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app_vue/node_modules/eslint/lib/rules/rest-spread-spacing.js

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+/**
+ * @fileoverview Enforce spacing between rest and spread operators and their expressions.
+ * @author Kai Cataldo
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce spacing between rest and spread operators and their expressions",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/rest-spread-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+
+        messages: {
+            unexpectedWhitespace: "Unexpected whitespace after {{type}} operator.",
+            expectedWhitespace: "Expected whitespace after {{type}} operator."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode(),
+            alwaysSpace = context.options[0] === "always";
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks whitespace between rest/spread operators and their expressions
+         * @param {ASTNode} node The node to check
+         * @returns {void}
+         */
+        function checkWhiteSpace(node) {
+            const operator = sourceCode.getFirstToken(node),
+                nextToken = sourceCode.getTokenAfter(operator),
+                hasWhitespace = sourceCode.isSpaceBetweenTokens(operator, nextToken);
+            let type;
+
+            switch (node.type) {
+                case "SpreadElement":
+                    type = "spread";
+                    if (node.parent.type === "ObjectExpression") {
+                        type += " property";
+                    }
+                    break;
+                case "RestElement":
+                    type = "rest";
+                    if (node.parent.type === "ObjectPattern") {
+                        type += " property";
+                    }
+                    break;
+                case "ExperimentalSpreadProperty":
+                    type = "spread property";
+                    break;
+                case "ExperimentalRestProperty":
+                    type = "rest property";
+                    break;
+                default:
+                    return;
+            }
+
+            if (alwaysSpace && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: operator.loc,
+                    messageId: "expectedWhitespace",
+                    data: {
+                        type
+                    },
+                    fix(fixer) {
+                        return fixer.replaceTextRange([operator.range[1], nextToken.range[0]], " ");
+                    }
+                });
+            } else if (!alwaysSpace && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: operator.loc.end,
+                        end: nextToken.loc.start
+                    },
+                    messageId: "unexpectedWhitespace",
+                    data: {
+                        type
+                    },
+                    fix(fixer) {
+                        return fixer.removeRange([operator.range[1], nextToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            SpreadElement: checkWhiteSpace,
+            RestElement: checkWhiteSpace,
+            ExperimentalSpreadProperty: checkWhiteSpace,
+            ExperimentalRestProperty: checkWhiteSpace
+        };
+    }
+};