--- /dev/null
+'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;
+};