This file is indexed.

/usr/lib/nodejs/es5-ext/object/primitive-set.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";

var forEach = Array.prototype.forEach, create = Object.create;

// eslint-disable-next-line no-unused-vars
module.exports = function (arg /*, …args*/) {
	var set = create(null);
	forEach.call(arguments, function (name) {
		set[name] = true;
	});
	return set;
};