eslint-plugin-lodash/lib/rules/prefer-invoke-map.js

Lodash specific linting rules for ESLint

/**
 * @fileoverview Rule to check if a call to map should be a call to invokeMap
 */
'use strict';

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------

module.exports = {
    meta: {
        docs: {}
    },

    create: function create(context) {
        var _require = require('../util/lodashUtil');

        var getLodashMethodVisitors = _require.getLodashMethodVisitors;

        var _require2 = require('../util/astUtil');

        var isCallFromObject = _require2.isCallFromObject;
        var getValueReturnedInFirstStatement = _require2.getValueReturnedInFirstStatement;
        var getFirstParamName = _require2.getFirstParamName;

        var _require3 = require('../util/methodDataUtil');

        var isAliasOfMethod = _require3.isAliasOfMethod;


        function isFunctionMethodCallOfParam(func) {
            var firstParamName = getFirstParamName(func);
            return firstParamName && isCallFromObject(getValueReturnedInFirstStatement(func), firstParamName);
        }

        return getLodashMethodVisitors(context, function (node, iteratee, _ref) {
            var method = _ref.method;
            var version = _ref.version;

            if (isAliasOfMethod(version, 'map', method) && isFunctionMethodCallOfParam(iteratee)) {
                context.report(node, 'Prefer _.invokeMap over map to a method call.');
            }
        });
    }
};