Function checkYieldExpressionGrammar

test/fixtures/snapshot/typescript.js:79438–79445

()

            }
            return type;
            function checkYieldExpressionGrammar() {
                if (!(node.flags & 8192 /* NodeFlags.YieldContext */)) {
                    grammarErrorOnFirstToken(node, ts.Diagnostics.A_yield_expression_is_only_allowed_in_a_generator_body);
                }
                if (isInParameterInitializerBeforeContainingFunction(node)) {
                    error(node, ts.Diagnostics.yield_expressions_cannot_be_used_in_a_parameter_initializer);
                }
            }
        }
        function checkConditionalExpression(node, checkMode) {
            checkTruthinessExpression(node.condition);