//// [computedPropertyNames1_ES5.ts] var v = { get [0 + 1]() { return 0 }, set [0 + 1](v: string) { } //No error } //// [computedPropertyNames1_ES5.js] var v = (_a = {}, Object.defineProperty(_a, 0 + 1, { get: function () { return 0; }, enumerable: true, configurable: true }), Object.defineProperty(_a, 0 + 1, { set: function (v) { } //No error , enumerable: true, configurable: true }), _a ); var _a;