Function parseSimpleUnaryExpression

test/fixtures/snapshot/typescript.js:34979–35005

* Parse ES7 simple-unary expression or higher: * * ES7 UnaryExpression: * 1) UpdateExpression[?yield] * 2) delete UnaryExpression[?yield] * 3) void UnaryExpression[?yield] * 4) typeof UnaryExpression[?yield] * 5)

()

         *      9) [+Await] await UnaryExpression[?yield]
         */
        function parseSimpleUnaryExpression() {
            switch (token()) {
                case 39 /* SyntaxKind.PlusToken */:
                case 40 /* SyntaxKind.MinusToken */:
                case 54 /* SyntaxKind.TildeToken */:
                case 53 /* SyntaxKind.ExclamationToken */:
                    return parsePrefixUnaryExpression();
                case 89 /* SyntaxKind.DeleteKeyword */:
                    return parseDeleteExpression();
                case 112 /* SyntaxKind.TypeOfKeyword */:
                    return parseTypeOfExpression();
                case 114 /* SyntaxKind.VoidKeyword */:
                    return parseVoidExpression();
                case 29 /* SyntaxKind.LessThanToken */:
                    // This is modified UnaryExpression grammar in TypeScript
                    //  UnaryExpression (modified):
                    //      < type > UnaryExpression
                    return parseTypeAssertion();
                case 132 /* SyntaxKind.AwaitKeyword */:
                    if (isAwaitExpression()) {
                        return parseAwaitExpression();
                    }
                // falls through
                default:
                    return parseUpdateExpression();
            }
        }
        /**
         * Check if the current token can possibly be an ES7 increment expression.
         *