/usr/lib/nodejs/strip-indent/index.js is in node-strip-indent 2.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14  | 'use strict';
module.exports = str => {
	const match = str.match(/^[ \t]*(?=\S)/gm);
	if (!match) {
		return str;
	}
	// TODO: use spread operator when targeting Node.js 6
	const indent = Math.min.apply(Math, match.map(x => x.length)); // eslint-disable-line
	const re = new RegExp(`^[ \\t]{${indent}}`, 'gm');
	return indent > 0 ? str.replace(re, '') : str;
};
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