"use strict"; var _definerule = require("../utils/define-rule"); var url = "https://nextjs.org/docs/messages/no-async-client-component"; var description = "Prevent client components from being async functions."; var message = "".concat(description, " See: ").concat(url); function isCapitalized(str) { return /[A-Z]/.test(str === null || str === void 0 ? void 0 : str[0]); } module.exports = (0, _definerule.defineRule)({ meta: { docs: { description: description, recommended: true, url: url }, type: "problem", schema: [] }, create: function create(context) { return { Program: function Program(node) { var isClientComponent = false; var _iteratorNormalCompletion = true, _didIteratorError = false, _iteratorError = undefined; try { var _loop = function() { var block = _step.value; if (block.type === "ExpressionStatement" && block.expression.type === "Literal" && block.expression.value === "use client") { isClientComponent = true; } if (block.type === "ExportDefaultDeclaration" && isClientComponent) { var _block_declaration; // export default async function MyComponent() {...} if (((_block_declaration = block.declaration) === null || _block_declaration === void 0 ? void 0 : _block_declaration.type) === "FunctionDeclaration" && block.declaration.async && isCapitalized(block.declaration.id.name)) { context.report({ node: block, message: message }); } // async function MyComponent() {...}; export default MyComponent; if (block.declaration.type === "Identifier" && isCapitalized(block.declaration.name)) { var targetName = block.declaration.name; var functionDeclaration = node.body.find(function(localBlock) { if (localBlock.type === "FunctionDeclaration" && localBlock.id.name === targetName) return true; if (localBlock.type === "VariableDeclaration" && localBlock.declarations.find(function(declaration) { var _declaration_id; return ((_declaration_id = declaration.id) === null || _declaration_id === void 0 ? void 0 : _declaration_id.type) === "Identifier" && declaration.id.name === targetName; })) return true; return false; }); if ((functionDeclaration === null || functionDeclaration === void 0 ? void 0 : functionDeclaration.type) === "FunctionDeclaration" && functionDeclaration.async) { context.report({ node: functionDeclaration, message: message }); } if ((functionDeclaration === null || functionDeclaration === void 0 ? void 0 : functionDeclaration.type) === "VariableDeclaration") { var _varDeclarator_init; var varDeclarator = functionDeclaration.declarations.find(function(declaration) { var _declaration_id; return ((_declaration_id = declaration.id) === null || _declaration_id === void 0 ? void 0 : _declaration_id.type) === "Identifier" && declaration.id.name === targetName; }); if ((varDeclarator === null || varDeclarator === void 0 ? void 0 : (_varDeclarator_init = varDeclarator.init) === null || _varDeclarator_init === void 0 ? void 0 : _varDeclarator_init.type) === "ArrowFunctionExpression" && varDeclarator.init.async) { context.report({ node: functionDeclaration, message: message }); } } } } }; for(var _iterator = node.body[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true)_loop(); } catch (err) { _didIteratorError = true; _iteratorError = err; } finally{ try { if (!_iteratorNormalCompletion && _iterator.return != null) { _iterator.return(); } } finally{ if (_didIteratorError) { throw _iteratorError; } } } } }; } });