diff --git a/dist/um.js b/dist/um.js
index f8ce1ae..fe24b87 100644
--- a/dist/um.js
+++ b/dist/um.js
@@ -43,10 +43,10 @@ function h(tag, ...args) {
  */
 function app(opts) {
     // initial setup
-    let state   = check(opts.state, {});
-    let view    = check(opts.view, () => null);
-    let actions = check(opts.actions, {});
-    let mount   = opts.mount || "body";
+    const state   = check(opts.state, {});
+    const view    = check(opts.view, () => null);
+    const actions = check(opts.actions, {});
+    const mount   = opts.mount || "body";
 
     /**
      * simple type validation check
diff --git a/dist/um.min.js b/dist/um.min.js
index 9213694..f3ad342 100644
--- a/dist/um.min.js
+++ b/dist/um.min.js
@@ -1,3 +1,3 @@
-/*! Um v:0.4.0 | MIT LICENSE | https://github.com/n2geoff/um */
-function h(tag,...args){const el=document.createElement(tag);return args.forEach((arg=>{["boolean","string","number"].includes(typeof arg)?el.appendChild(document.createTextNode(arg)):Array.isArray(arg)?el.append(...arg):Object.assign(el,arg)})),el}function app(opts){let state=check(opts.state,{}),view=check(opts.view,(()=>null)),actions=check(opts.actions,{}),mount=opts.mount||"body";function check(value,type){return typeof value==typeof type?value:type}const update=()=>{document.querySelector(mount).replaceChildren(view(state,actions))};return opts.view&&mount&&function(data,actions){Object.entries(actions).forEach((([name,action])=>{"function"==typeof action&&(actions[name]=(...args)=>{Object.assign(state,action(data,...args)),update()})})),update()}(state,actions),{state:state,update:update}}export{app,h};
+/*! Um v:0.4.1 | MIT LICENSE | https://github.com/n2geoff/um */
+function h(tag,...args){const el=document.createElement(tag);return args.forEach((arg=>{["boolean","string","number"].includes(typeof arg)?el.appendChild(document.createTextNode(arg)):Array.isArray(arg)?el.append(...arg):Object.assign(el,arg)})),el}function app(opts){const state=check(opts.state,{}),view=check(opts.view,(()=>null)),actions=check(opts.actions,{}),mount=opts.mount||"body";function check(value,type){return typeof value==typeof type?value:type}const update=()=>{document.querySelector(mount).replaceChildren(view(state,actions))};return opts.view&&mount&&function(data,actions){Object.entries(actions).forEach((([name,action])=>{"function"==typeof action&&(actions[name]=(...args)=>{Object.assign(state,action(data,...args)),update()})})),update()}(state,actions),{state:state,update:update}}export{app,h};
 //# sourceMappingURL=true
\ No newline at end of file
diff --git a/dist/um.min.js.map b/dist/um.min.js.map
index feef889..1a8cd49 100644
--- a/dist/um.min.js.map
+++ b/dist/um.min.js.map
@@ -1 +1 @@
-{"version":3,"names":["h","tag","args","el","document","createElement","forEach","arg","includes","appendChild","createTextNode","Array","isArray","append","Object","assign","app","opts","state","check","view","actions","mount","value","type","update","querySelector","replaceChildren","data","entries","name","action","dispatch"],"sources":["dist/um.js"],"mappings":"AAUA,SAASA,EAAEC,OAAQC,MACf,MAAMC,GAAKC,SAASC,cAAcJ,KAelC,OAVAC,KAAKI,SAASC,MAFc,CAAC,UAAW,SAAU,UAAUC,gBAG3CD,KACTJ,GAAGM,YAAYL,SAASM,eAAeH,MAChCI,MAAMC,QAAQL,KACrBJ,GAAGU,UAAUN,KAEbO,OAAOC,OAAOZ,GAAII,IACtB,IAGGJ,EACX,CAgBA,SAASa,IAAIC,MAET,IAAIC,MAAUC,MAAMF,KAAKC,MAAO,CAAC,GAC7BE,KAAUD,MAAMF,KAAKG,MAAM,IAAM,OACjCC,QAAUF,MAAMF,KAAKI,QAAS,CAAC,GAC/BC,MAAUL,KAAKK,OAAS,OAS5B,SAASH,MAAMI,MAAOC,MAClB,cAAcD,cAAiBC,KAAOD,MAAQC,IAClD,CAyBA,MAAMC,OAAS,KACXrB,SAASsB,cAAcJ,OAAOK,gBAAgBP,KAAKF,MAAOG,SAAS,EAQvE,OAJIJ,KAAKG,MAAQE,OAtBjB,SAAkBM,KAAMP,SACpBP,OAAOe,QAAQR,SAASf,SAAQ,EAAEwB,KAAMC,WACd,mBAAXA,SACPV,QAAQS,MAAQ,IAAI5B,QAEhBY,OAAOC,OAAOG,MAAOa,OAAOH,QAAS1B,OAGrCuB,QAAQ,EAEhB,IAGJA,QACJ,CASIO,CAASd,MAAOG,SAGb,CAACH,YAAMO,cAClB,QAEST,IAAKhB","ignoreList":[]}
\ No newline at end of file
+{"version":3,"names":["h","tag","args","el","document","createElement","forEach","arg","includes","appendChild","createTextNode","Array","isArray","append","Object","assign","app","opts","state","check","view","actions","mount","value","type","update","querySelector","replaceChildren","data","entries","name","action","dispatch"],"sources":["dist/um.js"],"mappings":"AAUA,SAASA,EAAEC,OAAQC,MACf,MAAMC,GAAKC,SAASC,cAAcJ,KAelC,OAVAC,KAAKI,SAASC,MAFc,CAAC,UAAW,SAAU,UAAUC,gBAG3CD,KACTJ,GAAGM,YAAYL,SAASM,eAAeH,MAChCI,MAAMC,QAAQL,KACrBJ,GAAGU,UAAUN,KAEbO,OAAOC,OAAOZ,GAAII,IACtB,IAGGJ,EACX,CAgBA,SAASa,IAAIC,MAET,MAAMC,MAAUC,MAAMF,KAAKC,MAAO,CAAC,GAC7BE,KAAUD,MAAMF,KAAKG,MAAM,IAAM,OACjCC,QAAUF,MAAMF,KAAKI,QAAS,CAAC,GAC/BC,MAAUL,KAAKK,OAAS,OAS9B,SAASH,MAAMI,MAAOC,MAClB,cAAcD,cAAiBC,KAAOD,MAAQC,IAClD,CAyBA,MAAMC,OAAS,KACXrB,SAASsB,cAAcJ,OAAOK,gBAAgBP,KAAKF,MAAOG,SAAS,EAQvE,OAJIJ,KAAKG,MAAQE,OAtBjB,SAAkBM,KAAMP,SACpBP,OAAOe,QAAQR,SAASf,SAAQ,EAAEwB,KAAMC,WACd,mBAAXA,SACPV,QAAQS,MAAQ,IAAI5B,QAEhBY,OAAOC,OAAOG,MAAOa,OAAOH,QAAS1B,OAGrCuB,QAAQ,EAEhB,IAGJA,QACJ,CASIO,CAASd,MAAOG,SAGb,CAACH,YAAMO,cAClB,QAEST,IAAKhB","ignoreList":[]}
\ No newline at end of file