From 99760cf557e8bf3cf510af69890e08c2be5f82ed Mon Sep 17 00:00:00 2001
From: siyuniu-ms <123212536+siyuniu-ms@users.noreply.github.com>
Date: Mon, 17 Jun 2024 14:14:14 -0700
Subject: [PATCH] [main] create snippet mini loader (#2339)

---
 AISKU/Tests/Manual/testVersionConflict.html   | 38 +++++------
 README.md                                     |  4 +-
 .../Tests/Unit/src/SnippetTests.ts            |  2 +-
 .../src/snippet-config.js                     |  1 +
 .../src/snippet.ts                            | 67 +++++++++++++++++--
 .../src/type.ts                               |  1 +
 6 files changed, 84 insertions(+), 29 deletions(-)
diff --git a/AISKU/Tests/Manual/testVersionConflict.html b/AISKU/Tests/Manual/testVersionConflict.html
index f055cc11d..2b7f4ca0e 100644
--- a/AISKU/Tests/Manual/testVersionConflict.html
+++ b/AISKU/Tests/Manual/testVersionConflict.html
@@ -1,35 +1,33 @@
 <!DOCTYPE html>
-<meta
-  http-equiv="Content-Security-Policy"
-  content="default-src 'self' https://dc.services.visualstudio.com; script-src 'nonce-EDNnf03nceIOfn39fn3e9h3sdfa' https://js.monitor.azure.com ; img-src https://*; child-src 'none';" />
+
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <html lang="en">
   <head>
     <meta charset="utf-8">
     <title>AISKU Sample</title>
     <link rel="stylesheet" href="style/style.css"/>
-<!-- <script src="./ai3.test.js"></script> -->
-<!-- <script src="./ai2.test.js"></script> -->
-<!-- <script src="./ai3.test.js"></script> -->
-<script type="text/javascript" nonce = "EDNnf03nceIOfn39fn3e9h3sdfa">
-  !(function (cfg){function e(){cfg.onInit&&cfg.onInit(i)}var S,u,D,t,n,i,C=window,x=document,w=C.location,I="script",b="ingestionendpoint",E="disableExceptionTracking",A="ai.device.";"instrumentationKey"[S="toLowerCase"](),u="crossOrigin",D="POST",t="appInsightsSDK",n=cfg.name||"appInsights",(cfg.name||C[t])&&(C[t]=n),i=C[n]||function(l){var d=!1,g=!1,f={initialize:!0,queue:[],sv:"7",version:2,config:l};function m(e,t){var n={},i="Browser";function a(e){e=""+e;return 1===e.length?"0"+e:e}return n[A+"id"]=i[S](),n[A+"type"]=i,n["ai.operation.name"]=w&&w.pathname||"_unknown_",n["ai.internal.sdkVersion"]="javascript:snippet_"+(f.sv||f.version),{time:(i=new Date).getUTCFullYear()+"-"+a(1+i.getUTCMonth())+"-"+a(i.getUTCDate())+"T"+a(i.getUTCHours())+":"+a(i.getUTCMinutes())+":"+a(i.getUTCSeconds())+"."+(i.getUTCMilliseconds()/1e3).toFixed(3).slice(2,5)+"Z",iKey:e,name:"Microsoft.ApplicationInsights."+e.replace(/-/g,"")+"."+t,sampleRate:100,tags:n,data:{baseData:{ver:2}},ver:4,seq:"1",aiDataContract:undefined}}var h=-1,v=0,y=["js.monitor.azure.com","js.cdn.applicationinsights.io","js.cdn.monitor.azure.com","js0.cdn.applicationinsights.io","js0.cdn.monitor.azure.com","js2.cdn.applicationinsights.io","js2.cdn.monitor.azure.com","az416426.vo.msecnd.net"],k=l.url||cfg.src;if(k){if((n=navigator)&&(~(n=(n.userAgent||"").toLowerCase()).indexOf("msie")||~n.indexOf("trident/"))&&~k.indexOf("ai.3")&&(k=k.replace(/(\/)(ai\.3\.)([^\d]*)$/,function(e,t,n){return t+"ai.2"+n})),!1!==cfg.cr)for(var e=0;e<y.length;e++)if(0<k.indexOf(y[e])){h=e;break}var i=function(e){var a,t,n,i,o,r,s,c,p,u;f.queue=[],g||(0<=h&&v+1<y.length?(a=(h+v+1)%y.length,T(k.replace(/^(.*\/\/)([\w\.]*)(\/.*)$/,function(e,t,n,i){return t+y[a]+i})),v+=1):(d=g=!0,o=k,c=(p=function(){var e,t={},n=l.connectionString;if(n)for(var i=n.split(";"),a=0;a<i.length;a++){var o=i[a].split("=");2===o.length&&(t[o[0][S]()]=o[1])}return t[b]||(e=(n=t.endpointsuffix)?t.location:null,t[b]="https://"+(e?e+".":"")+"dc."