Function checkFunctionOrMethodDeclaration

test/fixtures/snapshot/typescript.js:81872–81932

(node)

            }
        }
        function checkFunctionOrMethodDeclaration(node) {
            var _a;
            checkDecorators(node);
            checkSignatureDeclaration(node);
            var functionFlags = ts.getFunctionFlags(node);
            // Do not use hasDynamicName here, because that returns false for well known symbols.
            // We want to perform checkComputedPropertyName for all computed properties, including
            // well known symbols.
            if (node.name && node.name.kind === 162 /* SyntaxKind.ComputedPropertyName */) {
                // This check will account for methods in class/interface declarations,
                // as well as accessors in classes/object literals
                checkComputedPropertyName(node.name);
            }
            if (hasBindableName(node)) {
                // first we want to check the local symbol that contain this declaration
                // - if node.localSymbol !== undefined - this is current declaration is exported and localSymbol points to the local symbol
                // - if node.localSymbol === undefined - this node is non-exported so we can just pick the result of getSymbolOfNode
                var symbol = getSymbolOfNode(node);
                var localSymbol = node.localSymbol || symbol;
                // Since the javascript won't do semantic analysis like typescript,
                // if the javascript file comes before the typescript file and both contain same name functions,
                // checkFunctionOrConstructorSymbol wouldn't be called if we didnt ignore javascript function.
                var firstDeclaration = (_a = localSymbol.declarations) === null || _a === void 0 ? void 0 : _a.find(
                // Get first non javascript function declaration
                function (declaration) { return declaration.kind === node.kind && !(declaration.flags & 262144 /* NodeFlags.JavaScriptFile */); });
                // Only type check the symbol once
                if (node === firstDeclaration) {
                    checkFunctionOrConstructorSymbol(localSymbol);
                }
                if (symbol.parent) {
                    // run check on export symbol to check that modifiers agree across all exported declarations
                    checkFunctionOrConstructorSymbol(symbol);
                }
            }
            var body = node.kind === 168 /* SyntaxKind.MethodSignature */ ? undefined : node.body;
            checkSourceElement(body);
            checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, getReturnTypeFromAnnotation(node));
            addLazyDiagnostic(checkFunctionOrMethodDeclarationDiagnostics);
            // A js function declaration can have a @type tag instead of a return type node, but that type must have a call signature
            if (ts.isInJSFile(node)) {
                var typeTag = ts.getJSDocTypeTag(node);
                if (typeTag && typeTag.typeExpression && !getContextualCallSignature(getTypeFromTypeNode(typeTag.typeExpression), node)) {
                    error(typeTag.typeExpression.type, ts.Diagnostics.The_type_of_a_function_declaration_must_match_the_function_s_signature);
                }
            }
            function checkFunctionOrMethodDeclarationDiagnostics() {
                if (!ts.getEffectiveReturnTypeNode(node)) {
                    // Report an implicit any error if there is no body, no explicit return type, and node is not a private method
                    // in an ambient context
                    if (ts.nodeIsMissing(body) && !isPrivateWithinAmbient(node)) {
                        reportImplicitAny(node, anyType);
                    }
                    if (functionFlags & 1 /* FunctionFlags.Generator */ && ts.nodeIsPresent(body)) {
                        // A generator with a body and no type annotation can still cause errors. It can error if the
                        // yielded values have no common supertype, or it can give an implicit any error if it has no
                        // yielded values. The only way to trigger these errors is to try checking its return type.
                        getReturnTypeOfSignature(getSignatureFromDeclaration(node));
                    }