مشاهدة ملف: out-of-bounds.js

import { defError } from "./deferror.js";
export const OutOfBoundsError = defError(() => "index out of bounds");
export const outOfBounds = (index) => {
    throw new OutOfBoundsError(index);
};
/**
 * Throws an {@link OutOfBoundsError} if `index` outside the `[min..max)` range.
 *
 * @param index -
 * @param min -
 * @param max -
 */
export const ensureIndex = (index, min, max) => (index < min || index >= max) && outOfBounds(index);
/**
 * Throws an {@link OutOfBoundsError} if either `x` or `y` is outside their
 * respective `[0..max)` range.
 *
 * @param x -
 * @param y -
 * @param maxX -
 * @param maxY -
 */
export const ensureIndex2 = (x, y, maxX, maxY) => (x < 0 || x >= maxX || y < 0 || y >= maxY) && outOfBounds([x, y]);