* direct execution comment accidental removal
* zip type check in 'traverse'
* less convoluted 'variables' in JSInterpreter initialization
* tiny bit more meaningful log messages
* changing single letter flags to more explanatory names
* refactoring skip test logic
- Fixing test_jsinterp_parse test_empty_return
- Fixing test_call and test_complex_call not testing statements (ast still needed)
- Adding class Reference and Context to jsinterp
- Fixing JSInterpreter interpret_statement and interpret_expression
In pycodestyle 2.1.0, E305 was introduced, which requires two blank
lines after top level declarations, too.
See https://github.com/PyCQA/pycodestyle/issues/400
See also #10689; thanks @stepshal for first mentioning this issue and
initial patches
We need a proper lexer to be able to understand YouTube's code, which contains /* inside of strings.
For now it's sufficient to just disable comment support altogether.
Fixes#4976, fixes#4979, fixes#4980, fixes#4981, fixes#4982.
Closes#4977.
