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Add tests for symbol properties
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‎tests/cases/conformance/es6/Symbols/symbolProperty10.ts

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//@target: ES6
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class C {
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[Symbol.iterator]: { x; y };
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}
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interface I {
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[Symbol.iterator]?: { x };
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}
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var i: I;
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i = new C;
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var c: C = i;

‎tests/cases/conformance/es6/Symbols/symbolProperty11.ts

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//@target: ES6
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class C { }
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interface I {
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[Symbol.iterator]?: { x };
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}
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var i: I;
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i = new C;
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var c: C = i;

‎tests/cases/conformance/es6/Symbols/symbolProperty12.ts

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//@target: ES6
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class C {
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private [Symbol.iterator]: { x };
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}
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interface I {
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[Symbol.iterator]: { x };
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}
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var i: I;
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i = new C;
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var c: C = i;

‎tests/cases/conformance/es6/Symbols/symbolProperty13.ts

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//@target: ES6
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class C {
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[Symbol.iterator]: { x; y };
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}
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interface I {
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[Symbol.iterator]: { x };
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}
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declare function foo(i: I): I;
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declare function foo(a: any): any;
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declare function bar(i: C): C;
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declare function bar(a: any): any;
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foo(new C);
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var i: I;
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bar(i);

‎tests/cases/conformance/es6/Symbols/symbolProperty14.ts

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//@target: ES6
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class C {
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[Symbol.iterator]: { x; y };
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}
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interface I {
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[Symbol.iterator]?: { x };
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}
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declare function foo(i: I): I;
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declare function foo(a: any): any;
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declare function bar(i: C): C;
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declare function bar(a: any): any;
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foo(new C);
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var i: I;
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bar(i);

‎tests/cases/conformance/es6/Symbols/symbolProperty15.ts

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//@target: ES6
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class C { }
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interface I {
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[Symbol.iterator]?: { x };
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}
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declare function foo(i: I): I;
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declare function foo(a: any): any;
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declare function bar(i: C): C;
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declare function bar(a: any): any;
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foo(new C);
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var i: I;
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bar(i);

‎tests/cases/conformance/es6/Symbols/symbolProperty16.ts

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//@target: ES6
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class C {
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private [Symbol.iterator]: { x };
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}
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interface I {
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[Symbol.iterator]: { x };
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}
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declare function foo(i: I): I;
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declare function foo(a: any): any;
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declare function bar(i: C): C;
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declare function bar(a: any): any;
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foo(new C);
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var i: I;
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bar(i);

‎tests/cases/conformance/es6/Symbols/symbolProperty17.ts

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//@target: ES6
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interface I {
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[Symbol.iterator]: number;
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[s: Symbol]: string;
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"__@iterator": string;
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}
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var i: I;
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var it = i[Symbol.iterator];

‎tests/cases/conformance/es6/Symbols/symbolProperty18.ts

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//@target: ES6
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var i = {
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[Symbol.iterator]: 0,
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[Symbol.toStringTag]() { return "" },
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set [Symbol.toPrimitive](p: boolean) { }
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}
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var it = i[Symbol.iterator];
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var str = i[Symbol.toStringTag]();
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i[Symbol.toPrimitive] = false;

‎tests/cases/conformance/es6/Symbols/symbolProperty19.ts

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//@target: ES6
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var i = {
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[Symbol.iterator]: { p: null },
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[Symbol.toStringTag]() { return { p: undefined }; }
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}
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var it = i[Symbol.iterator];
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var str = i[Symbol.toStringTag]();

‎tests/cases/conformance/es6/Symbols/symbolProperty20.ts

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//@target: ES6
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interface I {
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[Symbol.iterator]: (s: string) => string;
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[Symbol.toStringTag](s: number): number;
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}
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var i: I = {
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[Symbol.iterator]: s => s,
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[Symbol.toStringTag](n) { return n; }
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty21.ts

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//@target: ES6
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interface I<T, U> {
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[Symbol.unscopables]: T;
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[Symbol.isConcatSpreadable]: U;
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}
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declare function foo<T, U>(p: I<T, U>): { t: T; u: U };
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foo({
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[Symbol.isConcatSpreadable]: "",
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[Symbol.isRegExp]: 0,
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[Symbol.unscopables]: true
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});

