SyntaxError when filename has invalid variable characters (&)

[christopher-gibson]

🐛 Bug Report

When a filename has a character that is invalid in variable names, it causes a syntax error.

To Reproduce

Add an ampersand (&) to a filename.

Expected behavior

Any invalid characters should be stripped (or replaced) when generating component names.

[gregberge]

Hello @christopher-gibson, could you submit a PR to fix it? The problem is in the function that transforms filename into component name.