#8 Union Type (Advanced Types)

 When we need a value that may be of either types like string or number, then we may use union type.
It can be written as;

function( weight: number | string ){ 
    if(typeof weight === "number"){
        return weight * 2;}
    else{
        return parseInt(weight)*2;}

Here, the weight may either be number or a string. To make the weight act as a number, we use IF where if the (type of weight === number) so that the weight can act as a number ELSE it shall act as a string.

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