lib/extension.js
function removeExtensionDir(done) {
            if (!self.dir) return done(null);

            rimraf(self.dir, done);
        }
function removeExtensionDir(done) {
            if (!self.dir) return done(null);

            rimraf(self.dir, done);
        }
function removeExtensionDir ( done ) { if ( ! self . dir ) return done ( null ) ; rimraf ( self . dir , done ) ; }
remove extension files
remove extension files