@data-client/core
Version:
Async State Management without the Management. REST, GraphQL, SSE, Websockets, Fetch
60 lines • 8.13 kB
JavaScript
import { expireReducer } from './expireReducer.js';
import { fetchReducer } from './fetchReducer.js';
import { invalidateReducer } from './invalidateReducer.js';
import { setReducer } from './setReducer.js';
import { setResponseReducer } from './setResponseReducer.js';
import { SET, INVALIDATE, RESET, FETCH, GC, OPTIMISTIC, INVALIDATEALL, EXPIREALL, SET_RESPONSE } from '../../actionTypes.js';
export default function createReducer(controller) {
return function reducer(state, action) {
if (!state) state = initialState;
switch (action.type) {
case GC:
// inline deletes are fine as these should have 0 refcounts
action.entities.forEach(({
key,
pk
}) => {
var _entities$key, _entityMeta$key;
(_entities$key = state.entities[key]) == null || delete _entities$key[pk];
(_entityMeta$key = state.entityMeta[key]) == null || delete _entityMeta$key[pk];
});
action.endpoints.forEach(fetchKey => {
delete state.endpoints[fetchKey];
delete state.meta[fetchKey];
});
return state;
case FETCH:
return fetchReducer(state, action);
case OPTIMISTIC:
// eslint-disable-next-line no-fallthrough
case SET_RESPONSE:
return setResponseReducer(state, action, controller);
case SET:
return setReducer(state, action, controller);
case INVALIDATEALL:
case INVALIDATE:
return invalidateReducer(state, action);
case EXPIREALL:
return expireReducer(state, action);
case RESET:
return {
...initialState,
lastReset: action.date
};
default:
// A reducer must always return a valid state.
// Alternatively you can throw an error if an invalid action is dispatched.
return state;
}
};
}
export const initialState = {
entities: {},
endpoints: {},
indexes: {},
meta: {},
entityMeta: {},
optimistic: [],
lastReset: 0
};
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