def eval(self, source):
        if not self.is_available():
            raise execjs.RuntimeUnavailableError
        return self._eval(source)
Retrieve the default configuration.
dataset/ETHPy150Open doloopwhile/PyExecJS/execjs/_abstract_runtime_context.py/AbstractRuntimeContext.eval--crossover with--dataset/ETHPy150Open codeinn/vcs/vcs/backends/git/config.py/StackedConfig.default_backends