npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

cond-table

v0.0.5

Published

decision table

Downloads

16

Readme

cond-table

Build Status Coverage Status

NPM

Checks data object against decision table.

-> DMN Notation.

Usage

const Table = require('cond-table').Table;

var testTable = {
    description: 'Applicant Risk rating',   // optional
    hitPolicy: 'First',                     // optional (actual only First possible) 
    input: {
        'age': {
            description: 'Applicant Age',   // optional
            type: 'number'                  // optional
        },
        'hist': {
            description: 'Medical History',
            type: 'string'
        }
    },
    output: {
        'risk': {
            description: 'Risk Rating',     //optional
            type: 'string'                  //optional
        }
    },
    rules: {
        'older 60 / good': {
            'age': '>60',
            'hist': 'good',
            'risk': 'Medium'
        },
        'older 60 / bad': {
            'age': '>60',
            'hist': 'bad',
            'risk': 'High'
        },
        'mid age': {
            'age': '[25..60]',
            'risk': 'Medium'
        },
        'kids / good': {
            'age': '<25',
            'hist': 'good',
            'risk': 'Low'
        },
        'kids / bad)': {
            'age': '<25',
            'hist': 'bad',
            'risk': 'Medium'
        }
    }
};

// example data sets, to be checked  
var testData = [
    { 'age': '65', 'hist':'good'},
    { 'age': '70', 'hist':'bad'},
    { 'age': '26', 'hist':'good'},
    { 'age': '20', 'hist':'bad'},
    { 'age': '10', 'hist':'good'}
];

// create an instance
let table = new Table(testTable);

// use table to process data sets 
for (let i=0; i< testData.length; i++) {
    let result = table.result(testData[i]); // result.risk is set now
    console.log(result.risk);
};

More Examples

Initiate and compile in separate steps

// create an instance direct..
let table = new Table(testTable);

// ...or set and compile separately
let table = new Table();
table.compile(testTable);

Formular expressions in input

let testTable = {
    description: 'Simple table',
    hitPolicy: 'Unique',
    input: {
        'x': {
            description: 'Input x',
            type: 'number'
        },
        'y': {
            description: 'Input y',
            type: 'number',
            default: 2
        },
        'a': {
            description: 'Formula Input',
            type: 'expression',        // optional
            expression: '2 * x + y'    // check expr-eval for syntax
        }
    },
    output: {
        'z': {},
        't': {}
    },
    rules: {
        'First rule': {
            'x': '< 5, [20..30]',
            'y': '> 6,[30..40]',
            'a': '< 15',                // uses the calculated value
            'z': '7',
            't': 'first'
        },
        'Second rule': {
            'x': '> 5',
            'a': '> 15',
            'z': '2',
            't': 'second'
        }
    }
};

Set default values for input (if value is not provided in data sets)

    input: {
        'x': {
            description: 'Input x',
            type: 'number',
            default: '0'                // 0 must be in quotes
        },
        'y': {
            description: 'Input y',
            type: 'number',
            default: 2                  // with or without quotes
        }
    }