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- /**
- * @fileoverview A rule to disallow modifying variables that are declared using `const`
- * @author Toru Nagashima
- */
- "use strict";
- const astUtils = require("./utils/ast-utils");
- //------------------------------------------------------------------------------
- // Rule Definition
- //------------------------------------------------------------------------------
- /** @type {import('../shared/types').Rule} */
- module.exports = {
- meta: {
- type: "problem",
- docs: {
- description: "Disallow reassigning `const` variables",
- recommended: true,
- url: "https://eslint.org/docs/rules/no-const-assign"
- },
- schema: [],
- messages: {
- const: "'{{name}}' is constant."
- }
- },
- 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: "const", data: { name: reference.identifier.name } });
- });
- }
- return {
- VariableDeclaration(node) {
- if (node.kind === "const") {
- context.getDeclaredVariables(node).forEach(checkVariable);
- }
- }
- };
- }
- };
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