Lacona (natural language parser) basic example using ES5

lacona-basic-parsing-es5.js

var lacona = require('lacona');
var laconaPhrase = require('lacona-phrase');
var datetime = require('lacona-phrase-datetime');
var string = require('lacona-phrase-string');
var parser = new lacona.Parser({
	grammar: laconaPhrase.createElement('sequence', {
		children: [
			laconaPhrase.createElement('literal', {
				text: 'remind me to '
			}),
			laconaPhrase.createElement(string.String, {
				id: 'activity'
			}),
			laconaPhrase.createElement('literal', {
				text: ' '
			}),
			laconaPhrase.createElement('choice', {
				id: 'date',
				children: [
					laconaPhrase.createElement(datetime.DateTime, {
						past: false
					}),
					laconaPhrase.createElement(datetime.Range, {
						past: false
					})
				]
			})
		]
	})
});


var _ = require('underscore');

function parse(text) {
	var results = parser.parseArray(text);
	var topResult = _.first(_.sortBy(results, 'score').reverse());
	return topResult ? topResult.result : null;
}

console.log(parse('remind me to exercise well 1pm to 2pm'))
console.log(parse('remind me to exercise well tomorrow 6pm'))

package.json

{
  "name": "lacona_sample",
  "version": "1.0.0",
  "description": "sample",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-runtime": "^6.3.19",
    "lacona": "^0.37.0",
    "lacona-phrase": "^0.9.1",
    "lacona-phrase-datetime": "^0.7.1",
    "lacona-phrase-string": "^0.4.0",
    "underscore": "^1.8.3"
  }
}