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- /**
- * @fileoverview Rule to flag when using new Function
- * @author Ilya Volodin
- */
-
- "use strict";
-
- //------------------------------------------------------------------------------
- // Requirements
- //------------------------------------------------------------------------------
-
- const astUtils = require("./utils/ast-utils");
-
- //------------------------------------------------------------------------------
- // Helpers
- //------------------------------------------------------------------------------
-
- const callMethods = new Set(["apply", "bind", "call"]);
-
- //------------------------------------------------------------------------------
- // Rule Definition
- //------------------------------------------------------------------------------
-
- /** @type {import('../shared/types').Rule} */
- module.exports = {
- meta: {
- type: "suggestion",
-
- docs: {
- description: "Disallow `new` operators with the `Function` object",
- recommended: false,
- url: "https://eslint.org/docs/latest/rules/no-new-func"
- },
-
- schema: [],
-
- messages: {
- noFunctionConstructor: "The Function constructor is eval."
- }
- },
-
- create(context) {
- const sourceCode = context.sourceCode;
-
- return {
- "Program:exit"(node) {
- const globalScope = sourceCode.getScope(node);
- const variable = globalScope.set.get("Function");
-
- if (variable && variable.defs.length === 0) {
- variable.references.forEach(ref => {
- const idNode = ref.identifier;
- const { parent } = idNode;
- let evalNode;
-
- if (parent) {
- if (idNode === parent.callee && (
- parent.type === "NewExpression" ||
- parent.type === "CallExpression"
- )) {
- evalNode = parent;
- } else if (
- parent.type === "MemberExpression" &&
- idNode === parent.object &&
- callMethods.has(astUtils.getStaticPropertyName(parent))
- ) {
- const maybeCallee = parent.parent.type === "ChainExpression" ? parent.parent : parent;
-
- if (maybeCallee.parent.type === "CallExpression" && maybeCallee.parent.callee === maybeCallee) {
- evalNode = maybeCallee.parent;
- }
- }
- }
-
- if (evalNode) {
- context.report({
- node: evalNode,
- messageId: "noFunctionConstructor"
- });
- }
- });
- }
- }
- };
-
- }
- };
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