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qwen/nodejs/node_modules/eslint/lib/rules/prefer-reflect.js

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+/**
+ * @fileoverview Rule to suggest using "Reflect" api over Function/Object methods
+ * @author Keith Cirkel <http://keithcirkel.co.uk>
+ * @deprecated in ESLint v3.9.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `Reflect` methods where applicable",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-reflect"
+        },
+
+        deprecated: true,
+
+        replacedBy: [],
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            enum: [
+                                "apply",
+                                "call",
+                                "delete",
+                                "defineProperty",
+                                "getOwnPropertyDescriptor",
+                                "getPrototypeOf",
+                                "setPrototypeOf",
+                                "isExtensible",
+                                "getOwnPropertyNames",
+                                "preventExtensions"
+                            ]
+                        },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            preferReflect: "Avoid using {{existing}}, instead use {{substitute}}."
+        }
+    },
+
+    create(context) {
+        const existingNames = {
+            apply: "Function.prototype.apply",
+            call: "Function.prototype.call",
+            defineProperty: "Object.defineProperty",
+            getOwnPropertyDescriptor: "Object.getOwnPropertyDescriptor",
+            getPrototypeOf: "Object.getPrototypeOf",
+            setPrototypeOf: "Object.setPrototypeOf",
+            isExtensible: "Object.isExtensible",
+            getOwnPropertyNames: "Object.getOwnPropertyNames",
+            preventExtensions: "Object.preventExtensions"
+        };
+
+        const reflectSubstitutes = {
+            apply: "Reflect.apply",
+            call: "Reflect.apply",
+            defineProperty: "Reflect.defineProperty",
+            getOwnPropertyDescriptor: "Reflect.getOwnPropertyDescriptor",
+            getPrototypeOf: "Reflect.getPrototypeOf",
+            setPrototypeOf: "Reflect.setPrototypeOf",
+            isExtensible: "Reflect.isExtensible",
+            getOwnPropertyNames: "Reflect.getOwnPropertyNames",
+            preventExtensions: "Reflect.preventExtensions"
+        };
+
+        const exceptions = (context.options[0] || {}).exceptions || [];
+
+        /**
+         * Reports the Reflect violation based on the `existing` and `substitute`
+         * @param {Object} node The node that violates the rule.
+         * @param {string} existing The existing method name that has been used.
+         * @param {string} substitute The Reflect substitute that should be used.
+         * @returns {void}
+         */
+        function report(node, existing, substitute) {
+            context.report({
+                node,
+                messageId: "preferReflect",
+                data: {
+                    existing,
+                    substitute
+                }
+            });
+        }
+
+        return {
+            CallExpression(node) {
+                const methodName = (node.callee.property || {}).name;
+                const isReflectCall = (node.callee.object || {}).name === "Reflect";
+                const hasReflectSubstitute = Object.prototype.hasOwnProperty.call(reflectSubstitutes, methodName);
+                const userConfiguredException = exceptions.includes(methodName);
+
+                if (hasReflectSubstitute && !isReflectCall && !userConfiguredException) {
+                    report(node, existingNames[methodName], reflectSubstitutes[methodName]);
+                }
+            },
+            UnaryExpression(node) {
+                const isDeleteOperator = node.operator === "delete";
+                const targetsIdentifier = node.argument.type === "Identifier";
+                const userConfiguredException = exceptions.includes("delete");
+
+                if (isDeleteOperator && !targetsIdentifier && !userConfiguredException) {
+                    report(node, "the delete keyword", "Reflect.deleteProperty");
+                }
+            }
+        };
+
+    }
+};