Rely compiler throws error when pageInfo does not have hasPreviousPage key

I'm trying to do only forward pagination. Here's my SDL (I've skipped irrelevant parts of the schema):
```graphql
type Group implements Node {
id: ID!
emailInvitations(
first: NonNegativeInt
after: String
filter: EmailInvitationsFilter
): EmailInvitationConnection
}

type EmailInvitationConnection {
edges: [EmailInvitationEdge!]
pageInfo: EmailInvitationConnectionPageInfo!
totalCount: NonNegativeInt
}
type EmailInvitationConnectionPageInfo {
hasNextPage: Boolean!
endCursor: String!
}
```
And I'm using usePagination with the following fragment
```graphql
fragment Invitations_group on Group
@refetchable(queryName: "EmailInvitationsPaginationQuery")
@argumentDefinitions(
count: { type: "NonNegativeInt!", defaultValue: 5 }
cursor: { type: "String", defaultValue: null }
status: { type: "EmailInvitationStatus", defaultValue: null }
email: { type: "StringFilter", defaultValue: null }
) {
emailInvitations(
first: $count
after: $cursor
filter: { status: $status, email: $email }
) @connection(key: "Invitations_group_emailInvitations") {
edges {
node {
...Invitations_row
id
}
}
pageInfo {
hasNextPage
endCursor
}
}
}
```
When using relay compiler for typescript, it's throws the error:
```
ERROR:
Internal Error: Unknown field 'hasPreviousPage' on type 'EmailInvitationConnectionPageInfo'.
```
My question is if I only want to do forward pagination, why does relay compiler enforce hasPreviousPage field as required on pageInfo?