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/**
* @fileoverview A rule to disallow modifying variables of class declarations
* @author Toru Nagashima
*/
"use strict";
const astUtils = require("../ast-utils");
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow reassigning class members",
category: "ECMAScript 6",
recommended: true
},
schema: []
},
create: function(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(function(reference) {
context.report(
reference.identifier,
"'{{name}}' is a class.",
{name: reference.identifier.name});
});
}
/**
* Finds and reports references that are non initializer and writable.
* @param {ASTNode} node - A ClassDeclaration/ClassExpression node to check.
* @returns {void}
*/
function checkForClass(node) {
context.getDeclaredVariables(node).forEach(checkVariable);
}
return {
ClassDeclaration: checkForClass,
ClassExpression: checkForClass
};
}
};
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