22 lines
543 B
Markdown
22 lines
543 B
Markdown
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# @babel/helper-get-function-arity
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Function that returns the number of arguments that a function takes.
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* Examples of what is considered an argument can be found at [MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length)
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## Usage
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```javascript
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import getFunctionArity from "@babel/helper-get-function-arity";
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function wrap(state, method, id, scope) {
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// ...
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if (!t.isFunction(method)) {
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return false;
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}
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const argumentsLength = getFunctionArity(method);
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// ...
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}
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```
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