1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
tests/cases/conformance/es6/Symbols/symbolProperty21.ts(10,5): error TS2345: Argument of type '{ [Symbol.isConcatSpreadable]: string; [Symbol.toPrimitive]: number; [Symbol.unscopables]: true; }' is not assignable to parameter of type 'I<boolean, string>'.
Object literal may only specify known properties, and '[Symbol.toPrimitive]' does not exist in type 'I<boolean, string>'.
==== tests/cases/conformance/es6/Symbols/symbolProperty21.ts (1 errors) ====
interface I<T, U> {
[Symbol.unscopables]: T;
[Symbol.isConcatSpreadable]: U;
}
declare function foo<T, U>(p: I<T, U>): { t: T; u: U };
foo({
[Symbol.isConcatSpreadable]: "",
[Symbol.toPrimitive]: 0,
~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '{ [Symbol.isConcatSpreadable]: string; [Symbol.toPrimitive]: number; [Symbol.unscopables]: true; }' is not assignable to parameter of type 'I<boolean, string>'.
!!! error TS2345: Object literal may only specify known properties, and '[Symbol.toPrimitive]' does not exist in type 'I<boolean, string>'.
[Symbol.unscopables]: true
});
|
