いたるところにエラー。
- Error: Permission denied to access property "x"
- InternalError: too much recursion
- RangeError: argument is not a valid code point
- RangeError: invalid array length
- RangeError: precision is out of range
- RangeError: radix must be an integer
- RangeError: repeat count must be less than infinity
- RangeError: repeat count must be non-negative
- SyntaxError: JSON.parse: bad parsing
- SyntaxError: Malformed formal parameter
- SyntaxError: Unexpected token
- TypeError: "x" is read-only
- TypeError: More arguments needed
- TypeError: invalid Array.prototype.sort argument
- Warning: -file- is being assigned a //# sourceMappingURL, but already has one
- Warning: unreachable code after return statement