+(n||"services.visualstudio.com")),t}()).instrumentationkey||l.instrumentationKey||"",p=(p=p[b])?p+"/v2/track":l.endpointUrl,(u=[]).push((t="SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details)",n=o,r=p,(s=(i=m(c,"Exception")).data).baseType="ExceptionData",s.baseData.exceptions=[{typeName:"SDKLoadFailed",message:t.replace(/\./g,"-"),hasFullStack:!1,stack:t+"\nSnippet failed to load ["+n+"] -- Telemetry is disabled\nHelp Link: https://go.microsoft.com/fwlink/?linkid=2128109\nHost: "+(w&&w.pathname||"_unknown_")+"\nEndpoint: "+r,parsedStack:[]}],i)),u.push((s=o,t=p,(r=(n=m(c,"Message")).data).baseType="MessageData",(i=r.baseData).message='AI (Internal): 99 message:"'+("SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details) ("+s+")").replace(/\"/g,"")+'"',i.properties={endpoint:t},n)),o=u,c=p,JSON&&((r=C.fetch)&&!cfg.useXhr?r(c,{method:D,body:JSON.stringify(o),mode:"cors"}):XMLHttpRequest&&((s=new XMLHttpRequest).open(D,c),s.setRequestHeader("Content-type","application/json"),s.send(JSON.stringify(o))))))},a=function(e,t){g||setTimeout(function(){!t&&f.core||i()},500),d=!1},T=function(e){var n=x.createElement(I),e=(n.src=e,cfg[u]);return!e&&""!==e||"undefined"==n[u]||(n[u]=e),n.onload=a,n.onerror=i,n.onreadystatechange=function(e,t){"loaded"!==n.readyState&&"complete"!==n.readyState||a(0,t)},cfg.ld&&cfg.ld<0?x.getElementsByTagName("head")[0].appendChild(n):setTimeout(function(){x.getElementsByTagName(I)[0].parentNode.appendChild(n)},cfg.ld||0),n};T(k)}try{f.cookie=x.cookie}catch(p){}function t(e){for(;e.length;)!function(t){f[t]=function(){var e=arguments;d||f.queue.push(function(){f[t].apply(f,e)})}}(e.pop())}var r,s,n="track",o="TrackPage",c="TrackEvent",n=(t([n+"Event",n+"PageView",n+"Exception",n+"Trace",n+"DependencyData",n+"Metric",n+"PageViewPerformance","start"+o,"stop"+o,"start"+c,"stop"+c,"addTelemetryInitializer","setAuthenticatedUserContext","clearAuthenticatedUserContext","flush"]),f.SeverityLevel={Verbose:0,Information:1,Warning:2,Error:3,Critical:4},(l.extensionConfig||{}).ApplicationInsightsAnalytics||{});return!0!==l[E]&&!0!==n[E]&&(t(["_"+(r="onerror")]),s=C[r],C[r]=function(e,t,n,i,a){var o=s&&s(e,t,n,i,a);return!0!==o&&f["_"+r]({message:e,url:t,lineNumber:n,columnNumber:i,error:a,evt:C.event}),o},l.autoExceptionInstrumented=!0),f}(cfg.cfg),(C[n]=i).queue&&0===i.queue.length?(i.queue.push(e),i.trackPageView({})):e();})({
-      src: "https://js.monitor.azure.com/scripts/b/ai.3.gbl.min.js",
-      // name: "appInsights", // Global SDK Instance name defaults to "appInsights" when not supplied
-      // ld: 0, // Defines the load delay (in ms) before attempting to load the sdk. -1 = block page load and add to head. (default) = 0ms load after timeout,
-      // useXhr: 1, // Use XHR instead of fetch to report failures (if available),
-      // dle: true, // Prevent the SDK from reporting load failure log
-      crossOrigin: "anonymous", // When supplied this will add the provided value as the cross origin attribute on the script tag
-      // onInit: null, // Once the application insights instance has loaded and initialized this callback function will be called with 1 argument -- the sdk instance (DO NOT ADD anything to the sdk.queue -- As they won't get called)
-      cfg: { // Application Insights Configuration
-          connectionString: "InstrumentationKey=88888888"
-      }
-  });
+
+    <!-- <script src="https://requirejs.org/docs/release/2.3.6/minified/require.js" type="text/javascript"></script> -->
+<script type="text/javascript">
