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Warn on mount when deps are not an array #15018

Merged
merged 3 commits into from
Mar 5, 2019
Merged

Warn on mount when deps are not an array #15018

merged 3 commits into from
Mar 5, 2019

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gaearon
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@gaearon gaearon commented Mar 5, 2019

It's confusing that passing a string argument doesn't warn (since it has length) but eventually can crash (#15016). This adds early validation. I only check on mount to avoid the overhead on updates. If you get it wrong, you'll likely get it wrong on both mounts and updates.

@gaearon gaearon mentioned this pull request Mar 5, 2019
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sizebot commented Mar 5, 2019 •
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Comparing: ff596e3...72b1308

react-dom

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react-art

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react-test-renderer

File Filesize Diff Gzip Diff Prev Size Current Size Prev Gzip Current Gzip ENV
react-test-renderer.development.js +0.1% +0.1% 490.68 KB 491.3 KB 103.96 KB 104.1 KB UMD_DEV
react-test-renderer.production.min.js 0.0% -0.0% 62.92 KB 62.92 KB 19.32 KB 19.32 KB UMD_PROD
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react-reconciler

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react-reconciler-persistent.development.js +0.1% +0.1% 477.91 KB 478.53 KB 99.99 KB 100.13 KB NODE_DEV
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bvaughn
bvaughn approved these changes Mar 5, 2019
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👍

gaearon added 2 commits March 5, 2019 17:15
@gaearon
Check other Hooks
48da01e
@gaearon
I can't figure out how to fix error/warning nesting lint
72b1308 
But it doesn't really matter much because we test other cases in the other test.
@gaearon gaearon removed the CLA Signed label Mar 5, 2019
@gaearon gaearon merged commit fd557d4 into facebook:master Mar 5, 2019
@gaearon gaearon deleted the clearer-warning branch March 5, 2019 17:41
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@bvaughn bvaughn bvaughn approved these changes

@acdlite acdlite Awaiting requested review from acdlite

@sophiebits sophiebits Awaiting requested review from sophiebits

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@gaearon @sizebot @bvaughn @facebook-github-bot