@typescript-tea/core - npm Package Compare versions

Comparing version 0.5.1 to 0.6.0

CHANGELOG.md

@@ -8,4 +8,10 @@ # Change Log
 
-## [Unreleased](https://github.com/typescript-tea/core/compare/v0.5.1...master)
+## [Unreleased](https://github.com/typescript-tea/core/compare/v0.6.0...master)
 
+## [0.6.0](https://github.com/typescript-tea/core/compare/v0.5.1...0.6.0) - 2022-07-05
+
+### Added
+
+- Do not call view()/render() when state has not changed (#14)
+
 ## [0.5.1](https://github.com/typescript-tea/core/compare/v0.5.0...0.5.1) - 2021-05-23
@@ -12,0 +18,0 @@

dist/core.js

@@ -1,2 +0,2 @@
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dist/core.m.js

@@ -1,2 +0,2 @@
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dist/core.modern.js

@@ -1,2 +0,2 @@
-function r(r){var n=function(r){return Object.fromEntries(r.map(function(r){return[r.home,r]}))}(r);return function(r){var t=n[r];if(!t)throw new Error("Could not find effect manager '"+r+"'. Make sure it was passed to the runtime.");return t}}function n(r){return{home:"__internal",type:"Batched",list:r.filter(function(r){return void 0!==r})}}function t(r,n){return void 0===n?void 0:{home:"__internal",type:"Mapped",actionMapper:r,original:n}}function e(r,n,t,o,i){if(void 0===i&&(i=void 0),"__internal"===o.home){var a=o;switch(a.type){case"Batched":return void a.list.flatMap(function(o){return e(r,n,t,o,i)});case"Mapped":return void e(r,n,t,a.original,i?function(r){return i(a.actionMapper(r))}:a.actionMapper);default:throw new Error("Invalid result type "+a)}}else{var u=r(o.home);n[o.home]||(n[o.home]={cmds:[],subs:[]}),(t?n[o.home].cmds:n[o.home].subs).push(i?(t?u.mapCmd:u.mapSub)(i,o):o)}}var o={__proto__:null,run:function(n,t,o,i){void 0===i&&(i=[]);var a,u=r(i),f=n.update,c=n.view,s=n.subscriptions,l={},p=[],v=!1,h=!1,d=[];function m(){if(v&&!h){for(h=!0;d.length>0;){var r=d.shift();r.dispatch(r.action)}h=!1}}function _(r){v&&k(f(r,a))}var b=function(r){return function(n){w(function(r){return function(n){if(v){var t=u(r),e=b(r);l[r]=t.onSelfAction(y,e,n,l[r])}}}(r),n)}},y=function(r){w(_,r)};function w(r,n){v&&(d.push({dispatch:r,action:n}),m())}function k(r){a=r[0];var n=r[1],t=s&&s(a),f={};n&&e(u,f,!0,n),t&&e(u,f,!1,t);var p=i,v=Array.isArray(p),h=0;for(p=v?p:p[Symbol.iterator]();;){var d,m;if(v){if(h>=p.length)break;m=p[h++]}else{if((h=p.next()).done)break;m=h.value}var _=m.home,w=null!=(d=f[_])?d:{cmds:[],subs:[]},k=w.cmds,g=w.subs,E=u(_);l[_]=E.onEffects(y,b(_),k,g,l[_])}o(c({state:a,dispatch:y}))}return function(){var r=i,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}p.push(e.setup(y,b(e.home)))}}(),v=!0,k(n.init(t)),m(),function(){v&&(v=!1,function(){var r=p,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}e()}}())}}},i=new Map;function a(r){return{type:"Ok",value:r}}function u(r){return{type:"Err",error:r}}var f=o,c={__proto__:null,map:function(r,n){var t=i.get(n),e=t&&t.get(r);if(e)return e;var o=function(t){return n(r(t))};return t||(t=new Map,i.set(n,t)),t.set(r,o),o}},s={__proto__:null,batch:function(r){return n(r)},map:function(r,n){return t(r,n)}},l={__proto__:null,batch:function(r){return n(r)},map:function(r,n){return t(r,n)}},p={__proto__:null,Ok:a,Err:u,mapError:function(r,n){switch(n.type){case"Ok":return a(n.value);case"Err":return u(r(n.error));default:throw new Error("Invalid result type "+n)}}};export{s as Cmd,c as Dispatch,f as Program,p as Result,l as Sub,r as createGetEffectManager};
