create-accessor

Creates accessor functions to access deeply nested objects without checking for undefined at every step.

Installation

Via npm:

$ npm install --save create-accessor

Usage

import createAccessor from 'create-accessor';

// Access object paths with "." delimiter:
const obj = { a: { b: { c: 10 } } };
console.log(createAccessor('a.b.c', obj)); // => 10

// Also works on nested arrays:
const obj = { a: [{ b: [{ c: 10 }] }] };
console.log(createAccessor('a.0.b.0.c', obj)); // => 10

// And supports currying (passing in the object later):
const obj = { a: { b: { c: 10 } } };
const read = createAccessor('a.b.c');
console.log(read(obj)); // => 10

// And if the path doesn't exist, it doesn't attempt to read nested undefineds:
const obj = { a: {} };
const read = createAccessor('a.b.c');
console.log(read(obj)); // => undefined

API

createAccessor(path, object)

Reads the provided path on the input object, delimited with the "." character.

createAccessor(path)

Returns a curried version of the above; i.e., create the function first and pass in the object later.