export function invert(obj: Record<any, any>): Record<any, any> {
  const newObj = {};
  let key;
  for (key in obj) {
    if (!obj.hasOwnProperty(key)) continue;
    const value = obj[key];
    // @ts-ignore
    newObj[value] = key;
  }
  return newObj;
}

export function uniq<T>(src: T[]): T[] {
  const res = [];
  let i: number;
  for (i = 0; i < src.length; i++) {
    const value = src[i];
    if (res.indexOf(value) < 0) {
      res.push(value);
    }
  }
  return res;
}

export function assign(target: Record<string, any>, src: Record<string, any>): Record<string, any> {
  let key: string;
  for (key in src) {
    if (src.hasOwnProperty(key)) {
      console.debug('rewrite key:', key, ' with value:', src[key]); // DEBUG
      target[key] = src[key];
    }
  }
  return target;
}