The angular team designed atscript. Have a look at their doc. It does contain runtime type checking and it looks like this: var length = rtts.type(name.length,

The angular team designed atscript. Have a look at their doc. It does contain runtime type checking and it looks like this: var length = rtts.type(name.length, rtts.int); https://docs.google.com/document/d/11YUzC-1d0V1-Q3V0fQ7KSit97HnZoKVygDxpWzEYW0U/edit https://docs.google.com/document/d/11YUzC-1d0V1-Q3V0fQ7KSit9...