使い方は察して

fastmecab.js

'use strict';

var spawn = require('child_process').spawn;

var MeCab = module.exports = function (mecabPath) {
	this.mecabPath = mecabPath || '/usr/local/bin/mecab';
	this.process = spawn(this.mecabPath);
};

MeCab.prototype.end = function () {
	this.process.kill('SIGINT');
};

MeCab.prototype.parse = function (text, callback) {
	this.process.stdout.on('data', function (data) {
		callback(
			data.toString('utf8').trim().split('\n').map(function (seg) {
				seg = seg.split('\t');
				var word = seg[0];
				if (word == 'EOS') {
					return [word];
				}
				var info = seg[1] || '';
				return [word, info.split(',')];
			})
		);
	});
	this.process.stdin.write(text + '\n');
};