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Commit30d037d

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feat(redux): dispatcher with middleware (#97)
* chore(npm): update no-mix-dearu-desumasu@3* feat(redux): add dispatcher with middleware* test(redux): add logger middleware test
1 parentb5f4779 commit30d037d

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7 files changed

+117
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lines changed

7 files changed

+117
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‎.textlintrc

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@@ -21,7 +21,8 @@
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"no-mix-dearu-desumasu": {
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"preferInHeader": "",
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"preferInBody": "ですます",
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"preferInList": "である"
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"preferInList": "である",
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"strict": true
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},
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"prh": {
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"rulePaths": [

‎README.md

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@@ -60,3 +60,4 @@ Pull Request、コミットのやりかたなどが書かれています。
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コードはMITライセンスで利用できます。
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文章は[CC BY-NC 4.0](http://creativecommons.org/licenses/by-nc/4.0/"CC BY-NC 4.0")で利用できます。
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‎package.json

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@@ -71,7 +71,7 @@
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"textlint-rule-no-doubled-conjunctive-particle-ga":"^1.0.2",
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"textlint-rule-no-doubled-joshi":"^3.2.0",
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"textlint-rule-no-dropping-the-ra":"^1.0.2",
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"textlint-rule-no-mix-dearu-desumasu":"^2.2.1",
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"textlint-rule-no-mix-dearu-desumasu":"^3.0.0",
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"textlint-rule-no-nfd":"^1.0.1",
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"textlint-rule-no-start-duplicated-conjunction":"^1.0.7",
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"textlint-rule-preset-jtf-style":"^2.0.0",

‎src/redux/Dispatcher.js

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// LICENSE : MIT
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"use strict";
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constassert=require("assert");
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constEventEmitter=require("events");
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exportconstON_DISPATCH="__ON_DISPATCH__";
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/**
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* payload The payload object that must have `type` property.
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*@typedef {Object} DispatcherPayload
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*@property {String} type The event type to dispatch.
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*@public
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*/
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exportdefaultclassDispatcherextendsEventEmitter{
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/**
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* add onAction handler and return unbind function
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*@param {function(DispatcherPayload)} payloadHandler
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*@returns {Function} call the function and release handler
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*@public
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*/
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onDispatch(payloadHandler){
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this.on(ON_DISPATCH,payloadHandler);
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returnthis.removeListener.bind(this,ON_DISPATCH,payloadHandler);
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}
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/**
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* dispatch action object.
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* StoreGroups receive this action and reduce state.
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*@param {DispatcherPayload} payload
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*@public
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*/
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dispatch(payload){
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assert(payload!==undefined&&payload!==null,"payload should not null or undefined");
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assert(typeofpayload.type==="string","payload's type should be string");
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this.emit(ON_DISPATCH,payload);
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}
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}

‎src/redux/apply-middleware.js

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// LICENSE : MIT
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"use strict";
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// core -
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// next - next function
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// action - action object
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constapplyMiddlewares=(...middlewares)=>{
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returnmiddlewareAPI=>{
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constoriginalDispatch=middlewareAPI.dispatch.bind(middlewareAPI);
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constwrapMiddleware=middlewares.map(middleware=>{
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returnmiddleware(middlewareAPI);
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});
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// apply middleware order by first
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constlast=wrapMiddleware[wrapMiddleware.length-1];
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constrest=wrapMiddleware.slice(0,-1);
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constroundDispatch=rest.reduceRight((oneMiddle,middleware)=>{
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returnmiddleware(oneMiddle);
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},last);
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returnroundDispatch(originalDispatch);
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};
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};
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exportdefaultapplyMiddlewares;

‎test/redux/apply-middleware-test.js

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// LICENSE : MIT
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"use strict";
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constassert=require("power-assert");
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importapplyMiddlewarefrom"../../src/redux/apply-middleware";
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importDispatcherfrom"../../src/redux/Dispatcher";
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importtimestampfrom"../../src/redux/timestamp";
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importcreateLoggerfrom"../../src/redux/logger";
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describe("middleware",function(){
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it("could apply logger middleware",function(){
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constdispatcher=newDispatcher();
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constlogs=[];
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constcon={
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log(message){
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logs.push(message);
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}
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};
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constmiddleware=createLogger({
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logger:con
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});
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// state
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conststate={};
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constmiddlewareAPI={
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getState(){
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returnstate;
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},
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dispatch(action){
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dispatcher.dispatch(action);
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}
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};
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constdispatchWithMiddleware=applyMiddleware(middleware)(middlewareAPI);
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constaction={type:"FOO"};
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// then
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dispatcher.onDispatch(payload=>{
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if(payload.type==="FOO"){
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state.isUpdated=true;
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}
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});
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// when
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dispatchWithMiddleware(action);
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assert.deepEqual(logs,[action,state]);
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});
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it("could apply timestamp middleware",function(done){
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constdispatcher=newDispatcher();
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constdispatchWithMiddleware=applyMiddleware(timestamp)(dispatcher);
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constaction={type:"FOO"};
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// then
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dispatcher.onDispatch(payload=>{
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assert(typeofpayload.timeStamp==="number");
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done();
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});
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// when
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dispatchWithMiddleware(action);
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});
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});

‎test/redux/timestamp-test.js

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@@ -13,7 +13,7 @@ const reducer = (state = initialState, action) => {
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}
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};
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describe("logger-test",function(){
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describe("timestamp-test",function(){
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letstore,dispatch;
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beforeEach(()=>{
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store=applyMiddleware(timestamp)(createStore)(reducer);

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