//// [superCallParameterContextualTyping1.ts] class A { constructor(private map: (value: T1) => T2) { } } class B extends A { // Ensure 'value' is of type 'number (and not '{}') by using its 'toExponential()' method. constructor() { super(value => String(value.toExponential())); } } //// [superCallParameterContextualTyping1.js] var __extends = (this && this.__extends) || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; var A = (function () { function A(map) { this.map = map; } return A; })(); var B = (function (_super) { __extends(B, _super); // Ensure 'value' is of type 'number (and not '{}') by using its 'toExponential()' method. function B() { _super.call(this, function (value) { return String(value.toExponential()); }); } return B; })(A);