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syncEnhancer.js
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syncEnhancer.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const isEmpty = require("lodash/isEmpty");
const includes = require("lodash/includes");
const yeast = require("yeast");
const hydration_1 = require("./hydration");
function syncEnhancer({ receive$, transmit$, predicate = a => true, hydrationMap = { FULL_STATE: '' }, hydrateOn = { type: undefined }, isMaster = false, createUUID = yeast }) {
return (createStore) => (reducer, preloadedState) => {
// Each enhancer in use gets it's own uuid
// Move below statement to above return statement to instead create
// uuid per instantiated enhancer (which could be used multiple places)
const uuid = createUUID();
const _predicate = (a) => {
const ret = predicate(a) || includes(hydration_1.hydrationActionTypes, a.type);
return ret;
};
// TRANSMIT
const transmit = (action) => {
if (!action.origin) {
if (_predicate(action)) {
action.origin = uuid;
transmit$.next(action);
}
}
};
// STORE
const store = createStore(isMaster ? reducer : hydration_1.hydratable(reducer, hydrationMap), preloadedState);
const dispatch = (action) => {
store.dispatch(action);
// If we need to extend functionality more,
// a middleware approach with chained functionality could used here
if (isMaster && action.type === hydration_1.hydrationActionTypes.HYDRATION_REQ) {
const hydrationReplyAction = hydration_1.hydrationReply(store.getState(), hydrationMap);
store.dispatch(hydrationReplyAction);
transmit(hydrationReplyAction);
}
else if (action.type === hydrateOn.type) {
transmit(hydration_1.hydrationRequest());
}
else {
transmit(action);
}
};
// RECEIVE
const receive = (action) => {
if (!isEmpty(action.origin) && action.origin !== uuid) {
if (_predicate(action)) {
dispatch(action);
}
}
};
const receiveError = (err) => { }; //console.log("syncEnhancer received error: "); console.log(err) }
const receiveComplete = () => { }; //console.log("syncEnhancer received complete") }
receive$.subscribe(receive, receiveError, receiveComplete);
return Object.assign({}, store, { dispatch });
};
}
exports.default = syncEnhancer;