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42 lines
1.1 KiB
42 lines
1.1 KiB
9 years ago
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/**
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* @fileoverview A rule to disallow modifying variables that are declared using `const`
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* @author Toru Nagashima
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* @copyright 2015 Toru Nagashima. All rights reserved.
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*/
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"use strict";
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var astUtils = require("../ast-utils");
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = function(context) {
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/**
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* Finds and reports references that are non initializer and writable.
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* @param {Variable} variable - A variable to check.
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* @returns {void}
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*/
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function checkVariable(variable) {
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astUtils.getModifyingReferences(variable.references).forEach(function(reference) {
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context.report(
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reference.identifier,
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"`{{name}}` is constant.",
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{name: reference.identifier.name});
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});
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}
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return {
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"VariableDeclaration": function(node) {
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if (node.kind === "const") {
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context.getDeclaredVariables(node).forEach(checkVariable);
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}
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}
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};
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};
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module.exports.schema = [];
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