eslint-plugin-lodash/lib/rules/prop-shorthand.js

Lodash specific linting rules for ESLint

/**
 * @fileoverview Rule to check if the property shorthand can be used
 */
'use strict';

/**
 * @fileoverview Rule to check if the property shorthand can be used
 */
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------


module.exports = {
    meta: {
        schema: [{
            enum: ['always', 'never']
        }]
    },

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

        var isCallToLodashMethod = _require.isCallToLodashMethod;
        var getShorthandVisitors = _require.getShorthandVisitors;

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

        var isMemberExpOf = _require2.isMemberExpOf;
        var getValueReturnedInFirstStatement = _require2.getValueReturnedInFirstStatement;
        var getFirstParamName = _require2.getFirstParamName;


        function isExplicitParamFunction(func) {
            return isMemberExpOf(getValueReturnedInFirstStatement(func), getFirstParamName(func), { allowComputed: false });
        }

        function canUseShorthand(iteratee) {
            return isCallToLodashMethod(iteratee, 'property', context) || isExplicitParamFunction(iteratee);
        }

        function usesShorthand(node, iteratee) {
            return iteratee && iteratee.type === 'Literal' && !node.arguments[node.arguments.indexOf(iteratee) + 1];
        }

        return getShorthandVisitors(context, {
            canUseShorthand: canUseShorthand,
            usesShorthand: usesShorthand
        }, {
            always: 'Prefer property shorthand syntax',
            never: 'Do not use property shorthand syntax'
        });
    }
};