Source: https://tanstack.com/db/latest/docs/reference/powersync-db-collection/type-aliases/SerializerConfig

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On this page

• Type Alias: SerializerConfig<TOutput, TSQLite>

• Type Parameters

• TOutput

• TSQLite

• Properties

• onDeserializationError()

• Parameters

• error

• Returns

• serializer?

SerializerConfig

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Type Alias: SerializerConfig<TOutput, TSQLite>
==============================================

ts

type SerializerConfig<TOutput, TSQLite> = object;


type SerializerConfig<TOutput, TSQLite> = object;

Defined in: definitions.ts:61

Type Parameters
--------------- ### TOutput

TOutput extends Record<string, unknown>

### TSQLite

TSQLite extends Record<string, unknown>

Properties
---------- ### onDeserializationError()

ts

onDeserializationError: (error) => void;


onDeserializationError: (error) => void;

Defined in: definitions.ts:94

Application logic should ensure that incoming synced data is always valid. Failing to deserialize and apply incoming changes results in data inconsistency - which is a fatal error. Use this callback to react to deserialization errors.

#### Parameters ##### error

StandardSchemaV1.FailureResult

#### Returns

void

---

### serializer?

ts

optional serializer: CustomSQLiteSerializer<TOutput, TSQLite>;


optional serializer: CustomSQLiteSerializer<TOutput, TSQLite>;

Defined in: definitions.ts:87

Optional partial serializer object for customizing how individual columns are serialized for SQLite.

This should be a partial map of column keys to serialization functions, following the CustomSQLiteSerializer type. Each function receives the column value and returns a value compatible with SQLite storage.

If not provided for a column, the default behavior is used:

• TEXT: Strings are stored as-is; Dates are converted to ISO strings; other types are JSON-stringified.
• INTEGER/REAL: Numbers are stored as-is; booleans are mapped to 1/0.

Use this option to override serialization for specific columns, such as formatting dates, handling enums, or serializing complex objects.

Example:

typescript

serializer: {
  createdAt: (date) => date.getTime(), // Store as timestamp
  meta: (meta) => JSON.stringify(meta), // Custom object serialization
}


serializer: {
  createdAt: (date) => date.getTime(), // Store as timestamp
  meta: (meta) => JSON.stringify(meta), // Custom object serialization
}

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