+function r(r){var n=function(r){return Object.fromEntries(r.map(function(r){return[r.home,r]}))}(r);return function(r){var t=n[r];if(!t)throw new Error("Could not find effect manager '"+r+"'. Make sure it was passed to the runtime.");return t}}function n(r){return{home:"__internal",type:"Batched",list:r.filter(function(r){return void 0!==r})}}function t(r,n){return void 0===n?void 0:{home:"__internal",type:"Mapped",actionMapper:r,original:n}}function e(r,n,t,o,i){if(void 0===i&&(i=void 0),"__internal"===o.home){var a=o;switch(a.type){case"Batched":return void a.list.flatMap(function(o){return e(r,n,t,o,i)});case"Mapped":return void e(r,n,t,a.original,i?function(r){return i(a.actionMapper(r))}:a.actionMapper);default:throw new Error("Invalid result type "+a)}}else{var u=r(o.home);n[o.home]||(n[o.home]={cmds:[],subs:[]}),(t?n[o.home].cmds:n[o.home].subs).push(i?(t?u.mapCmd:u.mapSub)(i,o):o)}}var o={__proto__:null,run:function(n,t,o,i){void 0===i&&(i=[]);var a,u=r(i),f=n.update,c=n.view,s=n.subscriptions,l={},p=[],v=!1,h=!1,d=[],m={};function _(){if(v&&!h){for(h=!0;d.length>0;){var r=d.shift();r.dispatch(r.action)}h=!1}}function b(r){v&&g(f(r,a))}var y=function(r){return function(n){k(function(r){return function(n){if(v){var t=u(r),e=y(r);l[r]=t.onSelfAction(w,e,n,l[r])}}}(r),n)}},w=function(r){k(b,r)};function k(r,n){v&&(d.push({dispatch:r,action:n}),_())}function g(r){a=r[0];var n=r[1],t=s&&s(a),f={};n&&e(u,f,!0,n),t&&e(u,f,!1,t);var p=i,v=Array.isArray(p),h=0;for(p=v?p:p[Symbol.iterator]();;){var d,_;if(v){if(h>=p.length)break;_=p[h++]}else{if((h=p.next()).done)break;_=h.value}var b=_.home,k=null!=(d=f[b])?d:{cmds:[],subs:[]},g=k.cmds,E=k.subs,M=u(b);l[b]=M.onEffects(w,y(b),g,E,l[b])}a!==m&&(m=a,o(c({state:a,dispatch:w})))}return function(){var r=i,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}p.push(e.setup(w,y(e.home)))}}(),v=!0,g(n.init(t)),_(),function(){v&&(v=!1,function(){var r=p,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}e()}}())}}},i=new Map;function a(r){return{type:"Ok",value:r}}function u(r){return{type:"Err",error:r}}var f=o,c={__proto__:null,map:function(r,n){var t=i.get(n),e=t&&t.get(r);if(e)return e;var o=function(t){return n(r(t))};return t||(t=new Map,i.set(n,t)),t.set(r,o),o}},s={__proto__:null,batch:function(r){return n(r)},map:function(r,n){return t(r,n)}},l={__proto__:null,batch:function(r){return n(r)},map:function(r,n){return t(r,n)}},p={__proto__:null,Ok:a,Err:u,mapError:function(r,n){switch(n.type){case"Ok":return a(n.value);case"Err":return u(r(n.error));default:throw new Error("Invalid result type "+n)}}};export{s as Cmd,c as Dispatch,f as Program,p as Result,l as Sub,r as createGetEffectManager};
 //# sourceMappingURL=core.modern.js.map

