get-nested-value

/**

• @fileoverview
• This package safely returns the value at a requested path inside of
• an object. Best used on unpredictable deeply nested structures. Supports
• arrays as well.
• Install:
• npm install get-nested-value --save

• or

• yarn add get-nested-value
• Example:
• import getNestedValue from 'get-nestedValue';
• getNestedValue('some.path.to.key', object);
• // or
• getNestedValue(['some', 'path', 'to', 'key'], object);
• // dealing with arrays?
• getNestedValue(['some', 'path', 'atIndex', 0, 'key'], object);
• Notes:
• • Returns undefined if path does not exist.
• • Throws an Error if path is not a string or array. */

/**

• @param {array|string} path – e.g ['key1', 0, 'key2'] or a string such as 'key1.0.key2
• @param {object} object
• @returns {*} */ const getNestedValue = (path, object) => { if (!Array.isArray(path) && typeof path !== 'string') { throw Error('The package get-nested-value received a non-contract path. Please provide a string or an array!'); } return (Array.isArray(path) ? path : path.split('.')) .reduce((prev, cur) => (prev && prev[cur] !== undefined ? prev[cur] : undefined), object); };

module.exports = getNestedValue;