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Acid Coder
Acid Coder

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Typescript Numeric Literal Types How To Y / X (Division)

In the last post we know multiplication is possible

In this post we are going to try division

type CreateArrayWithLengthX<
    LENGTH extends number,
    ACC extends unknown[] = [],
> = ACC['length'] extends LENGTH
    ? ACC
    : CreateArrayWithLengthX<LENGTH, [...ACC,1]>

type Division<Dividend extends number, Divisor extends number, ACC extends unknown[] = [], Counter extends unknown[] = []> = 
    [...ACC,...CreateArrayWithLengthX<Divisor>]['length'] extends [...CreateArrayWithLengthX<Dividend>]['length'] 
    ? [1,...Counter]['length'] 
    : Division<Dividend, Divisor, [...ACC,...CreateArrayWithLengthX<Divisor>],[1,...Counter]>

type result = Division<999, 3> // 333
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playground

limitation: the dividend cannot exceed 999 because the max depth of TS recursion is only 1000, only work with positive integer. the divisor must be factors of the dividend

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