tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(4,28): error TS4031: Public property '[Symbol.iterator]' of exported class has or is using private name 'I'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(5,9): error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(5,33): error TS4073: Parameter 'x' of public method from exported class has or is using private name 'I'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(6,40): error TS4055: Return type of public method from exported class has or is using private name 'I'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(9,13): error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(10,13): error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts(10,37): error TS4037: Parameter '[Symbol.toPrimitive]' of public property setter from exported class has or is using private name 'I'. ==== tests/cases/conformance/es6/Symbols/symbolDeclarationEmit12.ts (7 errors) ==== module M { interface I { } export class C { [Symbol.iterator]: I; ~ !!! error TS4031: Public property '[Symbol.iterator]' of exported class has or is using private name 'I'. [Symbol.toPrimitive](x: I) { } ~~~~~~~~~~~~~~~~~~~~ !!! error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. ~ !!! error TS4073: Parameter 'x' of public method from exported class has or is using private name 'I'. [Symbol.isConcatSpreadable](): I { ~ !!! error TS4055: Return type of public method from exported class has or is using private name 'I'. return undefined } get [Symbol.toPrimitive]() { return undefined; } ~~~~~~~~~~~~~~~~~~~~ !!! error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. set [Symbol.toPrimitive](x: I) { } ~~~~~~~~~~~~~~~~~~~~ !!! error TS2300: Duplicate identifier '[Symbol.toPrimitive]'. ~ !!! error TS4037: Parameter '[Symbol.toPrimitive]' of public property setter from exported class has or is using private name 'I'. } }