//// [emitArrowFunctionThisCapturingES6.ts] var f1 = () => { this.age = 10 }; var f2 = (x: string) => { this.name = x } function foo(func: () => boolean){ } foo(() => { this.age = 100; return true; }); //// [emitArrowFunctionThisCapturingES6.js] var f1 = () => { this.age = 10; }; var f2 = (x) => { this.name = x; }; function foo(func) { } foo(() => { this.age = 100; return true; });