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81 lines
2.6 KiB
Markdown
81 lines
2.6 KiB
Markdown
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# import/no-restricted-paths: Restrict which files can be imported in a given folder
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Some projects contain files which are not always meant to be executed in the same environment.
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For example consider a web application that contains specific code for the server and some specific code for the browser/client. In this case you don’t want to import server-only files in your client code.
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In order to prevent such scenarios this rule allows you to define restricted zones where you can forbid files from imported if they match a specific path.
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## Rule Details
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This rule has one option. The option is an object containing the definition of all restricted `zones` and the optional `basePath` which is used to resolve relative paths within.
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The default value for `basePath` is the current working directory.
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Each zone consists of the `target` path and a `from` path. The `target` is the path where the restricted imports should be applied. The `from` path defines the folder that is not allowed to be used in an import. An optional `except` may be defined for a zone, allowing exception paths that would otherwise violate the related `from`. Note that `except` is relative to `from` and cannot backtrack to a parent directory.
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You may also specify an optional `message` for a zone, which will be displayed in case of the rule violation.
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### Examples
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Given the following folder structure:
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```
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my-project
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├── client
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│ └── foo.js
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│ └── baz.js
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└── server
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└── bar.js
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```
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and the current file being linted is `my-project/client/foo.js`.
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The following patterns are considered problems when configuration set to `{ "zones": [ { "target": "./client", "from": "./server" } ] }`:
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```js
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import bar from '../server/bar';
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```
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The following patterns are not considered problems when configuration set to `{ "zones": [ { "target": "./client", "from": "./server" } ] }`:
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```js
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import baz from '../client/baz';
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```
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---------------
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Given the following folder structure:
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```
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my-project
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├── client
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│ └── foo.js
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│ └── baz.js
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└── server
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├── one
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│ └── a.js
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│ └── b.js
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└── two
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```
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and the current file being linted is `my-project/server/one/a.js`.
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and the current configuration is set to:
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```
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{ "zones": [ {
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"target": "./tests/files/restricted-paths/server/one",
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"from": "./tests/files/restricted-paths/server",
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"except": ["./one"]
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} ] }
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```
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The following pattern is considered a problem:
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```js
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import a from '../two/a'
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```
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The following pattern is not considered a problem:
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```js
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import b from './b'
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```
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