@bitblit/ratchet-common/lib/lang/sort-ratchet.js

Common tools for general use

import { RequireRatchet } from './require-ratchet.js';
import { NumberRatchet } from './number-ratchet.js';
export class SortRatchet {
    constructor() { }
    static sortNullToTop(a, b, bothNonNullSort) {
        return SortRatchet.nullSafeSort(a, b, true, bothNonNullSort);
    }
    static sortNullToBottom(a, b, bothNonNullSort) {
        return SortRatchet.nullSafeSort(a, b, false, bothNonNullSort);
    }
    static nullSafeSort(a, b, nullsOnTop, bothNonNullSort) {
        let rval;
        if (RequireRatchet.isNullOrUndefined(a) && RequireRatchet.isNullOrUndefined(b)) {
            rval = 0;
        }
        else if (RequireRatchet.isNullOrUndefined(a)) {
            rval = nullsOnTop ? -Infinity : Infinity;
        }
        else if (RequireRatchet.isNullOrUndefined(b)) {
            rval = nullsOnTop ? Infinity : -Infinity;
        }
        else {
            rval = bothNonNullSort(a, b);
        }
        return rval;
    }
    static sortNumericStringsAsNumbers(a, b, sortNonNumbersToTop) {
        const an = NumberRatchet.safeNumber(a);
        const bn = NumberRatchet.safeNumber(b);
        return SortRatchet.nullSafeSort(an, bn, sortNonNumbersToTop, (ax, bx) => ax - bx);
    }
}
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