This file is indexed.

/usr/lib/nodejs/es5-ext/safe-to-string.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 isCallable = require("./object/is-callable");

module.exports = function (value) {
	try {
		if (value && isCallable(value.toString)) return value.toString();
		return String(value);
	} catch (e) {
		return "<non-stringifiable value>";
	}
};