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path: add fromURL #44315

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@MoLow MoLow commented Aug 20, 2022

Fixes: #41521

@nodejs-github-bot nodejs-github-bot added needs-ci PRs that need a full CI run. path Issues and PRs related to the path subsystem. labels Aug 20, 2022
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MoLow commented Aug 20, 2022

CC @nodejs/path

@MoLow MoLow force-pushed the add-path-from-url branch 2 times, most recently from 400a742 to 7628fdd Compare August 20, 2022 22:26
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tniessen commented Aug 20, 2022

Is my understanding correct that this API is essentially just typeof arg === 'string' ? arg : url.fileURLToPath(arg)?

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aduh95 reviewed Aug 20, 2022
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Can we add tests for when the passed argument is not a string nor a URL instance?

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MoLow commented Aug 21, 2022

Is my understanding correct that this API is essentially just typeof arg === 'string' ? arg : url.fileURLToPath(arg)?

correct. see #41521 (comment)

@MoLow MoLow force-pushed the add-path-from-url branch from 7628fdd to 430991e Compare August 21, 2022 16:22
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benjamingr commented Aug 21, 2022

cc @sindresorhus

@MoLow MoLow force-pushed the add-path-from-url branch from 430991e to e23b518 Compare August 21, 2022 18:39
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Can you add a test case with the empty string?

tniessen
tniessen reviewed Aug 21, 2022
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@MoLow MoLow force-pushed the add-path-from-url branch from e23b518 to 0841725 Compare August 22, 2022 09:16
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@MoLow MoLow added the commit-queue-squash Add this label to instruct the Commit Queue to squash all the PR commits into the first one. label Aug 23, 2022
@MoLow MoLow requested review from benjamingr and tniessen August 23, 2022 12:47
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I don't have a strong opinion on this PR; this already seems to be a one-liner in userland.

doc/api/path.md
// Returns: 'C:\\path\\dir\\file.txt'
```

## `path.fromURL(pathOrUrl)`
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@tniessen tniessen Aug 23, 2022

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Isn't the name misleading, given that the input is not necessarily a URL? In fact, URL strings of the form file:///home are ignored and not treated as URLs.

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@MoLow MoLow Aug 23, 2022

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what would you consider to be a better name?

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@aduh95 aduh95 Aug 24, 2022

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What about url.toPathIfFileURL?

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Or maybe path.fromURLInstance?

doc/api/path.md
// Returns: 'file:///Users/node/dev'

path.fromURL(new URL('file:///c:/foo.txt'));
// Returns On Windows: 'c:\\foo.txt'
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@tniessen tniessen Aug 23, 2022

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I am still unsure if I like the fact that fromURL(URL) normalizes the path in an OS-specific manner while fromURL(string) does not. I would assume that

path.fromURL(url.pathToFileURL(absolutePath)) === path.fromURL(absolutePath)

but that does not seem to be true in all cases.

On the other hand, this seems to be what @sindresorhus expects.

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I agree this makes more sence:
path.fromURL('file:///Users/node/dev') === '/Users/node/dev' and not 'file:///Users/node/dev'
@sindresorhus WDYT?

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How do you decide if the user refers to a file: URL or to a relative path inside a directory named file:?

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@tniessen tniessen Aug 24, 2022

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I agree this makes more sence:
path.fromURL('file:///Users/node/dev') === '/Users/node/dev' and not 'file:///Users/node/dev'

I think that's orthogonal to my concern regarding OS-specific path normalization, and not what this comment is about.

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I am actually less concerned about that since you can be explicit and use path.win32/path.posix, like we do in our tests

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Again, that's also not what my comment is about. My concern is the fact that fromURL appears to sometimes -- but not always -- normalize the path.

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@tniessen do you think we should change the behavior even if the name of the method is changed to one of the names suggested here (toPathIfFileURL/fromURLInstance)?

lib/path.js
posix: null
};


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@tniessen tniessen Aug 23, 2022

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Nit: unrelated change.

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Just making sure #44315 (comment) is resolved before this can land.

@MoLow MoLow closed this Apr 9, 2023
@MoLow MoLow deleted the add-path-from-url branch April 9, 2023 19:52
@sindresorhus sindresorhus mentioned this pull request Apr 22, 2023
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Dustin4444 commented Mar 21, 2025

Fixes: #41521

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Add a utility to convert file URL or path to one of them?

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@MoLow @tniessen @benjamingr @Dustin4444 @targos @aduh95 @nodejs-github-bot