‎tests/cases/conformance/es6/Symbols/symbolProperty22.ts

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//@target: ES6
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interface I<T, U> {
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[Symbol.unscopables](x: T): U;
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}
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declare function foo<T, U>(p1: T, p2: I<T, U>): U;
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foo("", { [Symbol.unscopables]: s => s.length });

‎tests/cases/conformance/es6/Symbols/symbolProperty23.ts

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//@target: ES6
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interface I {
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[Symbol.toPrimitive]: () => boolean;
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}
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class C implements I {
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[Symbol.toPrimitive]() {
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return true;
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty24.ts

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//@target: ES6
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interface I {
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[Symbol.toPrimitive]: () => boolean;
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}
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class C implements I {
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[Symbol.toPrimitive]() {
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return "";
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty25.ts

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//@target: ES6
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interface I {
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[Symbol.toPrimitive]: () => boolean;
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}
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class C implements I {
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[Symbol.toStringTag]() {
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return "";
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty26.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return "";
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}
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}
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class C2 extends C1 {
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[Symbol.toStringTag]() {
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return "";
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty27.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return {};
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}
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}
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class C2 extends C1 {
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[Symbol.toStringTag]() {
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return "";
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty28.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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}
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class C2 extends C1 { }
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var c: C2;
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var obj = c[Symbol.toStringTag]().x;

‎tests/cases/conformance/es6/Symbols/symbolProperty29.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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[s: Symbol]: () => { x: string };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty30.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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[s: Symbol]: () => { x: number };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty31.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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}
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class C2 extends C1 {
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[s: Symbol]: () => { x: string };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty32.ts

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//@target: ES6
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class C1 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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}
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class C2 extends C1 {
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[s: Symbol]: () => { x: number };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty33.ts

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//@target: ES6
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class C1 extends C2 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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}
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class C2 {
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[s: Symbol]: () => { x: string };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty34.ts

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//@target: ES6
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class C1 extends C2 {
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[Symbol.toStringTag]() {
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return { x: "" };
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}
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}
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class C2 {
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[s: Symbol]: () => { x: number };
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty35.ts

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//@target: ES6
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interface I1 {
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[Symbol.toStringTag](): { x: string }
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}
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interface I2 {
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[Symbol.toStringTag](): { x: number }
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}
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interface I3 extends I1, I2 { }

‎tests/cases/conformance/es6/Symbols/symbolProperty36.ts

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//@target: ES6
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var x = {
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[Symbol.isConcatSpreadable]: 0,
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[Symbol.isConcatSpreadable]: 1
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty37.ts

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//@target: ES6
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interface I {
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[Symbol.isConcatSpreadable]: string;
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[Symbol.isConcatSpreadable]: string;
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty38.ts

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//@target: ES6
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interface I {
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[Symbol.isConcatSpreadable]: string;
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}
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interface I {
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[Symbol.isConcatSpreadable]: string;
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty39.ts

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//@target: ES6
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class C {
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[Symbol.iterator](x: string): string;
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[Symbol.iterator](x: number): number;
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[Symbol.iterator](x: any) {
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return undefined;
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}
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[Symbol.iterator](x: any) {
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return undefined;
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}
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}

‎tests/cases/conformance/es6/Symbols/symbolProperty40.ts

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//@target: ES6
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class C {
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[Symbol.iterator](x: string): string;
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[Symbol.iterator](x: number): number;
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[Symbol.iterator](x: any) {
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return undefined;
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}
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}
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var c = new C;
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c[Symbol.iterator]("");
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c[Symbol.iterator](0);

‎tests/cases/conformance/es6/Symbols/symbolProperty41.ts

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//@target: ES6
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class C {
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[Symbol.iterator](x: string): { x: string };
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[Symbol.iterator](x: "hello"): { x: string; hello: string };
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[Symbol.iterator](x: any) {
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return undefined;
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}
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}
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var c = new C;
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c[Symbol.iterator]("");
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c[Symbol.iterator]("hello");

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