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2 years ago
var isCallable = require('../internals/is-callable');
var tryToString = require('../internals/try-to-string');
var $TypeError = TypeError;
// `Assert: IsCallable(argument) is true`
module.exports = function (argument) {
if (isCallable(argument)) return argument;
throw $TypeError(tryToString(argument) + ' is not a function');
};