import regex
import base64
import js2py
from typing import Any
# Thanks to http://regex.inginf.units.it/
arrowexp = regex.compile(r'\w[^\}]*+')
def to_ecma5_function(f:str) -> str:
match = arrowexp.search(f)
conv = '(function(){' + match.group(0) + '})()'
return regex.sub(
r'(?:s|\(s\)) => s.split\([\'"]{2}\).reverse\(\).join\([\'"]{2}\)',
'function(s){return s.split(\'\').reverse().join(\'\')}',
conv
)
def atob(s:str) -> str:
return base64.standard_b64decode(str(s)).decode('utf-8')
def exec(f:str) -> Any:
ctx = js2py.EvalJs({'atob': atob})
ctx.execute(to_ecma5_function(f))
return ctx
