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April 1, 2022 01:11 am GMT
Original Link: https://dev.to/ku6ryo/avoiding-let-in-typescript-4ob4
Avoiding `let` in TypeScript
I sometimes feel I am forced to use let instead of const in TypeScript even I want to use const to prevent reassignments.
When we use if or switch, there are cases that seems we need to use let. However, we do not have to use let actually.
const fruitNum: number = 0 // a number to represent a type of fruitlet fruitName: string = "Unknown"switch(fruitNum) { case 0: fruitName = "Apple" break case 1: fruitName = "Banana" break default: break}Instead of the above code, we may want to use a anonymous function to make fruitName a const.
const fruitNum: number = 0 // a number to represent a type of fruitconst fruitName: string = (() => { switch(fruitNum) { case 0: return "Apple" case 1: return "Banana" default: return "Unknown" }})()Hope this makes your code more cleaner!
Original Link: https://dev.to/ku6ryo/avoiding-let-in-typescript-4ob4
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