6 ms·

Tell HN: Nobody at Facebook has worked on Jest for years

84 points by tmvnty 5y ago

tmvnty 5y ago
Comment: https://github.com/facebook/jest/pull/11529#issuecomment-1027152470 https://github.com/facebook/jest/pull/11529#issuecomment-102...
DylanSp 5y ago
This is really frustrating, if not surprising. Jest generally just works out of the box for me with Typescript (and ts-jest), including coverage, whereas the Mocha ecosystem tends to involve wrangling multiple packages with varying levels of Typescript compatibility. Jest has generally been slower to run, though, and I've noticed various problems over the years that aren't getting solved due to the lack of maintenance.
idontwantthis 5y ago
SimenB reply: https://github.com/facebook/jest/pull/11529#issuecomment-1027405616 https://github.com/facebook/jest/pull/11529#issuecomment-102... tl;dr FB has offered him compensation and he turned it down for personal reasons.
- austhrow743 5y ago
  I don’t think the post you linked to says that. Unless the open collective is a Facebook thing?
- zaphirplane 5y ago
  Not compensation, reimbursement for expenses
- jsmith99 5y ago
  The ESM and other open issues they refer to are serious. Jest often doesn't work at all if you use packages with multiple entry points (like firebase), which is often seen as best practice - it's gotten to the point that people release third party loader packages to make jest work, like https://github.com/k-g-a/jest-node-exports-resolver https://github.com/k-g-a/jest-node-exports-resolver
  - vjeux 5y ago
    In practice the ESM support in Jest is blocked by a v8 dependency and not jest itself at this point. If you are able to nudge this issue that would be fantastic! https://github.com/nodejs/node/issues/37648 https://github.com/nodejs/node/issues/37648
matt7340 5y ago
I’ve been considering switching from karma to jest for our angular project, this certainly brings a new angle to that decision. Frustrating. I guess I get crappy karma “supported” by google, or the much better jest that’s maintained by one person with almost no backing.
- 8n4vidtmkvmk 5y ago
  one person that's burned out and doesn't want to work on it anymore
- skywal_l 5y ago
  But are jest and karma equivalent tools? My understanding is that karma is used to run tests in an headless browser while jest run tests in node.
parthokr 5y ago
"Which unit-testing frameworks / tools do you regularly use?" 42% don't seem to write test for javascript. Source: https://www.jetbrains.com/lp/devecosystem-2021/javascript/ https://www.jetbrains.com/lp/devecosystem-2021/javascript/ I think this is okay with javascript.
- danappelxx 5y ago
  I think this is especially not okay with JavaScript, due to its numerous quirks and type finagling. Typescript, though, perhaps can get away without unit tests for simple stuff.
- systemnate 5y ago
  I don't think this is OK with any language.
tootie 5y ago
I've used this for years and never even knew it came out of Facebook

84 points by tmvnty 5y ago

Comment: https://github.com/facebook/jest/pull/11529#issuecomment-1027152470 https://github.com/facebook/jest/pull/11529#issuecomment-102...

DylanSp 5y ago

This is really frustrating, if not surprising. Jest generally just works out of the box for me with Typescript (and ts-jest), including coverage, whereas the Mocha ecosystem tends to involve wrangling multiple packages with varying levels of Typescript compatibility. Jest has generally been slower to run, though, and I've noticed various problems over the years that aren't getting solved due to the lack of maintenance.

idontwantthis 5y ago

SimenB reply: https://github.com/facebook/jest/pull/11529#issuecomment-1027405616 https://github.com/facebook/jest/pull/11529#issuecomment-102... tl;dr FB has offered him compensation and he turned it down for personal reasons.

austhrow743 5y ago
I don’t think the post you linked to says that. Unless the open collective is a Facebook thing?
zaphirplane 5y ago
Not compensation, reimbursement for expenses
jsmith99 5y ago
The ESM and other open issues they refer to are serious. Jest often doesn't work at all if you use packages with multiple entry points (like firebase), which is often seen as best practice - it's gotten to the point that people release third party loader packages to make jest work, like https://github.com/k-g-a/jest-node-exports-resolver https://github.com/k-g-a/jest-node-exports-resolver
- vjeux 5y ago
  In practice the ESM support in Jest is blocked by a v8 dependency and not jest itself at this point. If you are able to nudge this issue that would be fantastic! https://github.com/nodejs/node/issues/37648 https://github.com/nodejs/node/issues/37648

matt7340 5y ago

I’ve been considering switching from karma to jest for our angular project, this certainly brings a new angle to that decision. Frustrating. I guess I get crappy karma “supported” by google, or the much better jest that’s maintained by one person with almost no backing.

8n4vidtmkvmk 5y ago
one person that's burned out and doesn't want to work on it anymore
skywal_l 5y ago
But are jest and karma equivalent tools? My understanding is that karma is used to run tests in an headless browser while jest run tests in node.

parthokr 5y ago

"Which unit-testing frameworks / tools do you regularly use?" 42% don't seem to write test for javascript. Source: https://www.jetbrains.com/lp/devecosystem-2021/javascript/ https://www.jetbrains.com/lp/devecosystem-2021/javascript/ I think this is okay with javascript.

danappelxx 5y ago
I think this is especially not okay with JavaScript, due to its numerous quirks and type finagling. Typescript, though, perhaps can get away without unit tests for simple stuff.
systemnate 5y ago
I don't think this is OK with any language.

tootie 5y ago

I've used this for years and never even knew it came out of Facebook