import type { Either } from 'fp-ts/Either';
import type { Option } from 'fp-ts/Option';
import type { Task } from 'fp-ts/Task';
import type { DocData, DocKey } from '../..';
export type Provider = {
    readonly code: 'Provider';
    readonly value: unknown;
};
export type Forbidden = {
    readonly code: 'Forbidden';
};
export type Error = Forbidden | Provider;
export type DocState = Either<Error & {
    readonly capability: 'client.db.getDocWhen';
}, Option<DocData>>;
export type Param<T> = {
    readonly key: DocKey;
    readonly select: (docState: DocState) => Option<T>;
};
export type Fn = <T>(p: Param<T>) => Task<T>;
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