Function fromObject

test/babel.js:45980–46007

(that, obj)

	}

	function fromObject(that, obj) {
	  if (Buffer.isBuffer(obj)) {
	    var len = checked(obj.length) | 0;
	    that = createBuffer(that, len);

	    if (that.length === 0) {
	      return that;
	    }

	    obj.copy(that, 0, 0, len);
	    return that;
	  }

	  if (obj) {
	    if (typeof ArrayBuffer !== 'undefined' && obj.buffer instanceof ArrayBuffer || 'length' in obj) {
	      if (typeof obj.length !== 'number' || isnan(obj.length)) {
	        return createBuffer(that, 0);
	      }
	      return fromArrayLike(that, obj);
	    }

	    if (obj.type === 'Buffer' && isArray(obj.data)) {
	      return fromArrayLike(that, obj.data);
	    }
	  }

	  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.');
	}

	function checked(length) {
	  // Note: cannot use `length < kMaxLength()` here because that fails when