@gravity-ui/graph/build/lib/utils.js

Modern graph editor component

export function assign(target, source) {
    const props = Object.keys(source);
    let prop;
    for (let i = 0; i < props.length; i += 1) {
        prop = props[i];
        target[prop] = source[prop];
    }
    return target;
}
export function cache(fn) {
    let result;
    let touched = true;
    return {
        get: () => {
            if (touched) {
                result = fn();
                touched = false;
            }
            return result;
        },
        reset() {
            touched = true;
        },
        clear() {
            touched = true;
            result = undefined;
        },
    };
}