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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { op_node_random_int } from "ext:core/ops";
import { primordials } from "ext:core/mod.js";
const {
Error,
MathCeil,
MathFloor,
MathPow,
NumberIsSafeInteger,
RangeError,
} = primordials;
export default function randomInt(max: number): number;
export default function randomInt(min: number, max: number): number;
export default function randomInt(
max: number,
cb: (err: Error | null, n?: number) => void,
): void;
export default function randomInt(
min: number,
max: number,
cb: (err: Error | null, n?: number) => void,
): void;
export default function randomInt(
max: number,
min?: ((err: Error | null, n?: number) => void) | number,
cb?: (err: Error | null, n?: number) => void,
): number | void {
if (typeof max === "number" && typeof min === "number") {
const temp = max;
max = min;
min = temp;
}
if (min === undefined) min = 0;
else if (typeof min === "function") {
cb = min;
min = 0;
}
if (
!NumberIsSafeInteger(min) ||
typeof max === "number" && !NumberIsSafeInteger(max)
) {
throw new Error("max or min is not a Safe Number");
}
if (max - min > MathPow(2, 48)) {
throw new RangeError("max - min should be less than 2^48!");
}
if (min >= max) {
throw new Error("Min is bigger than Max!");
}
min = MathCeil(min);
max = MathFloor(max);
const result = op_node_random_int(min, max);
if (cb) {
cb(null, result);
return;
}
return result;
}
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