comparison-searching/specification

import {product} from '@set-theory/cartesian-product';

import {ARRAY, LENGTH, DELTA, MIN, MAX} from './defaults.js';
import {
    arrayMaxValue,
    arrayMinValue,
    pos as _pos,
    found as _found,
    arrayValue,
} from './fixtures.js';

const units = function* ({
    array: arrays = ARRAY,
    length: lengths = LENGTH,
    delta: deltas = DELTA,
    min: mins = MIN,
    max: maxs = MAX,
    pos = _pos,
    found = _found,
}) {
    for (const [array, min] of product([arrays, mins])) {
        if (arrayValue(array, min) < arrayMinValue(array)) continue;
        for (const max of maxs) {
            if (arrayValue(array, max) > arrayMaxValue(array)) continue;
            for (const [length, delta] of product([lengths, deltas])) {
                yield {
                    array,
                    length,
                    delta,
                    min,
                    max,
                    pos,
                    found,
                };
            }
        }
    }
};

export default units;