import { cloneDeep, defaults as _defaults, pick } from 'lodash';

function equivalentStrokes (a: number[] | undefined, b: number[] | undefined): boolean {

    if (a === undefined && b === undefined) return true;
    if (a === undefined || b === undefined) return false;
    return a.length === b.length &&
        a.every((value, index) => b[index] === value);

}

function defaults (target: any, source: any, paths: string[]) {
    _defaults(target, pick(cloneDeep(source), paths));
}

export {
    defaults,
    equivalentStrokes
}