This file is indexed.

/usr/lib/nodejs/es5-ext/object/valid-callable.js is in node-es5-ext 0.10.30-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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"use strict";

module.exports = function (fn) {
	if (typeof fn !== "function") throw new TypeError(fn + " is not a function");
	return fn;
};