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/*
* Copyright (C) 2022 Kristóf Marussy <kristof@marussy.com>
*
* This file is part of Sophie.
*
* Sophie is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
/**
* @file This file implements a technique to force-override properties of a model.
*
* The overridden properties must conform to the SnapshotIt and SnapshotOut format
* of the original model. Essentially, this means that only views and actions can
* be added safely.
*
* @see https://github.com/mobxjs/mobx-state-tree/issues/1403#issuecomment-940843087
*/
import {
IAnyModelType,
IModelType,
ModelProperties,
SnapshotIn,
SnapshotOut,
} from 'mobx-state-tree';
export type IUnsafeOverriddenModelType<
BASE extends IAnyModelType,
PROPS extends ModelProperties,
> = BASE extends IModelType<infer P, infer O, infer CC, infer CS>
? IModelType<Omit<P, keyof PROPS> & PROPS, O, CC, CS>
: never;
export type IOverriddenModelType<
BASE extends IAnyModelType,
PROPS extends ModelProperties,
> = SnapshotIn<BASE> extends SnapshotIn<IUnsafeOverriddenModelType<BASE, PROPS>>
? SnapshotOut<
IUnsafeOverriddenModelType<BASE, PROPS>
> extends SnapshotOut<BASE>
? IUnsafeOverriddenModelType<BASE, PROPS>
: never
: never;
export default function overrideProps<
BASE extends IAnyModelType,
PROPS extends ModelProperties,
>(base: BASE, props: PROPS): IOverriddenModelType<BASE, PROPS> {
return base.props(props) as IOverriddenModelType<BASE, PROPS>;
}
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