obj-transform

obj-transform

Generates transform functions to apply to each property of an object

Usage

// commonJS...
var transform = require('obj-transform');
// ...or es2015
import transform from 'obj-transform';
 
// an incrementing transformer
const increment = transform(x => x + 1);
// enlarge a rectangle
increment({height: 4, width: 3}); // {height: 5, width: 4}
// move south-east
increment({x: 0, y: 0}); // {x: 1, y: 1}
// looping transform
while (inbounds(ball)) {
  increment(ball);
}  
 
// ad-hoc transform
transform(x => x * x)({a: 1, b: 2, c: 3}); // {a: 1, b: 4, c: 9}
 
// a mixin transformer
var mixin = transform(function(value, key) {return this[key] || value});
mixin({a: 3, b: 9, c: 12}, {a: 1, c: 3}); // { a: 1, b: 9, c: 3 }

Install

npm install obj-transform

API

Creating a transform function

transform(_callback_);

callback is a function that can accept up to three arguments:

value
The value for each property in baseObj
key (optional)
The key for each property in baseObj
baseObj (optional)
The baseObj

Using a transform function

transformFunction(_object_[, _thisValue_]);

Tests

npm test