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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def input(self, **kwargs):
 """ Specify temporary input file extension. Browserify requires explicit file extension (".js" or ".json" by default). https://github.com/substack/node-browserify/issues/1469 """

        if self.infile is None and "{infile}" in self.command:
            if self.filename is None:
                self.infile = NamedTemporaryFile(mode='wb', suffix=self.infile_ext)
                self.infile.write(self.content.encode(self.default_encoding))
                self.infile.flush()
                self.options += (
                    ('infile', self.infile.name),
                )
        return super(BaseCompiler, self).input(**kwargs)