Interface IMetadataValidationState

Represents the validity of a metadata object.

interface IMetadataValidationState {
    addInvalidateListener: (listener: () => void) => void;
    invalidate: () => void;
    valid: boolean;
}

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addInvalidateListener invalidate valid

Properties

addInvalidateListener

addInvalidateListener: (listener: () => void) => void

Add an listener that will be invoked when the metadata object becomes invalid.

No expensive operations should be done in these listeners, only other invalidations. If other operations should be done, those should be scheduled in next ticks.

Type declaration

    • (listener: () => void): void

    • Parameters

      • listener: () => void

        An invalidation listener.

      Returns void

invalidate

invalidate: () => void

Mark the metadta object as invalid.

This will set the valid field to false, and invoke the invalidation listeners.

valid

valid: boolean

If the metadata object is valid.

If it is invalid, the metadata values should be considered outdated, and a new version should be requested.

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