Reported error has no details when script loading fails #42
Description
When loading a script, if the loading fails due to a parse error or some other error, the error output is not detailed enough to determine what is wrong. Here is an example when running Chakra:
Microsoft C++ exception: UnifiedRegex::ParseError at memory location 0x0000005DEC96B6B0.
Microsoft C++ exception: ParseExceptionObject at memory location 0x0000005DEC968ED0.
Uncaught Error: Unknown failure
It is possible to figure out the problem by stopping at the first exception, but it would be much better if the error message included the line number and what failed.