Function shouldEmitWhitespaceBeforeOperand

test/fixtures/snapshot/typescript.js:112312–112329

(node)

            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
            // and minus expressions in certain cases. Specifically, consider the following two cases (parens
            // are just for clarity of exposition, and not part of the source code):
            //
            //  (+(+1))
            //  (+(++1))
            //
            // We need to emit a space in both cases. In the first case, the absence of a space will make
            // the resulting expression a prefix increment operation. And in the second, it will make the resulting
            // expression a prefix increment whose operand is a plus expression - (++(+x))
            // The same is true of minus of course.
            var operand = node.operand;
            return operand.kind === 219 /* SyntaxKind.PrefixUnaryExpression */
                && ((node.operator === 39 /* SyntaxKind.PlusToken */ && (operand.operator === 39 /* SyntaxKind.PlusToken */ || operand.operator === 45 /* SyntaxKind.PlusPlusToken */))
                    || (node.operator === 40 /* SyntaxKind.MinusToken */ && (operand.operator === 40 /* SyntaxKind.MinusToken */ || operand.operator === 46 /* SyntaxKind.MinusMinusToken */)));
        }
        function emitPostfixUnaryExpression(node) {
            emitExpression(node.operand, parenthesizer.parenthesizeOperandOfPostfixUnary);
            writeTokenText(node.operator, writeOperator);