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object-lib
Advanced tools
$ npm install --save-dev object-lib
For more extensive examples, please refer to the tests.
Align the ordering of one object recursively to a reference object.
Example:
const { align } = require('object-lib');
const obj = { k1: 1, k2: 2 };
const ref = { k2: null, k1: null };
align(obj, ref);
// obj => { k2: 1, k1: 2 }
Deep clone object.
Fields targeted by passed needles are created as a reference and not cloned.
Fields targeted by excluded needles are removed entirely from the result.
Needles are declared using the object-scan syntax.
Example:
const { clone } = require('object-lib');
const data = { a: {}, b: {}, c: {} };
const cloned = clone(data, ['b', '!c']);
console.log(cloned);
// => { a: {}, b: {} }
console.log(cloned.a !== data.a);
// => true
console.log(cloned.b === data.b);
// => true
Check if subtree
is contained in tree
recursively.
Different types are never considered contained.
Arrays are contained iff they are the same length and every element is contained in the corresponding element.
Objects are contained if the keys are a subset, and the respective values are contained.
All other types are contained if they match exactly (===
).
Example:
const { contains } = require('object-lib');
contains({ a: [1, 2], b: 'c' }, { a: [1, 2] });
// => true
contains({ a: [1, 2], b: 'c' }, { a: [1] });
// => false
Allows merging of objects. The logic defines paths that map to a field, or a function, to merge by.
If a function is passed, it is invoked with the value, and the result is used as the merge identifier.
The paths are defined using object-scan syntax.
Example:
const { Merge } = require('object-lib');
Merge()(
{ children: [{ id: 1 }, { id: 2 }] },
{ children: [{ id: 2 }, { id: 3 }] }
);
// => { children: [ { id: 1 }, { id: 2 }, { id: 2 }, { id: 3 } ] }
Merge({ '**[*]': 'id' })(
{ children: [{ id: 1 }, { id: 2 }] },
{ children: [{ id: 2 }, { id: 3 }] }
);
// => { children: [ { id: 1 }, { id: 2 }, { id: 3 } ] }
FAQs
Various object utility functions
The npm package object-lib receives a total of 541 weekly downloads. As such, object-lib popularity was classified as not popular.
We found that object-lib demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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