@aws-amplify/datastore/dist/esm/predicates/sort.mjs

AppSyncLocal support for aws-amplify

class ModelSortPredicateCreator {
    static createPredicateBuilder(modelDefinition) {
        const { name: modelName } = modelDefinition;
        const fieldNames = new Set(Object.keys(modelDefinition.fields));
        const predicate = new Proxy({}, {
            get(_target, propertyKey, receiver) {
                const field = propertyKey;
                if (!fieldNames.has(field)) {
                    throw new Error(`Invalid field for model. field: ${String(field)}, model: ${modelName}`);
                }
                const result = (sortDirection) => {
                    ModelSortPredicateCreator.sortPredicateGroupsMap
                        .get(receiver)
                        ?.push({ field, sortDirection });
                    return receiver;
                };
                return result;
            },
        });
        ModelSortPredicateCreator.sortPredicateGroupsMap.set(predicate, []);
        return predicate;
    }
    static isValidPredicate(predicate) {
        return ModelSortPredicateCreator.sortPredicateGroupsMap.has(predicate);
    }
    static getPredicates(predicate, throwOnInvalid = true) {
        if (throwOnInvalid &&
            !ModelSortPredicateCreator.isValidPredicate(predicate)) {
            throw new Error('The predicate is not valid');
        }
        const predicateGroup = ModelSortPredicateCreator.sortPredicateGroupsMap.get(predicate);
        if (predicateGroup) {
            return predicateGroup;
        }
        else {
            throw new Error('Predicate group not found');
        }
    }
    // transforms cb-style predicate into Proxy
    static createFromExisting(modelDefinition, existing) {
        if (!existing || !modelDefinition) {
            return undefined;
        }
        return existing(ModelSortPredicateCreator.createPredicateBuilder(modelDefinition));
    }
}
ModelSortPredicateCreator.sortPredicateGroupsMap = new WeakMap();

export { ModelSortPredicateCreator };
//# sourceMappingURL=sort.mjs.map