THthrownaway954·Dec 4, 2019
These dudes create some awesome stuff.
https://github.com/segmentio/nightmare
In Segmentio/encoding: optimized drop-in replacement for Go's encoding/JSON packagesegmentio
nightmare
HISTORICAL RECORD2014–2019
segmentio / nightmare · Not publicly available
nightmare
Discover this repository through its Hacker News conversations.
21Distinct people
22Mentions
1Explicit recommenders
What to know before exploring
What it is
A public description has not been verified.
Where it is used
No documented product use has been verified yet.
What people are saying
I use nightmarejs https://github.com/segmentio/nightmare which is based on electron; I recommend it if you're on js
mping used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
- metalsmith/metalsmith · linked in 2 of the same discussions
- segmentio/myth · linked in 2 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year22 dated mentions
Observed mentions: 2014-10-07 13:48:04 UTC to 2019-12-04 23:01:19 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 11 | 2 | 9 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
22 sourcesDo you have a more involved example where Ferret really shines, as opposed to a library with a similar API in JS or another common language? I really don't mean to be negative, but I just don't see how Ferret is any easier to use than something like Nightmare[0]. That said, I'm wondering if it's an issue of communication more than anything, so maybe a different example than the one in the readme would help.
[0]: https://github.com/segmentio/nightmare
In Ferret – Declarative web scrapingNightmare.js: A high-level browser automation library based on Electron
4 points · Open discussionVery interesting to see this. I've been running a similar infrastructure rendering sometimes up to 500k pages a day, although often without images. I'm also running on Digital Ocean, but using nightmare.js (https://github.com/segmentio/nightmare), which runs on top of Electron, which in turns runs on top of Chromium.
The CPU and RAM patterns I see are different, with fixed CPU usage at near max and memory oscillating between 65% and 80%. I believe this is due to the different usage pattern, I basically always have at least 20/30 jobs running concurrently on each machine, and they're usually fairly long (up to 10 minutes or so).
Contrary to what you mention, I've never had an issue with pages crashing and bringing the whole browser down. Maybe it has happened, but it's definitely negligible compared to the benefits I get by running say 5 p
Read the rest
ages in parallel. For some tasks I've also had some luck overriding the cross-content policy and using dirty ol' iframes to render multiple webpages in the same session.
I've considered migrating to puppeteer, so it's encouraging to see large scale project sharing their experience with it.
Android device automation tools?
I've been doing some preliminary searching, but have so far come up mostly inconclusive in finding way to automate interaction with android devices.
Coming from browser automation using https://github.com/segmentio/nightmare and an obvious DOM to interface with, I'm not sure how this might work on a real android device, or what tools are available. I do have an understanding of modern android and java development.
In this case, the goal would be to automate opening an arbitrary app already installed on the phone and without source code access, move a cursor or simulate touch events in specific areas, send keys to focused form fields, and ideally waiting for async events—like file upload—to finish.
1 points · Open discussionI use nightmarejs https://github.com/segmentio/nightmare which is based on electron; I recommend it if you're on js
In Ask HN: What are best tools for web scraping?Nightmare: A high-level browser automation library
5 points · Open discussionI used Nightmare (https://github.com/segmentio/nightmare) to automate logging into my 401(k) provider's website and fetching my current balance (no public tickers for the funds). It uploads that number somewhere and then I fetch that somewhere in a Google Sheets spreadsheet where I keep track of my portfolio.
In Ask HN: What non-work task have you automated?Have you seen Nightmare? https://github.com/segmentio/nightmare
In Ask HN: What API do you wish you had while building your product?Unfortunately, headless Chrome is still missing some features and file downloads is one of them.
I believe Nightmare [1] (running on Electron) handles files download, it might be worth looking at it?
[1] https://github.com/segmentio/nightmare
In Running feature specs with Capybara and Chrome headlessYou can. In my experience, there are very few systems as good at producing accurate renders as well as Chrome. There are a few Chrome/webkit based options.
PhantomJS made the process pretty easy, but that's probably not a good option these days as it's on the way out.
NightmareJS is pretty much the same and can do it (though I haven't tested myself) [0]
If you want to get a little deeper you can use CEF (Chromium Embedded Framework [1
]. It basically turns Chrome into a library and there are a bunch of projects that build on top of it (eg Electron, which is what NightmareJS uses underneath).
Here's a project that just uses CEF for converting to PDF [2].
[0] https://github.com/segmentio/nightmare#pdfpath-options
[1] https://bitbucket.org/chromiumembedded/cef/overview
[2] https://github.com/spajak/cef-pdf
In Firefox 56 supports headless mode on WindowsNightmare is great for this: https://github.com/segmentio/nightmare
In Show HN: Timestrap – Self-hosted online time trackingit should be noted that nightmare isn't safe for untrusted websites: https://github.com/segmentio/nightmare/issues/1060
In Chrome 59 has cross-platform headless supportThere is an excellent library called nightmare (based on electron). If you need print-screens you can use xvfb
or wait for this issue: https://github.com/segmentio/nightmare/issues/224
In Chrome 59 has cross-platform headless supportHas anyone used [Nightmare](https://github.com/segmentio/nightmare)? It's built on top of Electron -- the Atom code editor is built on Electron.
In Selenium IDE alternatives for UI regression testingShowing the 15 most recent of 22 sources. Enable JavaScript to search and browse every indexed mention.