For either case:  document.getElementById('body'); // or window.document.getElementById('body');   I get error TS2304: Cannot find name 'window'.  Am I missing something in tsconfig.json for a definition file I should install?...
Hi i am trying to find the sum of Boolean values in the object array in JavaScript   My json like be   var myoBj = [{   "id": 1,   "day": 1,   "status": true }, {   "id": 2,   "day": 1,   "status": fals...
I have written a jQuery plugin where I use jQuery's internal _data method. Which leads to the above compiler error.  (function ($) {       var evts = $._data(document, 'events'); // internal method ....   Can I supress this error and how?...
I'm getting crazy trying to inject request custom header (something like 'AUTH-TOKEN':'SomeToken123') to an  on Angular 4.  I need to pass to the iframe page some required custom header parameters.  Anyone can please help me?  foo...
I'm new to TypeScript.  How come I get this error message?  I don't intend to initialize abstract class.  I intend to initialize a concrete class that is IsEmptyValidator in validatorMap dictionary.     TS2511: Cannot create an instance of th...
I have a situation where I need to call an async method on the result of an async method.   class Parent {   constructor(private child: Child) { }    private getChild(): Promise<Child> {     return Promise.resolve(this.child);   }    async getR...
Say we have a function that accepts a variable number of arguments, I believe it's called variadic function.  Something like this:  function foo(){  let args = Array.from(arguments).map(v => whatever);   // do something with args }   A TypeScr...
I have created a simple Angular 4/Typescript v2.1.6 application. I am trying to use the googlemaps typescript definition (.d.ts file) as specified at https://www.npmjs.com/package/@types/googlemaps  I ran the command  npm install --save @types/google...
I am trying to use Mongoose together with TypeScript.  With JavaScript alone, we can pretty easily write the schema for a model Foo.  const fooSchema = new mongoose.Schema({   name: String,   value: Number });  fooSchema.methods.someInstanceMethod =...

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