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23 lines
527 B
Markdown
23 lines
527 B
Markdown
# is-function
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[](https://ci.testling.com/grncdr/js-is-function)
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Is that thing a function? Use this module to find out.
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## API
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### module.exports = function isFunction(fn) -> Boolean
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Return `true` if `fn` is a function, otherwise `false`.
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## Why not typeof fn === 'function'
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Because certain old browsers misreport the type of `RegExp` objects as functions.
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## Acknowledgements
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I stole this from https://github.com/ljharb/object-keys
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## License
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MIT
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