Function IsOptionalChainRoot

internal/ast/utilities.go:362–364

Determines if node is the root expression of an OptionalChain

(node *Expression)

// Determines if node is the root expression of an OptionalChain
func IsOptionalChainRoot(node *Expression) bool {
	return IsOptionalChain(node) && !IsNonNullExpression(node) && getQuestionDotToken(node) != nil
}

// Determines whether a node is the outermost `OptionalChain` in an ECMAScript `OptionalExpression`:
//