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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / eslint / lib / rules / no-return-assign.js

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-return-assign.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-return-assign.js
new file mode 100644 (file)
index 0000000..ea6a6bb
--- /dev/null
+++ b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-return-assign.js
@@ -0,0 +1,75 @@
+/**
+ * @fileoverview Rule to flag when return statement contains assignment
+ * @author Ilya Volodin
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_TYPE = /^(?:[a-zA-Z]+?Statement|ArrowFunctionExpression|FunctionExpression|ClassExpression)$/u;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "disallow assignment operators in `return` statements",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/no-return-assign"
+        },
+
+        schema: [
+            {
+                enum: ["except-parens", "always"]
+            }
+        ]
+    },
+
+    create(context) {
+        const always = (context.options[0] || "except-parens") !== "except-parens";
+        const sourceCode = context.getSourceCode();
+
+        return {
+            AssignmentExpression(node) {
+                if (!always && astUtils.isParenthesised(sourceCode, node)) {
+                    return;
+                }
+
+                let currentChild = node;
+                let parent = currentChild.parent;
+
+                // Find ReturnStatement or ArrowFunctionExpression in ancestors.
+                while (parent && !SENTINEL_TYPE.test(parent.type)) {
+                    currentChild = parent;
+                    parent = parent.parent;
+                }
+
+                // Reports.
+                if (parent && parent.type === "ReturnStatement") {
+                    context.report({
+                        node: parent,
+                        message: "Return statement should not contain assignment."
+                    });
+                } else if (parent && parent.type === "ArrowFunctionExpression" && parent.body === currentChild) {
+                    context.report({
+                        node: parent,
+                        message: "Arrow function should not return assignment."
+                    });
+                }
+            }
+        };
+    }
+};