rowid hash is removed but we still typecheck. Its dead code.

packages/zero-cache/src/types/row-key.test.ts

@@ -2,7 +2,6 @@ import {describe, expect, test} from 'vitest';
 import {
   type RowKey,
   normalizedKeyOrder,
-  rowIDHash,
   rowIDString,
   rowKeyString,
 } from './row-key.js';
@@ -101,7 +100,7 @@ describe('types/row-key', () => {
       for (const keys of c.keys) {
         expect(rowKeyString(keys)).toBe(c.rowKeyString);
         expect(rowIDString({schema, table, rowKey: keys})).toBe(c.rowIDString);
-        expect(rowIDHash({schema, table, rowKey: keys})).toBe(c.rowIDHash);
+        // expect(rowIDHash({schema, table, rowKey: keys})).toBe(c.rowIDHash);
       }
     });
   }

packages/zero-cache/src/types/row-key.ts

@@ -1,4 +1,3 @@
-import {h64WithReverse} from '../../../shared/src/h64-with-reverse.js';
 import {stringify, type JSONValue} from './bigint-json.js';
 
 export type ColumnType = {readonly typeOid: number};
@@ -64,29 +63,3 @@ export function rowIDString(id: RowID): string {
   rowIDStrings.set(id, val);
   return val;
 }
-
-const rowIDHashes = new WeakMap<RowID, string>();
-
-/**
- * A RowIDHash is a 128-bit column-order-agnostic hash of the schema, table name, and
- * column name / value tuples of a row key. It serves as a compact identifier for
- * a row in the database that:
- *
- * * is guaranteed to fit within the constraints of the CVR store (Durable Object
- *   storage keys cannot exceed 2KiB)
- * * can be used to compactly encode (and lookup) the rows of query results for CVR
- *   bookkeeping.
- *
- * The hash is encoded in `base36`, with the maximum 128-bit value being 25 characters long.
- */
-export function rowIDHash(id: RowID): string {
-  let hash = rowIDHashes.get(id);
-  if (hash) {
-    return hash;
-  }
-
-  const str = rowIDString(id);
-  hash = h64WithReverse(str);
-  rowIDHashes.set(id, hash);
-  return hash;
-}