74 lines
1.8 KiB
JavaScript
Executable File
74 lines
1.8 KiB
JavaScript
Executable File
/**
|
|
* @fileoverview A rule to disallow modifying variables that are declared using `const`
|
|
* @author Toru Nagashima
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
const astUtils = require("./utils/ast-utils");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Helpers
|
|
//------------------------------------------------------------------------------
|
|
|
|
const CONSTANT_BINDINGS = new Set(["const", "using", "await using"]);
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
/** @type {import('../types').Rule.RuleModule} */
|
|
module.exports = {
|
|
meta: {
|
|
type: "problem",
|
|
|
|
docs: {
|
|
description:
|
|
"Disallow reassigning `const`, `using`, and `await using` variables",
|
|
recommended: true,
|
|
url: "https://eslint.org/docs/latest/rules/no-const-assign",
|
|
},
|
|
|
|
schema: [],
|
|
|
|
messages: {
|
|
const: "'{{name}}' is constant.",
|
|
},
|
|
},
|
|
|
|
create(context) {
|
|
const sourceCode = context.sourceCode;
|
|
|
|
/**
|
|
* 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 (CONSTANT_BINDINGS.has(node.kind)) {
|
|
sourceCode
|
|
.getDeclaredVariables(node)
|
|
.forEach(checkVariable);
|
|
}
|
|
},
|
|
};
|
|
},
|
|
};
|