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app_vue/node_modules/eslint/lib/rules/no-whitespace-before-property.js

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+/**
+ * @fileoverview Rule to disallow whitespace before properties
+ * @author Kai Cataldo
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "disallow whitespace before properties",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/no-whitespace-before-property"
+        },
+
+        fixable: "whitespace",
+        schema: [],
+
+        messages: {
+            unexpectedWhitespace: "Unexpected whitespace before property {{propName}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports whitespace before property token
+         * @param {ASTNode} node the node to report in the event of an error
+         * @param {Token} leftToken the left token
+         * @param {Token} rightToken the right token
+         * @returns {void}
+         * @private
+         */
+        function reportError(node, leftToken, rightToken) {
+            context.report({
+                node,
+                messageId: "unexpectedWhitespace",
+                data: {
+                    propName: sourceCode.getText(node.property)
+                },
+                fix(fixer) {
+                    let replacementText = "";
+
+                    if (!node.computed && !node.optional && astUtils.isDecimalInteger(node.object)) {
+
+                        /*
+                         * If the object is a number literal, fixing it to something like 5.toString() would cause a SyntaxError.
+                         * Don't fix this case.
+                         */
+                        return null;
+                    }
+
+                    // Don't fix if comments exist.
+                    if (sourceCode.commentsExistBetween(leftToken, rightToken)) {
+                        return null;
+                    }
+
+                    if (node.optional) {
+                        replacementText = "?.";
+                    } else if (!node.computed) {
+                        replacementText = ".";
+                    }
+
+                    return fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], replacementText);
+                }
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            MemberExpression(node) {
+                let rightToken;
+                let leftToken;
+
+                if (!astUtils.isTokenOnSameLine(node.object, node.property)) {
+                    return;
+                }
+
+                if (node.computed) {
+                    rightToken = sourceCode.getTokenBefore(node.property, astUtils.isOpeningBracketToken);
+                    leftToken = sourceCode.getTokenBefore(rightToken, node.optional ? 1 : 0);
+                } else {
+                    rightToken = sourceCode.getFirstToken(node.property);
+                    leftToken = sourceCode.getTokenBefore(rightToken, 1);
+                }
+
+                if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken)) {
+                    reportError(node, leftToken, rightToken);
+                }
+            }
+        };
+    }
+};