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- /**
- * @fileoverview Rule to flag when using constructor for wrapper objects
- * @author Ilya Volodin
- */
- "use strict";
- //------------------------------------------------------------------------------
- // Rule Definition
- //------------------------------------------------------------------------------
- module.exports = {
- meta: {
- type: "suggestion",
- docs: {
- description: "disallow `new` operators with the `String`, `Number`, and `Boolean` objects",
- category: "Best Practices",
- recommended: false,
- url: "https://eslint.org/docs/rules/no-new-wrappers"
- },
- schema: [],
- messages: {
- noConstructor: "Do not use {{fn}} as a constructor."
- }
- },
- create(context) {
- return {
- NewExpression(node) {
- const wrapperObjects = ["String", "Number", "Boolean"];
- if (wrapperObjects.indexOf(node.callee.name) > -1) {
- context.report({
- node,
- messageId: "noConstructor",
- data: { fn: node.callee.name }
- });
- }
- }
- };
- }
- };
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