dist/core.umd.js

@@ -1,2 +0,2 @@
-!function(r,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((r=r||self).core={})}(this,function(r){function n(r){var n=function(r){return Object.fromEntries(r.map(function(r){return[r.home,r]}))}(r);return function(r){var t=n[r];if(!t)throw new Error("Could not find effect manager '"+r+"'. Make sure it was passed to the runtime.");return t}}function t(r){return{home:"__internal",type:"Batched",list:r.filter(function(r){return void 0!==r})}}function e(r,n){return void 0===n?void 0:{home:"__internal",type:"Mapped",actionMapper:r,original:n}}function o(r,n,t,e,i){if(void 0===i&&(i=void 0),"__internal"===e.home){var a=e;switch(a.type){case"Batched":return void a.list.flatMap(function(e){return o(r,n,t,e,i)});case"Mapped":return void o(r,n,t,a.original,i?function(r){return i(a.actionMapper(r))}:a.actionMapper);default:throw new Error("Invalid result type "+a)}}else{var u=r(e.home);n[e.home]||(n[e.home]={cmds:[],subs:[]}),(t?n[e.home].cmds:n[e.home].subs).push(i?(t?u.mapCmd:u.mapSub)(i,e):e)}}var i={__proto__:null,run:function(r,t,e,i){void 0===i&&(i=[]);var a,u=n(i),f=r.update,c=r.view,s=r.subscriptions,p={},l=[],d=!1,v=!1,h=[];function m(){if(d&&!v){for(v=!0;h.length>0;){var r=h.shift();r.dispatch(r.action)}v=!1}}function _(r){d&&g(f(r,a))}var b=function(r){return function(n){w(function(r){return function(n){if(d){var t=u(r),e=b(r);p[r]=t.onSelfAction(y,e,n,p[r])}}}(r),n)}},y=function(r){w(_,r)};function w(r,n){d&&(h.push({dispatch:r,action:n}),m())}function g(r){a=r[0];var n=r[1],t=s&&s(a),f={};n&&o(u,f,!0,n),t&&o(u,f,!1,t);var l=i,d=Array.isArray(l),v=0;for(l=d?l:l[Symbol.iterator]();;){var h,m;if(d){if(v>=l.length)break;m=l[v++]}else{if((v=l.next()).done)break;m=v.value}var _=m.home,w=null!=(h=f[_])?h:{cmds:[],subs:[]},g=w.cmds,k=w.subs,E=u(_);p[_]=E.onEffects(y,b(_),g,k,p[_])}e(c({state:a,dispatch:y}))}return function(){var r=i,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}l.push(e.setup(y,b(e.home)))}}(),d=!0,g(r.init(t)),m(),function(){d&&(d=!1,function(){var r=l,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}e()}}())}}},a=new Map;function u(r){return{type:"Ok",value:r}}function f(r){return{type:"Err",error:r}}var c=i,s={__proto__:null,map:function(r,n){var t=a.get(n),e=t&&t.get(r);if(e)return e;var o=function(t){return n(r(t))};return t||(t=new Map,a.set(n,t)),t.set(r,o),o}},p={__proto__:null,batch:function(r){return t(r)},map:function(r,n){return e(r,n)}},l={__proto__:null,Ok:u,Err:f,mapError:function(r,n){switch(n.type){case"Ok":return u(n.value);case"Err":return f(r(n.error));default:throw new Error("Invalid result type "+n)}}};r.Cmd={__proto__:null,batch:function(r){return t(r)},map:function(r,n){return e(r,n)}},r.Dispatch=s,r.Program=c,r.Result=l,r.Sub=p,r.createGetEffectManager=n});
+!function(r,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((r=r||self).core={})}(this,function(r){function n(r){var n=function(r){return Object.fromEntries(r.map(function(r){return[r.home,r]}))}(r);return function(r){var t=n[r];if(!t)throw new Error("Could not find effect manager '"+r+"'. Make sure it was passed to the runtime.");return t}}function t(r){return{home:"__internal",type:"Batched",list:r.filter(function(r){return void 0!==r})}}function e(r,n){return void 0===n?void 0:{home:"__internal",type:"Mapped",actionMapper:r,original:n}}function o(r,n,t,e,i){if(void 0===i&&(i=void 0),"__internal"===e.home){var a=e;switch(a.type){case"Batched":return void a.list.flatMap(function(e){return o(r,n,t,e,i)});case"Mapped":return void o(r,n,t,a.original,i?function(r){return i(a.actionMapper(r))}:a.actionMapper);default:throw new Error("Invalid result type "+a)}}else{var u=r(e.home);n[e.home]||(n[e.home]={cmds:[],subs:[]}),(t?n[e.home].cmds:n[e.home].subs).push(i?(t?u.mapCmd:u.mapSub)(i,e):e)}}var i={__proto__:null,run:function(r,t,e,i){void 0===i&&(i=[]);var a,u=n(i),f=r.update,c=r.view,s=r.subscriptions,p={},l=[],d=!1,v=!1,h=[],m={};function _(){if(d&&!v){for(v=!0;h.length>0;){var r=h.shift();r.dispatch(r.action)}v=!1}}function b(r){d&&k(f(r,a))}var y=function(r){return function(n){g(function(r){return function(n){if(d){var t=u(r),e=y(r);p[r]=t.onSelfAction(w,e,n,p[r])}}}(r),n)}},w=function(r){g(b,r)};function g(r,n){d&&(h.push({dispatch:r,action:n}),_())}function k(r){a=r[0];var n=r[1],t=s&&s(a),f={};n&&o(u,f,!0,n),t&&o(u,f,!1,t);var l=i,d=Array.isArray(l),v=0;for(l=d?l:l[Symbol.iterator]();;){var h,_;if(d){if(v>=l.length)break;_=l[v++]}else{if((v=l.next()).done)break;_=v.value}var b=_.home,g=null!=(h=f[b])?h:{cmds:[],subs:[]},k=g.cmds,E=g.subs,M=u(b);p[b]=M.onEffects(w,y(b),k,E,p[b])}a!==m&&(m=a,e(c({state:a,dispatch:w})))}return function(){var r=i,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}l.push(e.setup(w,y(e.home)))}}(),d=!0,k(r.init(t)),_(),function(){d&&(d=!1,function(){var r=l,n=Array.isArray(r),t=0;for(r=n?r:r[Symbol.iterator]();;){var e;if(n){if(t>=r.length)break;e=r[t++]}else{if((t=r.next()).done)break;e=t.value}e()}}())}}},a=new Map;function u(r){return{type:"Ok",value:r}}function f(r){return{type:"Err",error:r}}var c=i,s={__proto__:null,map:function(r,n){var t=a.get(n),e=t&&t.get(r);if(e)return e;var o=function(t){return n(r(t))};return t||(t=new Map,a.set(n,t)),t.set(r,o),o}},p={__proto__:null,batch:function(r){return t(r)},map:function(r,n){return e(r,n)}},l={__proto__:null,Ok:u,Err:f,mapError:function(r,n){switch(n.type){case"Ok":return u(n.value);case"Err":return f(r(n.error));default:throw new Error("Invalid result type "+n)}}};r.Cmd={__proto__:null,batch:function(r){return t(r)},map:function(r,n){return e(r,n)}},r.Dispatch=s,r.Program=c,r.Result=l,r.Sub=p,r.createGetEffectManager=n});
 //# sourceMappingURL=core.umd.js.map

