Object traversal by path


Given a path, e.g. a.b[2].c.d[1].e, it will navigate down the provided object and return the last value it finds.

You can play with it in a sandbox here

Install

npm install object-traversal-by-path or
yarn add object-traversal-by-path

Usage

``javascript
import { traverse } from 'object-traversal-by-path';

const object = {
a: {
b: {
c: 'hello world!'
}
}
};
const path = 'a.b.c';

const value = traverse(path, object); // value === 'hello world!'
`

This also works with arrays:
`javascript
import { traverse } from 'object-traversal-by-path';

const object = {
a: {
b: [
{ c: 'hello' },
{ c: 'goodbye' }
]
}
};
const path = 'a.b[1].c';

const value = traverse(path, object); // value === 'goodbye'
`

Mutating


You can deeply mutate objects with the mutate function.

`javascript
import { mutate } from 'object-traversal-by-path';

const object = {
a: {
b: [
{ c: 'hello' },
{ c: 'goodbye' }
]
}
};
const path = 'a.b[1].c';

const value = mutate(path, object, () => 'see you soon!');

console.log(value.a.b[1].c); // 'see you soon!'

``