number
let t30 = t3[0]; // string
>t30 : string
>t3[0] : string
>t3 : T3
>0 : 0
let t31 = t3[1]; // number
>t31 : number
>t3[1] : number
>t3 : T3
>1 : 1
let t32 = t3[2]; // number
>t32 : number
>t3[2] : number
>t3 : T3
>2 : 2
let t3x = t3[x]; // string | number
>t3x : string | number
>t3[x] : string | number
>t3 : T3
>x : number
let t40 = t4[0]; // string | boolean
>t40 : string | boolean
>t4[0] : string | boolean
>t4 : T4
>0 : 0
let t41 = t4[1]; // number | undefined
>t41 : number | undefined
>t4[1] : number | undefined
>t4 : T4
>1 : 1
let t42 = t4[2]; // number | undefined
>t42 : number | undefined
>t4[2] : number | undefined
>t4 : T4
>2 : 2
let t4x = t4[x]; // string | number | boolean
>t4x : string | number | boolean
>t4[x] : string | number | boolean
>t4 : T4
>x : number
t1[1] = 42;
>t1[1] = 42 : 42
>t1[1] : number
>t1 : T1
>1 : 1
>42 : 42
t2[1] = 42;
>t2[1] = 42 : 42
>t2[1] : number | undefined
>t2 : T2
>1 : 1
>42 : 42
t3[1] = 42;
>t3[1] = 42 : 42
>t3[1] : number
>t3 : T3
>1 : 1
>42 : 42
t4[1] = 42;
>t4[1] = 42 : 42
>t4[1] : number | undefined
>t4 : T4
>1 : 1
>42 : 42
}
// Repro from #27543
type Unioned = [string] | [string, number];
>Unioned : [string, number] | [string]
const ex: Unioned = ["hi"] as Unioned;
>ex : Unioned
>["hi"] as Unioned : Unioned
>["hi"] : [string]
>"hi" : "hi"
const [x, y] = ex;
>x : string
>y : number | undefined
>ex : Unioned
|
