@terminus/ngx-tools
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15 lines • 1.7 kB
JavaScript
/**
* Determine if an item is a function
*
* NOTE: While this isn't the fastest performing test in every browser, it is the faster when averaged across the browsers we care about.
*
* @param x - The item to test
* @returns The result
*
* @example
* isFunction(() => {}); // Returns: true
* isFunction('foo'); // Returns: false
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export const isFunction = (x) => !!(x && x.constructor && x.call && x.apply);
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