!! in typescript code example
Example 1: typescript integer
// There is no int type, use number
const myInt: number = 17;
const myDecimal: number = 17.5;
Example 2: how to declare a boolean in typescript
let isDone: boolean = false;
Example 3: ?. in typescript
?. in typescript
Example 4: angular type of string
if(typeof myVariable === 'string'){
//do
}