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x/ramda/source/modify.js

:ram: Practical functional Javascript
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import _curry3 from './internal/_curry3.js';import modifyPath from './modifyPath.js';

/** * Creates a copy of the passed object by applying an `fn` function to the given `prop` property. * * The function will not be invoked, and the object will not change * if its corresponding property does not exist in the object. * All non-primitive properties are copied to the new object by reference. * * @func * @memberOf R * @category Object * @sig Idx -> (v -> v) -> {k: v} -> {k: v} * @param {String|Number} prop The property to be modified. * @param {Function} fn The function to apply to the property. * @param {Object} object The object to be transformed. * @return {Object} The transformed object. * @example * * const person = {name: 'James', age: 20, pets: ['dog', 'cat']}; * R.modify('age', R.add(1), person); //=> {name: 'James', age: 21, pets: ['dog', 'cat']} * R.modify('pets', R.append('turtle'), person); //=> {name: 'James', age: 20, pets: ['dog', 'cat', 'turtle']} */var modify = _curry3(function modify(prop, fn, object) { return modifyPath([prop], fn, object); });export default modify;