How to instantiate, initialize and populate an array in TypeScript?

Question

I have the following classes in TypeScript:

class bar {     length: number; }  class foo {     bars: bar[] = new Array(); } 

And then I have:

var ham = new foo(); ham.bars = [     new bar() {          // <-- compiler says Expected "]" and Expected ";"         length = 1     } ]; 

Is there a way to do that in TypeScript?

UPDATE

I came up with another solution by having a set method to return itself:

class bar {     length: number;      private ht: number;     height(h: number): bar {         this.ht = h; return this;     }      constructor(len: number) {         this.length = len;     } }  class foo {     bars: bar[] = new Array();     setBars(items: bar[]) {         this.bars = items;         return this;     } } 

so you can initialize it as below:

var ham = new foo(); ham.setBars(     [         new bar(1).height(2),         new bar(3)     ]); 

Answer 1

There isn't a field initialization syntax like that for objects in JavaScript or TypeScript.

Option 1:

class bar {     // Makes a public field called 'length'     constructor(public length: number) { } }  bars = [ new bar(1) ]; 

Option 2:

interface bar {     length: number; }  bars = [ {length: 1} ];