Head-to-Head: Nightmare vs Slimerjs Analysis

nightmare

v3.0.2(almost 5 years ago)

This package was last published over a year ago. It may not be actively maintained.Types definitions are provided via a separate npm package: @types/nightmareNumber of direct dependencies: 14Monthly npm downloads

Nightmare is a high-level browser automation library for Node.js. It provides a simple and intuitive API for automating tasks in headless browsers, such as clicking elements, filling forms, taking screenshots, and scraping data from websites. Nightmare uses Electron as its underlying browser engine, which allows it to support modern web technologies and render pages with JavaScript.

Alternatives:
puppeteer+
playwright+
cypress+
webdriverio+
testcafe+
selenium-webdriver+
taiko+
protractor+
codeceptjs+
nightwatch+

Tags: javascriptbrowser-automationweb-scrapingheadless-browsertesting

slimerjs

v1.0.0(almost 6 years ago)

This package is deprecated. Consider finding alternatives.Types definitions are provided via a separate npm package: @types/slimerjsNumber of direct dependencies: 0Monthly npm downloads

SlimerJS is a scriptable browser that allows you to control and automate web browsing using JavaScript. It is built on top of the Gecko rendering engine, the same engine used by Firefox. With SlimerJS, you can perform tasks like web scraping, automated testing, and generating screenshots or PDFs of web pages.

Alternatives:
puppeteer+
playwright+
nightmare+
webdriverio+
cypress+
selenium-webdriver+
taiko+
testcafe+
protractor+
casperjs+

Tags: javascriptbrowserautomationweb-scrapingtesting

Fight!

Popularity

Nightmare and SlimerJS are both popular choices for browser automation and testing. However, Nightmare has gained more popularity and has a larger community support compared to SlimerJS.

Browser Support

Nightmare is built on top of Electron, which means it supports Chromium-based browsers like Chrome and Electron itself. SlimerJS, on the other hand, is based on Gecko, the rendering engine used by Firefox. This means SlimerJS is better suited for testing and automation in Firefox-based environments.

Ease of Use

Nightmare provides a high-level API and a fluent interface, making it easy to write expressive and readable code. It also has good documentation and a large number of examples available. SlimerJS, while powerful, has a steeper learning curve and a less intuitive API compared to Nightmare.

Performance

Nightmare is known for its performance and speed, as it leverages the power of Electron. SlimerJS, on the other hand, may have slightly slower execution times due to its reliance on the Gecko engine. However, the performance difference may not be significant for most use cases.

Flexibility

Nightmare provides more flexibility and control over browser automation tasks. It allows you to interact with the page using JavaScript, manipulate DOM elements, take screenshots, and perform various actions. SlimerJS also offers similar capabilities but may have some limitations compared to Nightmare.

Maintenance

Nightmare is actively maintained and has regular updates, ensuring compatibility with the latest versions of Electron and Chromium-based browsers. SlimerJS, on the other hand, has seen less frequent updates and may have compatibility issues with newer versions of Firefox. This could potentially impact long-term maintenance and support.