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tests/cases/compiler/tupleTypes.ts(11,12): error TS2493: Tuple type '[number, string]' of length '2' has no element at index '2'.
tests/cases/compiler/tupleTypes.ts(12,5): error TS2403: Subsequent variable declarations must have the same type. Variable 't2' must be of type 'undefined', but here has type 'string | number'.
tests/cases/compiler/tupleTypes.ts(14,1): error TS2322: Type '[]' is not assignable to type '[number, string]'.
Source has 0 element(s) but target requires 2.
tests/cases/compiler/tupleTypes.ts(15,1): error TS2322: Type '[number]' is not assignable to type '[number, string]'.
Source has 1 element(s) but target requires 2.
tests/cases/compiler/tupleTypes.ts(17,6): error TS2322: Type 'string' is not assignable to type 'number'.
tests/cases/compiler/tupleTypes.ts(17,15): error TS2322: Type 'number' is not assignable to type 'string'.
tests/cases/compiler/tupleTypes.ts(18,1): error TS2322: Type '[number, string, number]' is not assignable to type '[number, string]'.
Source has 3 element(s) but target allows only 2.
tests/cases/compiler/tupleTypes.ts(35,14): error TS2493: Tuple type '[number, string]' of length '2' has no element at index '2'.
tests/cases/compiler/tupleTypes.ts(36,5): error TS2403: Subsequent variable declarations must have the same type. Variable 'tt2' must be of type 'undefined', but here has type 'string | number'.
tests/cases/compiler/tupleTypes.ts(41,1): error TS2322: Type '[]' is not assignable to type '[number, string]'.
tests/cases/compiler/tupleTypes.ts(47,1): error TS2322: Type '[number, string]' is not assignable to type 'number[]'.
Type 'string | number' is not assignable to type 'number'.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/tupleTypes.ts(49,1): error TS2322: Type '[number, {}]' is not assignable to type 'number[]'.
Type 'number | {}' is not assignable to type 'number'.
Type '{}' is not assignable to type 'number'.
tests/cases/compiler/tupleTypes.ts(50,1): error TS2322: Type '[number, number]' is not assignable to type '[number, string]'.
Type 'number' is not assignable to type 'string'.
tests/cases/compiler/tupleTypes.ts(51,1): error TS2322: Type '[number, {}]' is not assignable to type '[number, string]'.
Type '{}' is not assignable to type 'string'.
==== tests/cases/compiler/tupleTypes.ts (14 errors) ====
var v1: []; // Error
var v2: [number];
var v3: [number, string];
var v4: [number, [string, string]];
var t: [number, string];
var t0 = t[0]; // number
var t0: number;
var t1 = t[1]; // string
var t1: string;
var t2 = t[2]; // number|string
~
!!! error TS2493: Tuple type '[number, string]' of length '2' has no element at index '2'.
var t2: number|string;
~~
!!! error TS2403: Subsequent variable declarations must have the same type. Variable 't2' must be of type 'undefined', but here has type 'string | number'.
!!! related TS6203 tests/cases/compiler/tupleTypes.ts:11:5: 't2' was also declared here.
t = []; // Error
~
!!! error TS2322: Type '[]' is not assignable to type '[number, string]'.
!!! error TS2322: Source has 0 element(s) but target requires 2.
t = [1]; // Error
~
!!! error TS2322: Type '[number]' is not assignable to type '[number, string]'.
!!! error TS2322: Source has 1 element(s) but target requires 2.
t = [1, "hello"]; // Ok
t = ["hello", 1]; // Error
~~~~~~~
!!! error TS2322: Type 'string' is not assignable to type 'number'.
~
!!! error TS2322: Type 'number' is not assignable to type 'string'.
t = [1, "hello", 2]; // Error
~
!!! error TS2322: Type '[number, string, number]' is not assignable to type '[number, string]'.
!!! error TS2322: Source has 3 element(s) but target allows only 2.
var tf: [string, (x: string) => number] = ["hello", x => x.length];
declare function ff<T, U>(a: T, b: [T, (x: T) => U]): U;
var ff1 = ff("hello", ["foo", x => x.length]);
var ff1: number;
function tuple2<T0, T1>(item0: T0, item1: T1): [T0, T1]{
return [item0, item1];
}
var tt = tuple2(1, "string");
var tt0 = tt[0];
var tt0: number;
var tt1 = tt[1];
var tt1: string;
var tt2 = tt[2];
~
!!! error TS2493: Tuple type '[number, string]' of length '2' has no element at index '2'.
var tt2: number | string;
~~~
!!! error TS2403: Subsequent variable declarations must have the same type. Variable 'tt2' must be of type 'undefined', but here has type 'string | number'.
!!! related TS6203 tests/cases/compiler/tupleTypes.ts:35:5: 'tt2' was also declared here.
tt = tuple2(1, undefined);
tt = [1, undefined];
tt = [undefined, undefined];
tt = []; // Error
~~
!!! error TS2322: Type '[]' is not assignable to type '[number, string]'.
var a: number[];
var a1: [number, string];
var a2: [number, number];
var a3: [number, {}];
a = a1; // Error
~
!!! error TS2322: Type '[number, string]' is not assignable to type 'number[]'.
!!! error TS2322: Type 'string | number' is not assignable to type 'number'.
!!! error TS2322: Type 'string' is not assignable to type 'number'.
a = a2;
a = a3; // Error
~
!!! error TS2322: Type '[number, {}]' is not assignable to type 'number[]'.
!!! error TS2322: Type 'number | {}' is not assignable to type 'number'.
!!! error TS2322: Type '{}' is not assignable to type 'number'.
a1 = a2; // Error
~~
!!! error TS2322: Type '[number, number]' is not assignable to type '[number, string]'.
!!! error TS2322: Type 'number' is not assignable to type 'string'.
a1 = a3; // Error
~~
!!! error TS2322: Type '[number, {}]' is not assignable to type '[number, string]'.
!!! error TS2322: Type '{}' is not assignable to type 'string'.
a3 = a1;
a3 = a2;
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