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add/change -> touch #1414

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add/change -> touch #1414

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robhogan
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@robhogan robhogan commented Dec 21, 2024

Summary:
When using Sapling in an OSS checkout, Flow does not ignore files under `.hg`, leading to false errors especially in Saplings `origbackups`, which may contain old versions of files out of context.

Changelog: Internal

Test Plan:
## Before
```
yarn flow ls | grep '\.hg'
/Users/robhogan/workspace/metro-sl/.hg/runlog/41hxy19HHF6cGBn491508.json
/Users/robhogan/workspace/metro-sl/.hg/runlog/37Z4u1Env4S8RkEa44097.json
<...>
/Users/robhogan/workspace/metro-sl/.hg/origbackups/packages/metro-file-map/src/watchers/common.js
/Users/robhogan/workspace/metro-sl/.hg/origbackups/packages/metro-file-map/src/watchers/FSEventsWatcher.js
```

```
yarn flow ls | wc -l
   25908
```

## After
```
yarn flow ls | grep '\.hg'
<empty response>
```

```
yarn flow ls | wc -l
   25861
```

Reviewers:

Subscribers:

Tasks:

Tags:
Summary:
Ensure `'add'` and `'change'` events fired by watcher backends always have associated `metadata` (and that `'delete'` events never do), by typing change event payloads as objects with the `event: 'change' | 'add' | 'delete'` as a discriminator.

(This is in preparation for refactoring out the distinction between `'change'` and `'add'` from backends, which means they don't need to track files and can do much less IO)

Changelog: Internal

Differential Revision: D67287046
Summary:

Test Plan:

Reviewers:

Subscribers:

Tasks:

Tags:
@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Dec 21, 2024
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2 participants