as type typescript code example

Example 1: use type as value typescript

Typescript interfaces aren''t being compiled into the js output, and you can not use them at runtime

Example 2: type gurad

1) Type guards narrow down the type of a variable within a conditional block.
2) Use the 'typeof' and 'instanceof operators to implement type guards in the
	conditional blocks.
   
//example(typeof)
if (typeof a === 'number' && typeof b === 'number') {
    return a + b;
}

(instanceof)
if (job instanceof detail){
	jobless = false ;
}