Function emitPrefixUnaryExpression

test/fixtures/snapshot/typescript.js:112305–112311

(node)

            emitExpression(node.expression, parenthesizer.parenthesizeOperandOfPrefixUnary);
        }
        function emitPrefixUnaryExpression(node) {
            writeTokenText(node.operator, writeOperator);
            if (shouldEmitWhitespaceBeforeOperand(node)) {
                writeSpace();
            }
            emitExpression(node.operand, parenthesizer.parenthesizeOperandOfPrefixUnary);
        }
        function shouldEmitWhitespaceBeforeOperand(node) {
            // In some cases, we need to emit a space between the operator and the operand. One obvious case
            // is when the operator is an identifier, like delete or typeof. We also need to do this for plus