Function createCollectionIndexMetadata

packages/db/src/collection/indexes.ts:156–185

(
  indexId: number,
  expression: BasicExpression,
  name: string | undefined,
  resolver: IndexConstructor<TKey>,
  options: unknown,
)

}

function createCollectionIndexMetadata<TKey extends string | number>(
  indexId: number,
  expression: BasicExpression,
  name: string | undefined,
  resolver: IndexConstructor<TKey>,
  options: unknown,
): CollectionIndexMetadata {
  const resolverMetadata = resolveResolverMetadata(resolver)
  const serializedExpression = toSerializableIndexValue(expression) ?? null
  const serializedOptions = toSerializableIndexValue(options)
  const signatureInput = toSerializableIndexValue({
    signatureVersion: INDEX_SIGNATURE_VERSION,
    expression: serializedExpression,
    options: serializedOptions ?? null,
  })
  const normalizedSignatureInput = signatureInput ?? null
  const signature = stableStringifyCollectionIndexValue(
    normalizedSignatureInput,
  )

  return {
    signatureVersion: INDEX_SIGNATURE_VERSION,
    signature,
    indexId,
    name,
    expression,
    resolver: resolverMetadata,
    ...(serializedOptions === undefined ? {} : { options: serializedOptions }),
  }
}

function cloneSerializableIndexValue(
  value: CollectionIndexSerializableValue,