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65b0d2316d
Pretty much as per the title, I'd welcome some feedback especially around the array/buffer handling in the two randomFill functions.
55 lines
1.3 KiB
TypeScript
55 lines
1.3 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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const ops = globalThis.Deno.core.ops;
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export default function randomInt(max: number): number;
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export default function randomInt(min: number, max: number): number;
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export default function randomInt(
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max: number,
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cb: (err: Error | null, n?: number) => void,
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): void;
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export default function randomInt(
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min: number,
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max: number,
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cb: (err: Error | null, n?: number) => void,
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): void;
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export default function randomInt(
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max: number,
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min?: ((err: Error | null, n?: number) => void) | number,
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cb?: (err: Error | null, n?: number) => void,
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): number | void {
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if (typeof max === "number" && typeof min === "number") {
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[max, min] = [min, max];
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}
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if (min === undefined) min = 0;
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else if (typeof min === "function") {
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cb = min;
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min = 0;
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}
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if (
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!Number.isSafeInteger(min) ||
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typeof max === "number" && !Number.isSafeInteger(max)
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) {
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throw new Error("max or min is not a Safe Number");
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}
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if (max - min > Math.pow(2, 48)) {
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throw new RangeError("max - min should be less than 2^48!");
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}
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if (min >= max) {
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throw new Error("Min is bigger than Max!");
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}
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min = Math.ceil(min);
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max = Math.floor(max);
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const result = ops.op_node_random_int(min, max);
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if (cb) {
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cb(null, result);
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return;
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}
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return result;
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}
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