+++ /dev/null
-/**
- * @fileoverview Rule to flag assignment of the exception parameter
- * @author Stephen Murray <spmurrayzzz>
- */
-
-"use strict";
-
-const astUtils = require("./utils/ast-utils");
-
-//------------------------------------------------------------------------------
-// Rule Definition
-//------------------------------------------------------------------------------
-
-module.exports = {
- meta: {
- type: "problem",
-
- docs: {
- description: "disallow reassigning exceptions in `catch` clauses",
- category: "Possible Errors",
- recommended: true,
- url: "https://eslint.org/docs/rules/no-ex-assign"
- },
-
- schema: [],
-
- messages: {
- unexpected: "Do not assign to the exception parameter."
- }
- },
-
- create(context) {
-
- /**
- * Finds and reports references that are non initializer and writable.
- * @param {Variable} variable A variable to check.
- * @returns {void}
- */
- function checkVariable(variable) {
- astUtils.getModifyingReferences(variable.references).forEach(reference => {
- context.report({ node: reference.identifier, messageId: "unexpected" });
- });
- }
-
- return {
- CatchClause(node) {
- context.getDeclaredVariables(node).forEach(checkVariable);
- }
- };
-
- }
-};