first commit

app_vue/node_modules/eslint/lib/rules/no-useless-computed-key.js

@@ -0,0 +1,109 @@
+/**
+ * @fileoverview Rule to disallow unnecessary computed property keys in object literals
+ * @author Burak Yigit Kaya
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "disallow unnecessary computed property keys in objects and classes",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/no-useless-computed-key"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                enforceForClassMembers: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+        fixable: "code",
+
+        messages: {
+            unnecessarilyComputedProperty: "Unnecessarily computed property [{{property}}] found."
+        }
+    },
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const enforceForClassMembers = context.options[0] && context.options[0].enforceForClassMembers;
+
+        /**
+         * Reports a given node if it violated this rule.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            if (!node.computed) {
+                return;
+            }
+
+            const key = node.key,
+                nodeType = typeof key.value;
+
+            let allowedKey;
+
+            if (node.type === "MethodDefinition") {
+                allowedKey = node.static ? "prototype" : "constructor";
+            } else {
+                allowedKey = "__proto__";
+            }
+
+            if (key.type === "Literal" && (nodeType === "string" || nodeType === "number") && key.value !== allowedKey) {
+                context.report({
+                    node,
+                    messageId: "unnecessarilyComputedProperty",
+                    data: { property: sourceCode.getText(key) },
+                    fix(fixer) {
+                        const leftSquareBracket = sourceCode.getTokenBefore(key, astUtils.isOpeningBracketToken);
+                        const rightSquareBracket = sourceCode.getTokenAfter(key, astUtils.isClosingBracketToken);
+
+                        // If there are comments between the brackets and the property name, don't do a fix.
+                        if (sourceCode.commentsExistBetween(leftSquareBracket, rightSquareBracket)) {
+                            return null;
+                        }
+
+                        const tokenBeforeLeftBracket = sourceCode.getTokenBefore(leftSquareBracket);
+
+                        // Insert a space before the key to avoid changing identifiers, e.g. ({ get[2]() {} }) to ({ get2() {} })
+                        const needsSpaceBeforeKey = tokenBeforeLeftBracket.range[1] === leftSquareBracket.range[0] &&
+                            !astUtils.canTokensBeAdjacent(tokenBeforeLeftBracket, sourceCode.getFirstToken(key));
+
+                        const replacementKey = (needsSpaceBeforeKey ? " " : "") + key.raw;
+
+                        return fixer.replaceTextRange([leftSquareBracket.range[0], rightSquareBracket.range[1]], replacementKey);
+                    }
+                });
+            }
+        }
+
+        /**
+         * A no-op function to act as placeholder for checking a node when the `enforceForClassMembers` option is `false`.
+         * @returns {void}
+         * @private
+         */
+        function noop() {}
+
+        return {
+            Property: check,
+            MethodDefinition: enforceForClassMembers ? check : noop
+        };
+    }
+};