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Check if a value is a function
Downloads
333,117
sindresorhusCheck if a value is a function
In Node.js, just use typeof fn which works exactly the same. This module can be useful in the browser where typeof fn has a myriad of bugs.
$ npm install is-fnimport isFunction from 'is-fn';
isFunction(() => {});
//=> true
isFunction('unicorn');
//=> false