How to test regex

[kirkstrobeck]

I’m using https://pythex.org with this search = \((.*)\) => { and this string Date.now = () => 1; and it does not match. However, when using that in codemod it is matched. How can I tell codemod to respect the { character.

codemod -m -d lib --extensions js \
    ' = \((.*)\) => {' \
    '(\1) {'