ensureIndex method Null safety

void ensureIndex(
  1. dynamic keys,
  2. {String key = '',
  3. bool unique = false,
  4. bool sparse = false,
  5. bool background = false,
  6. bool dropDups = false,
  7. Map<String, dynamic>? partialFilterExpression,
  8. String name = ''}
)

Adds index definition to create it on opening

  • keys index keys (fields)
  • options index options