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15 lines
308 B
JavaScript
15 lines
308 B
JavaScript
/**
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* Check if `fn` is a function.
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*
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* @param {Function} fn
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* @return {Boolean}
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* @api private
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*/
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var isObject = require('./is-object');
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function isFunction(fn) {
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var tag = isObject(fn) ? Object.prototype.toString.call(fn) : '';
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return tag === '[object Function]';
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}
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module.exports = isFunction;
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