package.json

 {
   "name": "@typescript-tea/core",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "description": "The Elm Architecture for typescript",
@@ -5,0 +5,0 @@ "main": "dist/core.js",

src/__tests__/program.test.ts

@@ -76,3 +76,3 @@ /* eslint-disable functional/prefer-readonly-type */
  * onEffects must be called with undefined subscriptions becuase
- * the previous call may have had subscriptions so teh effect
+ * the previous call may have had subscriptions so the effect
  * manager must know to clear those subscriptions when undefined
@@ -103,1 +103,50 @@ * is returned from program.subscription().
 });
+
+/**
+ * If state has not changed then calling render is not useful.
+ * In some circumstances there are actions that happen that
+ * the application does not want to handle. In those cases the application
+ * returns the old state, however calling view() and render() in that case
+ * will case uncecessary overheadas it will be called with the same state as before
+ * and therefor return the same result as before sinc view must be a pure function.
+ */
+test("Do not call view/render if state has not changed", () => {
+  // Create mocks
+  const mp = createMockProgram();
+  const mr = createMockRender();
+  // Setup mocks
+  mp.init.mockImplementation(() => [1]);
+  mp.update.mockImplementation(() => [1]);
+  mp.view.mockImplementationOnce(({ state, dispatch }) => {
+    expect(state).toEqual(1);
+    dispatch("action");
+  });
+  // Run
+  run(mp, undefined, mr, []);
+  expect(mp.init).toBeCalledTimes(1);
+  expect(mp.update).toBeCalledTimes(1);
+  expect(mp.view).toBeCalledTimes(1);
+  expect(mr).toBeCalledTimes(1);
+});
+
+/**
+ * When the state changes, view()/render() should be called.
+ */
+test("Do call view/render if state has changed", () => {
+  // Create mocks
+  const mp = createMockProgram();
+  const mr = createMockRender();
+  // Setup mocks
+  mp.init.mockImplementation(() => [1]);
+  mp.update.mockImplementation(() => [2]);
+  mp.view.mockImplementationOnce(({ state, dispatch }) => {
+    expect(state).toEqual(1);
+    dispatch("action");
+  });
+  // Run
+  run(mp, undefined, mr, []);
+  expect(mp.init).toBeCalledTimes(1);
+  expect(mp.update).toBeCalledTimes(1);
+  expect(mp.view).toBeCalledTimes(2);
+  expect(mr).toBeCalledTimes(2);
+});

src/program.ts

@@ -44,2 +44,4 @@ import { Cmd } from "./cmd";
   }> = [];
+  // Init to an object that the appliction has no reference to so intial change always runs
+  let prevState = {};
 
@@ -116,3 +118,6 @@ function processActions(): void {
     }
-    render(view({ state, dispatch: enqueueProgramAction }));
+    if (state !== prevState) {
+      prevState = state;
+      render(view({ state, dispatch: enqueueProgramAction }));
+    }
   }
@@ -119,0 +124,0 @@

No alert changes

Improved metrics

Total package byte prevSize

171752

increased by1.77%

Lines of code

1116

increased by4.89%

No dependency changes