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bazarr/libs/js2py/es6/__init__.py

41 lines
1.3 KiB
Python

INITIALISED = False
babel = None
babelPresetEs2015 = None
def js6_to_js5(code):
global INITIALISED, babel, babelPresetEs2015
if not INITIALISED:
import signal, warnings, time
warnings.warn(
'\nImporting babel.py for the first time - this can take some time. \nPlease note that currently Javascript 6 in Js2Py is unstable and slow. Use only for tiny scripts!'
)
from .babel import babel as _babel
babel = _babel.Object.babel
babelPresetEs2015 = _babel.Object.babelPresetEs2015
# very weird hack. Somehow this helps babel to initialise properly!
try:
babel.transform('warmup', {'presets': {}})
signal.alarm(2)
def kill_it(a, b):
raise KeyboardInterrupt('Better work next time!')
signal.signal(signal.SIGALRM, kill_it)
babel.transform('stuckInALoop', {
'presets': babelPresetEs2015
}).code
for n in range(3):
time.sleep(1)
except:
print("Initialised babel!")
INITIALISED = True
return babel.transform(code, {'presets': babelPresetEs2015}).code
if __name__ == '__main__':
print(js6_to_js5('obj={}; obj.x = function() {return () => this}'))
print()
print(js6_to_js5('const a = 1;'))