1 | /**
|
2 | * @fileoverview A rule to warn against using arrow functions when they could be
|
3 | * confused with comparisions
|
4 | * @author Jxck <https://github.com/Jxck>
|
5 | * @copyright 2015 Luke Karrys. All rights reserved.
|
6 | * The MIT License (MIT)
|
7 |
|
8 | * Copyright (c) 2015 Jxck
|
9 |
|
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
11 | * of this software and associated documentation files (the "Software"), to deal
|
12 | * in the Software without restriction, including without limitation the rights
|
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
14 | * copies of the Software, and to permit persons to whom the Software is
|
15 | * furnished to do so, subject to the following conditions:
|
16 |
|
17 | * The above copyright notice and this permission notice shall be included in all
|
18 | * copies or substantial portions of the Software.
|
19 |
|
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
26 | * SOFTWARE.
|
27 | */
|
28 |
|
29 | ;
|
30 |
|
31 | //------------------------------------------------------------------------------
|
32 | // Helpers
|
33 | //------------------------------------------------------------------------------
|
34 |
|
35 | /**
|
36 | * Checks whether or not a node is a conditional expression.
|
37 | * @param {ASTNode} node - node to test
|
38 | * @returns {boolean} `true` if the node is a conditional expression.
|
39 | */
|
40 | function isConditional(node) {
|
41 | return node.body && node.body.type === "ConditionalExpression";
|
42 | }
|
43 |
|
44 | //------------------------------------------------------------------------------
|
45 | // Rule Definition
|
46 | //------------------------------------------------------------------------------
|
47 |
|
48 | module.exports = function(context) {
|
49 | /**
|
50 | * Reports if an arrow function contains an ambiguous conditional.
|
51 | * @param {ASTNode} node - A node to check and report.
|
52 | * @returns {void}
|
53 | */
|
54 | function checkArrowFunc(node) {
|
55 | if (isConditional(node)) {
|
56 | context.report(node, "Arrow function used ambiguously with a conditional expression.");
|
57 | }
|
58 | }
|
59 |
|
60 | return {
|
61 | "ArrowFunctionExpression": checkArrowFunc
|
62 | };
|
63 | };
|
64 |
|
65 | module.exports.schema = [];
|