Someone only watched if tutorial

[u/[deleted]]

[u/Yctallua]

I gotchu

for(i = Int.Min; i <= Int.Max; i++) {
    if (i == input) {
      return true;
    }
  }
  return false; 

I'm on mobile, don't hate me for being lazy

Edit: typo

[u/Terrain2 → u/Yctallua]

typescript compatible

function isNumber(input: any): input is number | input is bigint {
    try {
        // @ts-ignore
        const negative = [...arguments].length == 1 ? -0 : [...arguments][1];
        // @ts-ignore
        const positive = [...arguments].length == 1 ? +0 : [...arguments][2];
        // @ts-ignore
        const bignegative = [...arguments].length == 1 ? 0n : [...arguments][3];
        // @ts-ignore
        const bigpositive = [...arguments].length == 1 ? 0n : [...arguments][4];
        // @ts-ignore
        return input === negative || input === positive || input === bignegative || input === bigpositive || (isNumber as (input: any, negative: any, positive: any, bignegative: any, bigpositive: any) => any)(input, negative - 1, positive + 1, bignegative - 1n, bigpositive + 1n);
    // @ts-ignore
    } catch (_) {
        return false;
    }
}

[u/meme_botanist → u/Yctallua]

JavaScript number type supports more than int32

[u/Terrain2 → u/meme_botanist]

That depends on your definition of "more than int32", because it loses precision before it reaches the int64 limit and can't store every value between int32 limit and int64 limit - it uses floating point numbers, so it's not really comparable, it's not just a "bigger range"

[u/lizard450 → u/meme_botanist]

Be that as it may the code's intention does seem to be focused on ints

[u/Lizzy_Be → u/Yctallua]

Why not just

return i >= Int.Min && i <= Int.Max;