56 lines
1.4 KiB
Markdown
56 lines
1.4 KiB
Markdown
# module-definition [](https://npmjs.org/package/module-definition) [](https://npmjs.org/package/module-definition)
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Determines the module definition type (CommonJS, AMD, ES6, or none) for a given JavaScript file
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by walking through the AST.
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`npm install module-definition`
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### Usage
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```javascript
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var getModuleType = require('module-definition');
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// Async
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getModuleType('myscript.js', function (err, type) {
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console.log(type);
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});
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// Sync
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var type = getModuleType.sync('myscript.js');
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console.log(type);
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// From source (string or an AST)
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var type = getModuleType.fromSource('define({foo: "foo"});');
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console.log(type);
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```
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Passes one of the following strings to the given callback or returns the string in sync api:
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* amd
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* commonjs
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* es6
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* none
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* You may also pass an AST to `fromSource` to avoid an internal parsing of the source
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When specifying a filename, using the sync or async api, you can also provide an `options` object with an alternative `fs` implementation used to read the source file with.
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```javascript
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var myFs = GetFs();
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var options = {fileSystem: myFs}
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// Async
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getModuleType('myscript.js', function (err, type) {
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console.log(type);
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}, options);
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// Sync
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var type = getModuleType.sync('myscript.js', options);
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```
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Via shell command (requires a global install: `npm install -g module-definition`)
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```
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module-definition filename
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```
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