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49 lines
1.4 KiB
Plaintext
49 lines
1.4 KiB
Plaintext
# eslint-compat-utils
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***This package is still in the experimental stage.***
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Provides an API for ESLint custom rules that is compatible with the latest ESLint even when using older ESLint.
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## Installation
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```bash
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npm install eslint-compat-utils
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```
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## Usage
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```js
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const { getSourceCode } = require("eslint-compat-utils");
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module.exports = {
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meta: { /* ... */ },
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create(context) {
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const sourceCode = getSourceCode(context)
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return {
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"Program"(node) {
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const scope = sourceCode.getScope(node);
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},
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};
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},
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}
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```
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### API
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#### `getSourceCode(context)`
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Returns an extended instance of `context.sourceCode` or the result of `context.getSourceCode()`. Extended instances can use new APIs such as `getScope(node)` even with old ESLint.
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#### `getCwd(context)`
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Gets the value of `context.cwd`, but for older ESLint it returns the result of `context.getCwd()`.
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Versions older than v6.6.0 return a value from the result of `process.cwd()`.
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#### `getFilename(context)`
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Gets the value of `context.filename`, but for older ESLint it returns the result of `context.getFilename()`.
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#### `getPhysicalFilename(context)`
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Gets the value of `context.physicalFilename`, but for older ESLint it returns the result of `context.getPhysicalFilename()`.
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Versions older than v7.28.0 return a value guessed from the result of `context.getFilename()`, but it may be incorrect.
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