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54 lines
1.5 KiB
54 lines
1.5 KiB
# ESLint Scope |
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ESLint Scope is the [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) scope analyzer used in ESLint. It is a fork of [escope](http://github.com/estools/escope). |
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## Usage |
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Install: |
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``` |
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npm i eslint-scope --save |
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``` |
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Example: |
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```js |
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var eslintScope = require('eslint-scope'); |
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var espree = require('espree'); |
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var estraverse = require('estraverse'); |
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var ast = espree.parse(code); |
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var scopeManager = eslintScope.analyze(ast); |
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var currentScope = scopeManager.acquire(ast); // global scope |
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estraverse.traverse(ast, { |
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enter: function(node, parent) { |
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// do stuff |
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if (/Function/.test(node.type)) { |
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currentScope = scopeManager.acquire(node); // get current function scope |
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} |
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}, |
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leave: function(node, parent) { |
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if (/Function/.test(node.type)) { |
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currentScope = currentScope.upper; // set to parent scope |
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} |
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// do stuff |
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} |
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}); |
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``` |
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## Contributing |
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Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/eslint-scope/issues). |
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## Build Commands |
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* `npm test` - run all linting and tests |
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* `npm run lint` - run all linting |
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## License |
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ESLint Scope is licensed under a permissive BSD 2-clause license.
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