connection step always throws

[romeovs]

Summary

connection() step always throws an error: Cannot read properties of undefined (reading 'items') coming from this area in connection.ts.

Steps to reproduce

I've got a resolver set up which builds through graphile-build and graphile-export to this code:

const Query_seasons_extensions = {
  __proto__: null,
  grafast: {
    plan(_) {
      return connection(
        registry.pgResources.document.find({
          type: "season",
        }),
      )
    },
  },
}

which seems like the most straightforward use of connection: passing it a PgSelectStep.

Expected results

See no errors

Actual results

Got the aforementioned error

Additional context

Relevant versions:

"@dataplan/pg": "1.0.0-rc.7",
"grafast": "1.0.0-rc.8",
"graphile-build": "5.0.0-rc.5",
"graphile-config": "1.0.0-rc.5",
"graphile-export": "1.0.0-rc.5",
"graphile-utils": "5.0.0-rc.7",
"graphql": "16.13.0",
"pg": "^8.11.5",
"pg-sql2": "5.0.0-rc.4",

[benjie]

This looks like one of the most standard uses; can you reproduce this on https://github.com/benjie/ouch ? Could be the way the rest of the schema is hooked up.

[romeovs]

Here's some more info. If I log the argument to connection() before it goes in, I see PgSelect➊<document>[6] as expected.

If I log the value of collectionValue at connection.ts#L817 it is undefined.

If I log the value of values at connection.ts#L800, it shows:

[
  {
    isBatch: false,
    at: [Function: unaryAt],
    unaryValue: [Function: unaryThisDotValue],
    _flagsAt: [Function: unaryFlagsAt],
    _getStateUnion: [Function: unaryGetStateUnion],
    _setResult: [Function: unarySetResult],
    _copyResult: [Function: unaryCopyResult],
    value: undefined,
    _entryFlags: 2
  }
]

note that value: is undefined there.

I'll try and reproduce the issue in ouch soon!