Function loop

tools/release-screenshots.js:86–102

()

            });

            let loop = function() {
                if (i < len) {
                    document(THEMES[i])
                        .then(function() {
                            i++;
                            loop();
                        })
                        .catch(error => {
                            console.log('document error: ', error);
                        });
                } else {
                    console.log('END');
                    liveServer.shutdown();
                    process.exit(0);
                    rimraf(tmp.name);
                }
            };
            loop();
        }
    }