1 | /**
|
2 | * @fileoverview A rule to disallow modifying variables of class declarations
|
3 | * @author Toru Nagashima
|
4 | */
|
5 |
|
6 | ;
|
7 |
|
8 | const astUtils = require("../ast-utils");
|
9 |
|
10 | //------------------------------------------------------------------------------
|
11 | // Rule Definition
|
12 | //------------------------------------------------------------------------------
|
13 |
|
14 | module.exports = {
|
15 | meta: {
|
16 | docs: {
|
17 | description: "disallow reassigning class members",
|
18 | category: "ECMAScript 6",
|
19 | recommended: true
|
20 | },
|
21 |
|
22 | schema: []
|
23 | },
|
24 |
|
25 | create(context) {
|
26 |
|
27 | /**
|
28 | * Finds and reports references that are non initializer and writable.
|
29 | * @param {Variable} variable - A variable to check.
|
30 | * @returns {void}
|
31 | */
|
32 | function checkVariable(variable) {
|
33 | astUtils.getModifyingReferences(variable.references).forEach(reference => {
|
34 | context.report({ node: reference.identifier, message: "'{{name}}' is a class.", data: { name: reference.identifier.name } });
|
35 |
|
36 | });
|
37 | }
|
38 |
|
39 | /**
|
40 | * Finds and reports references that are non initializer and writable.
|
41 | * @param {ASTNode} node - A ClassDeclaration/ClassExpression node to check.
|
42 | * @returns {void}
|
43 | */
|
44 | function checkForClass(node) {
|
45 | context.getDeclaredVariables(node).forEach(checkVariable);
|
46 | }
|
47 |
|
48 | return {
|
49 | ClassDeclaration: checkForClass,
|
50 | ClassExpression: checkForClass
|
51 | };
|
52 |
|
53 | }
|
54 | };
|