objref

Get deep property of an object via a string path

🧭 Table of contents

• ✨ Benefits
• 🎒 Requierments
• 🚀 Quickstart
• 📘 Documentation
• 🆘 Troubleshooting
• 🤝 Contributing
• 🧪 Testing
• ⚖️ License

✨ Benefits

• [x] No loops for dynamic access to deep property values
• [x] Better readability than loops or even multiple brackets

🎒 Requierments

No requierments, just works.

🚀 Quickstart

Install

NodeJS

Install using the terminal:

npm install @danielcobo/objref

Require the module:

const objref = require('@danielcobo/objref');

Note: In case you're wondering, @danielcobo/ is just a namespace scope - an NPM feature. Scopes make it easier to name modules and improve security.

Browser

Declare it as a global variable named objref by including this script before any script you want to use it in:

<script src="https://cdn.jsdelivr.net/npm/@danielcobo/objref@1/dist/iife/objref.min.js"></script>

Or import it as an ECMAScript module:

import * as objref from 'https://cdn.jsdelivr.net/npm/@danielcobo/objref@1/dist/esm/objref.min.js';

Also, feel free to download the file if you prefer not to use jsdelivr. In that case just replace the url with the relative file path.

Example use

//Example object
const a = {
	b : {
		c : {
			d : 1,
			e : 2
		}
	}
}

//Basic example
const d = objRef(a, 'b/c/d'); //d === 1

//We can use a custom separator
const e = objRef(a, 'b-c-e', '-'); // e === 2

//Build an object reference	
let f = objRef(a, 'b/c/f', '/', true);
const abc = objRef(a, 'b/c');
abc.f = 100; //a.b.c.f === 100; 

//Keep in mind abc is an object reference, f is a variable
f = 200 //f === 200; a.b.c.f === 100

//Do not use a trailing separator
const d = objRef(a, 'b/c/d/'); //this will throw an error - Invalid path

For details see documentation below.

📘 Documentation

objref()

Get deep property of an object via a string path

| Name | Type | Default | Description | | ---- | ---- | ------- | ----------- | | obj | Object | | Data object | | path | string | | Reference path | | [separator] | string | '/' | Separator used in path | | [buildPath] | boolean | false | True/false to define undefined object subpaths |

Returns

| Type | Description | | ---- | ----------- | | * | Deep property value |

Source: src/index.js:1

🆘 Troubleshooting

If you run into trouble or have questions just submit an issue.

🤝 Contributing

Anyone can contribute

Contributions come in many shapes and sizes. All are welcome. You can contribute by:

• asking questions
• suggesting features
• sharing this repo with friends
• improving documentation (even fixing typos counts 😉)
• providing tutorials (if you do, please let me know, I would love to read them)
• improving tests
• contributing code (new features, performance boosts, code readability improvements..)

Rules for contributions

General guidelines:

• there are no dumb questions
• be polite and respectful to others
• do good

When coding remember:

• working > maintainability > performance
• best code is no code
• be descriptive when naming
• keep it DRY
• do test

Contribution licence: All contributions are considered to be under same license as this repository.

🧪 Testing

Testing suite: 🃏 Jest | Test command: npm test

Mutation testing suite: 👽 Stryker Mutator | Mutation test command: npm run mutation

If you intend to develop further or contribute code, then please ensure to write and use testing. Strive for 100% code coverage and high mutation scores. Mutation score 100 is great, but it's not always neccessary (if there are valid reasons).

⚖️ License

MIT License