README
objref
Get deep property of an object via a string path
๐งญ Table of contents
- โจ Benefits
- ๐ Requierments
- ๐ Quickstart
- ๐ Documentation
- ๐ Troubleshooting
- ๐ค Contributing
- ๐งช Testing
- โ๏ธ License
โจ Benefits
- No loops for dynamic access to deep property values
- Better readability than loops or even multiple brackets
๐ Requierments
No requierments, just works.
๐ 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.
๐ 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
๐ Troubleshooting
If you run into trouble or have questions just submit an issue.
๐ค 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 ๐)
- 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.
๐งช Testing
Testing suite: ๐ Jest | Test command: npm test
Mutation testing suite: ๐ฝ 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).