@ngrx/entity/src/models.d.ts

Common utilities for entity reducers

export type Comparer<T> = (a: T, b: T) => number;
export type IdSelectorStr<T> = (model: T) => string;
export type IdSelectorNum<T> = (model: T) => number;
export type IdSelector<T> = IdSelectorStr<T> | IdSelectorNum<T>;
export interface DictionaryNum<T> {
    [id: number]: T | undefined;
}
export declare abstract class Dictionary<T> implements DictionaryNum<T> {
    [id: string]: T | undefined;
}
export interface UpdateStr<T> {
    id: string;
    changes: Partial<T>;
}
export interface UpdateNum<T> {
    id: number;
    changes: Partial<T>;
}
export type Update<T> = UpdateStr<T> | UpdateNum<T>;
export type Predicate<T> = (entity: T) => boolean;
export type EntityMap<T> = (entity: T) => T;
export interface EntityMapOneNum<T> {
    id: number;
    map: EntityMap<T>;
}
export interface EntityMapOneStr<T> {
    id: string;
    map: EntityMap<T>;
}
export type EntityMapOne<T> = EntityMapOneNum<T> | EntityMapOneStr<T>;
export interface EntityState<T> {
    ids: string[] | number[];
    entities: Dictionary<T>;
}
export interface EntityDefinition<T> {
    selectId: IdSelector<T>;
    sortComparer: false | Comparer<T>;
}
export interface EntityStateAdapter<T> {
    addOne<S extends EntityState<T>>(entity: T, state: S): S;
    addMany<S extends EntityState<T>>(entities: T[], state: S): S;
    setAll<S extends EntityState<T>>(entities: T[], state: S): S;
    setOne<S extends EntityState<T>>(entity: T, state: S): S;
    setMany<S extends EntityState<T>>(entities: T[], state: S): S;
    removeOne<S extends EntityState<T>>(key: string, state: S): S;
    removeOne<S extends EntityState<T>>(key: number, state: S): S;
    removeMany<S extends EntityState<T>>(keys: string[], state: S): S;
    removeMany<S extends EntityState<T>>(keys: number[], state: S): S;
    removeMany<S extends EntityState<T>>(predicate: Predicate<T>, state: S): S;
    removeAll<S extends EntityState<T>>(state: S): S;
    updateOne<S extends EntityState<T>>(update: Update<T>, state: S): S;
    updateMany<S extends EntityState<T>>(updates: Update<T>[], state: S): S;
    upsertOne<S extends EntityState<T>>(entity: T, state: S): S;
    upsertMany<S extends EntityState<T>>(entities: T[], state: S): S;
    mapOne<S extends EntityState<T>>(map: EntityMapOne<T>, state: S): S;
    map<S extends EntityState<T>>(map: EntityMap<T>, state: S): S;
}
export type EntitySelectors<T, V> = {
    selectIds: (state: V) => string[] | number[];
    selectEntities: (state: V) => Dictionary<T>;
    selectAll: (state: V) => T[];
    selectTotal: (state: V) => number;
};
export interface EntityAdapter<T> extends EntityStateAdapter<T> {
    selectId: IdSelector<T>;
    sortComparer: false | Comparer<T>;
    getInitialState(): EntityState<T>;
    getInitialState<S extends object>(state: S): EntityState<T> & S;
    getSelectors(): EntitySelectors<T, EntityState<T>>;
    getSelectors<V>(selectState: (state: V) => EntityState<T>): EntitySelectors<T, V>;
}