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tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(10,5): error TS2322: Type '[]' is not assignable to type '[any, any, any]'.
Source has 0 element(s) but target requires 3.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,38): error TS2322: Type 'string' is not assignable to type 'boolean'.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,48): error TS2322: Type 'number' is not assignable to type 'string'.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,51): error TS2322: Type 'boolean' is not assignable to type 'number'.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(17,5): error TS2322: Type '[number, number, string, boolean]' is not assignable to type '[number, number]'.
Source has 4 element(s) but target allows only 2.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(33,5): error TS2322: Type 'number[]' is not assignable to type '[number, number, number]'.
Target requires 3 element(s) but source may have fewer.
tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(34,5): error TS2322: Type '(string | number)[]' is not assignable to type 'myArray'.
Type 'string | number' is not assignable to type 'Number'.
Type 'string' is not assignable to type 'Number'.
==== tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts (7 errors) ====
// Each element expression in a non-empty array literal is processed as follows:
// - If the array literal contains no spread elements, and if the array literal is contextually typed (section 4.19)
// by a type T and T has a property with the numeric name N, where N is the index of the element expression in the array literal,
// the element expression is contextually typed by the type of that property.
// The resulting type an array literal expression is determined as follows:
// - If the array literal contains no spread elements and is contextually typed by a tuple-like type,
// the resulting type is a tuple type constructed from the types of the element expressions.
var a0: [any, any, any] = []; // Error
~~
!!! error TS2322: Type '[]' is not assignable to type '[any, any, any]'.
!!! error TS2322: Source has 0 element(s) but target requires 3.
var a1: [boolean, string, number] = ["string", 1, true]; // Error
~~~~~~~~
!!! error TS2322: Type 'string' is not assignable to type 'boolean'.
~
!!! error TS2322: Type 'number' is not assignable to type 'string'.
~~~~
!!! error TS2322: Type 'boolean' is not assignable to type 'number'.
// The resulting type an array literal expression is determined as follows:
// - If the array literal contains no spread elements and is an array assignment pattern in a destructuring assignment (section 4.17.1),
// the resulting type is a tuple type constructed from the types of the element expressions.
var [b1, b2]: [number, number] = [1, 2, "string", true];
~~~~~~~~
!!! error TS2322: Type '[number, number, string, boolean]' is not assignable to type '[number, number]'.
!!! error TS2322: Source has 4 element(s) but target allows only 2.
// The resulting type an array literal expression is determined as follows:
// - the resulting type is an array type with an element type that is the union of the types of the
// non - spread element expressions and the numeric index signature types of the spread element expressions
var temp = ["s", "t", "r"];
var temp1 = [1, 2, 3];
var temp2: [number[], string[]] = [[1, 2, 3], ["hello", "string"]];
interface tup {
0: number[]|string[];
1: number[]|string[];
}
interface myArray extends Array<Number> { }
interface myArray2 extends Array<Number|String> { }
var c0: tup = [...temp2]; // Error
var c1: [number, number, number] = [...temp1]; // Error cannot assign number[] to [number, number, number]
~~
!!! error TS2322: Type 'number[]' is not assignable to type '[number, number, number]'.
!!! error TS2322: Target requires 3 element(s) but source may have fewer.
var c2: myArray = [...temp1, ...temp]; // Error cannot assign (number|string)[] to number[]
~~
!!! error TS2322: Type '(string | number)[]' is not assignable to type 'myArray'.
!!! error TS2322: Type 'string | number' is not assignable to type 'Number'.
!!! error TS2322: Type 'string' is not assignable to type 'Number'.
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