Code coverage report for lib/util/bindSelectors.js

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/**
 * @file 合成`store`选择器
 * @author Leon(leon@outlook.com)
 */
 
var u = require('underscore');
 
var invariant = require('./invariant');
 
/**
 * 将若干个数据选择器绑定到一个`store`上
 *
 * @private
 * @param {*}       selectors 选择器map
 * @param {!Object} store     数据仓库
 * @return {Function}
 */
function bindSelectors(selectors) {
 
    return function (store) {
 
        invariant(store, 'need store');
 
        switch (typeof selectors) {
 
            case 'function':
 
                return selectors(store);
 
            case 'object':
 
                return u
                    .chain(selectors)
                    .pick(u.isFunction)
                    .reduce(
                        function (result, select, name) {
                            result[name] = select(store[name]);
                            return result;
                        },
                        {}
                    )
                    .value();
 
            case 'number': case 'string':
 
                return store[selectors];
 
            case 'boolean':
 
                return selectors ? store : {};
 
            default:
                return {};
 
        }
 
    };
 
 
 
}
 
module.exports = bindSelectors;