'use strict'; var isWhitespace = require('is-whitespace'); module.exports = function(str) { if (typeof str !== 'string') { throw new TypeError('expected a string'); } if (!str) return str; var lines = str.split('\n'); if (lines.length === 1) { return str; } var start = 0; for (var i = 0; i < lines.length; i++) { var line = lines[i]; if (isWhitespace(line) || line === '') { continue; } start = i; break; } return lines.slice(start).join('\n'); };