tests/cases/conformance/es6/Symbols/symbolProperty42.ts(3,12): error TS2388: Function overload must not be static. tests/cases/conformance/es6/Symbols/symbolProperty42.ts(4,5): error TS2387: Function overload must be static. ==== tests/cases/conformance/es6/Symbols/symbolProperty42.ts (2 errors) ==== class C { [Symbol.iterator](x: string): string; static [Symbol.iterator](x: number): number; ~~~~~~~~~~~~~~~~~ !!! error TS2388: Function overload must not be static. [Symbol.iterator](x: any) { ~~~~~~~~~~~~~~~~~ !!! error TS2387: Function overload must be static. return undefined; } }