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docs: document package.json's "exports" field #7323

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docs: document package.json's "exports" field #7323

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docs: document `package.json`'s `"exports"` field
samualtnorman Mar 29, 2024
7a38e9f
docs: document `package.json`'s `"exports"` fields' conditional exports
samualtnorman Mar 30, 2024
7cb514a
docs: make comment about `package.json` `"exports"` field support mor…
samualtnorman Mar 30, 2024
5be8cc1
docs: add examples for `package.json` `"exports"` field fallbacks
samualtnorman Mar 30, 2024
d3acde9
docs: add link to official Node.js docs on `package.json` `"exports"`…
samualtnorman Mar 30, 2024
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21 changes: 21 additions & 0 deletions docs/lib/content/configuring-npm/package-json.md
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Expand Up @@ -339,6 +339,27 @@ not much else.

If `main` is not set, it defaults to `index.js` in the package's root folder.

### exports

The exports field is an object that maps entry points to modules. It supports wild cards (`*`) and explicit names.

For example, you could have:

```json
{
"exports": {
".": "./index.js",
"./*": "./*.js",
"./*.js": "./*.js",
"./foo": "./path/to/foo.js"
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ideally an example would include "./package.json", so tools can access the package.json file, and would also show multiple examples including conditions, arrays, etc.

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@samualtnorman samualtnorman Mar 30, 2024 •
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thank you for the feedback, I've now documented conditional exports.
I have also documented fallbacks although I have not yet added examples for fallbacks.
is the thing about conditional exports satisfactory (like the video game)?

}
}
```

If someone installed your package with this in your `package.json`, they could `require("my-package")` and it would be mapped to `./node_modules/my-package/index.js` because of `".": "./index.js"`.<br>
If they did `require("my-package/bar")` or `require("my-package/bar.js")`, it would be mapped to `./node_modules/my-package/bar.js` because of the wild cards (`*`).<br>
If they did `require("my-package/foo")` it would be mapped to `./node_modules/my-package/path/to/foo.js` because of the explicit mapping `"./foo": "./path/to/foo.js"`.<br>

### browser

If your module is meant to be used client-side the browser field should be
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