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tests/cases/conformance/es6/Symbols/symbolProperty24.ts(5,7): error TS2420: Class 'C' incorrectly implements interface 'I'.
Types of property '[Symbol.toPrimitive]' are incompatible.
Type '() => string' is not assignable to type '() => boolean'.
Type 'string' is not assignable to type 'boolean'.
==== tests/cases/conformance/es6/Symbols/symbolProperty24.ts (1 errors) ====
interface I {
[Symbol.toPrimitive]: () => boolean;
}
class C implements I {
~
!!! error TS2420: Class 'C' incorrectly implements interface 'I'.
!!! error TS2420: Types of property '[Symbol.toPrimitive]' are incompatible.
!!! error TS2420: Type '() => string' is not assignable to type '() => boolean'.
!!! error TS2420: Type 'string' is not assignable to type 'boolean'.
[Symbol.toPrimitive]() {
return "";
}
}
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