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'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 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 =...
I have an items array like :-  this.itemList = [   { id: 1, name: 'a', address: 'as dasf a' },   { id: 2, name: 'b', address: 'as dasf a' },   { id: 3, name: 'c', address: 'as dasf a' } ];   one headers...
I'm trying to create a JSON Helper class by calling method in top of another. i.e. second method take result from first method and process it. Also first method should give Class Object. If possible direct result.  Expected api and result from th...

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