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x/ramda/hasIn.js

:ram: Practical functional Javascript
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import _curry2 from './internal/_curry2';

/** * Returns whether or not an object or its prototype chain has a property with * the specified name * * @func * @memberOf R * @since v0.7.0 * @category Object * @sig s -> {s: x} -> Boolean * @param {String} prop The name of the property to check for. * @param {Object} obj The object to query. * @return {Boolean} Whether the property exists. * @example * * function Rectangle(width, height) { * this.width = width; * this.height = height; * } * Rectangle.prototype.area = function() { * return this.width * this.height; * }; * * const square = new Rectangle(2, 2); * R.hasIn('width', square); //=> true * R.hasIn('area', square); //=> true */var hasIn = _curry2(function hasIn(prop, obj) { return prop in obj;});export default hasIn;