@extra-object/is-entry/index.mjs

Checks if object has an entry.

import id from './_id';
import cmp from './_cmp';
/**
 * Checks if object has an entry.
 * @param x an object
 * @param e entry?
 * @param fc compare function (a, b)
 * @param fm map function (v, k, x)
 */
function isEntry(x, e, fc = null, fm = null) {
    var fc = fc || cmp, fm = fm || id, [k, v] = e;
    return x.hasOwnProperty(k) && fc(fm(x[k], k, x), v) === 0;
}
export default isEntry;
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