Function getOptionalExpressionType

test/fixtures/snapshot/typescript.js:67664–67668

(exprType, expression)

            return wasOptional ? ts.isOutermostOptionalChain(node) ? getOptionalType(type) : addOptionalTypeMarker(type) : type;
        }
        function getOptionalExpressionType(exprType, expression) {
            return ts.isExpressionOfOptionalChainRoot(expression) ? getNonNullableType(exprType) :
                ts.isOptionalChain(expression) ? removeOptionalTypeMarker(exprType) :
                    exprType;
        }
        function removeMissingType(type, isOptional) {
            return exactOptionalPropertyTypes && isOptional ? removeType(type, missingType) : type;
        }