@wpkernel/php-json-ast v0.12.6-beta.3

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@wpkernel/php-json-ast / HelperRollback

Interface: HelperRollback<TResult>

Type-only v1 descriptor for cleanup admitted after a helper succeeds.

Returning this descriptor from HelperApplyResult.rollback requests best-effort cleanup if later serial work fails. The callback remains consumer-authored and callable by its owner. The descriptor grants no evaluator admission or traversal authority; the compatibility evaluator exclusively owns admission and reverse-order invocation.

Type Parameters

TResult

TResult = unknown

Direct or recursively adopted cleanup result.

Properties

run()

readonly run: () => MaybePromise<TResult>;

Cleanup invoked at most once by one evaluator-owned traversal.

The result crosses the standard read-once thenable boundary: a direct value keeps cleanup synchronous, while a callable then is adopted before the evaluator continues to the next older cleanup.

Returns

MaybePromise<TResult>

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key?

readonly optional key: string;

Stable machine-readable helper key for diagnostics.

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label?

readonly optional label: string;

Human-readable cleanup description for observers.