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const proto = Object.prototype as any;// These are non-standard but offer a more reliable prototype based// lookup for propertiesconst hasProtoDefinitions = typeof proto.__lookupGetter__ === 'function' &&  typeof proto.__defineGetter__ === 'function' &&  typeof proto.__defineSetter__ === 'function';
export function copyToSelf (target: any) {  // tslint:disable-next-line  for (const key in target) {    if (!target.hasOwnProperty(key)) {      const getter = hasProtoDefinitions ? target.constructor.prototype.__lookupGetter__(key)        : Object.getOwnPropertyDescriptor(target, key);
      if (hasProtoDefinitions && getter) {        target.__defineGetter__(key, getter);
        const setter = target.constructor.prototype.__lookupSetter__(key);
        if (setter) {          target.__defineSetter__(key, setter);        }      } else if (getter) {        Object.defineProperty(target, key, getter);      } else {        target[key] = target[key];      }    }  }}
export function copyProperties <F> (target: F, ...originals: any[]) {  for (const original of originals) {    const originalProps = (Object.keys(original) as any)        .concat(Object.getOwnPropertySymbols(original));
    for (const prop of originalProps) {      const propDescriptor = Object.getOwnPropertyDescriptor(original, prop);
      if (propDescriptor && !Object.prototype.hasOwnProperty.call(target, prop)) {        Object.defineProperty(target, prop, propDescriptor);      }    }  }
  return target;}
export function copyFnProperties <F> (target: F, original : any) {  const internalProps = ['name', 'length'];
  try {    for (const prop of internalProps) {      const value = original[prop];
      Object.defineProperty(target, prop, { value });    }  } catch (e) {    // Avoid IE error  }
  return target;}