EventMigration

@rotorsoft/act-root

---

@rotorsoft/act-root / act/src / EventMigration

Type Alias: EventMigration<TOld, TNew>

EventMigration<TOld, TNew> = object

Defined in: libs/act/src/types/action.ts:1099

Per-event migration definition for ScanOptions.event_migrations. Carries both the rename target and the schema-guarded transform that rewrites the event's data payload.

Type Parameters

TOld

TOld

TNew

TNew

Properties

from_schema

readonly from_schema: object

Defined in: libs/act/src/types/action.ts:1103

Schema of the source event's data. Throws on mismatch.

parse

parse: (data) => TOld

Parameters

data

unknown

Returns

TOld

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migrate

readonly migrate: (data) => TNew

Defined in: libs/act/src/types/action.ts:1107

Pure data transformer.

Parameters

data

TOld

Returns

TNew

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to

readonly to: string

Defined in: libs/act/src/types/action.ts:1101

Target event name (the current version).

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to_schema

readonly to_schema: object

Defined in: libs/act/src/types/action.ts:1105

Schema of the migrated event's data. Throws on mismatch.

parse

parse: (data) => TNew

Parameters

data

unknown

Returns

TNew