+!(function (cfg){function e(){cfg.onInit&&cfg.onInit(n)}var x,w,D,t,E,n,C=window,O=document,b=C.location,q="script",I="ingestionendpoint",L="disableExceptionTracking",j="ai.device.";"instrumentationKey"[x="toLowerCase"](),w="crossOrigin",D="POST",t="appInsightsSDK",E=cfg.name||"appInsights",(cfg.name||C[t])&&(C[t]=E),n=C[E]||function(g){var f=!1,m=!1,h={initialize:!0,queue:[],sv:"8",version:2,config:g};function v(e,t){var n={},i="Browser";function a(e){e=""+e;return 1===e.length?"0"+e:e}return n[j+"id"]=i[x](),n[j+"type"]=i,n["ai.operation.name"]=b&&b.pathname||"_unknown_",n["ai.internal.sdkVersion"]="javascript:snippet_"+(h.sv||h.version),{time:(i=new Date).getUTCFullYear()+"-"+a(1+i.getUTCMonth())+"-"+a(i.getUTCDate())+"T"+a(i.getUTCHours())+":"+a(i.getUTCMinutes())+":"+a(i.getUTCSeconds())+"."+(i.getUTCMilliseconds()/1e3).toFixed(3).slice(2,5)+"Z",iKey:e,name:"Microsoft.ApplicationInsights."+e.replace(/-/g,"")+"."+t,sampleRate:100,tags:n,data:{baseData:{ver:2}},ver:undefined,seq:"1",aiDataContract:undefined}}var n,i,t,a,y=-1,T=0,S=["js.monitor.azure.com","js.cdn.applicationinsights.io","js.cdn.monitor.azure.com","js0.cdn.applicationinsights.io","js0.cdn.monitor.azure.com","js2.cdn.applicationinsights.io","js2.cdn.monitor.azure.com","az416426.vo.msecnd.net"],o=g.url||cfg.src,r=function(){return s(o,null)};function s(d,t){if((n=navigator)&&(~(n=(n.userAgent||"").toLowerCase()).indexOf("msie")||~n.indexOf("trident/"))&&~d.indexOf("ai.3")&&(d=d.replace(/(\/)(ai\.3\.)([^\d]*)$/,function(e,t,n){return t+"ai.2"+n})),!1!==cfg.cr)for(var e=0;e<S.length;e++)if(0<d.indexOf(S[e])){y=e;break}var n,i=function(e){var a,t,n,i,o,r,s,c,u,l;h.queue=[],m||(0<=y&&T+1<S.length?(a=(y+T+1)%S.length,p(d.replace(/^(.*\/\/)([\w\.]*)(\/.*)$/,function(e,t,n,i){return t+S[a]+i})),T+=1):(f=m=!0,s=d,!0!==cfg.dle&&(c=(t=function(){var e,t={},n=g.connectionString;if(n)for(var i=n.split(";"),a=0;a<i.length;a++){var o=i[a].split("=");2===o.length&&(t[o[0][x]()]=o[1])}return t[I]||(e=(n=t.endpointsuffix)?t.location:null,t[I]="https://"+(e?e+".":"")+"dc."+(n||"services.visualstudio.com")),t}()).instrumentationkey||g.instrumentationKey||"",t=(t=(t=t[I])&&"/"===t.slice(-1)?t.slice(0,-1):t)?t+"/v2/track":g.endpointUrl,t=g.userOverrideEndpointUrl||t,(n=[]).push((i="SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details)",o=s,u=t,(l=(r=v(c,"Exception")).data).baseType="ExceptionData",l.baseData.exceptions=[{typeName:"SDKLoadFailed",message:i.replace(/\./g,"-"),hasFullStack:!1,stack:i+"\nSnippet failed to load ["+o+"] -- Telemetry is disabled\nHelp Link: 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n=O.createElement(q),e=(n.src=e,t&&(n.integrity=t),n.setAttribute("data-ai-name",E),cfg[w]);return!e&&""!==e||"undefined"==n[w]||(n[w]=e),n.onload=a,n.onerror=i,n.onreadystatechange=function(e,t){"loaded"!==n.readyState&&"complete"!==n.readyState||a(0,t)},cfg.ld&&cfg.ld<0?O.getElementsByTagName("head")[0].appendChild(n):setTimeout(function(){O.getElementsByTagName(q)[0].parentNode.appendChild(n)},cfg.ld||0),n};p(d)}cfg.sri&&(n=o.match(/^((http[s]?:\/\/.*\/)\w+(\.\d+){1,5})\.(([\w]+\.){0,2}js)$/))&&6===n.length?(d="".concat(n[1],".integrity.json"),i="@".concat(n[4]),l=window.fetch,t=function(e){if(!e.ext||!e.ext[i]||!e.ext[i].file)throw Error("Error Loading JSON response");var t=e.ext[i].integrity||null;s(o=n[2]+e.ext[i].file,t)},l&&!cfg.useXhr?l(d,{method:"GET",mode:"cors"}).then(function(e){return e.json()["catch"](function(){return{}})}).then(t)["catch"](r):XMLHttpRequest&&((a=new XMLHttpRequest).open("GET",d),a.onreadystatechange=function(){if(a.readyState===XMLHttpRequest.DONE)if(200===a.status)try{t(JSON.parse(a.responseText))}catch(e){r()}else r()},a.send())):o&&r();try{h.cookie=O.cookie}catch(k){}function e(e){for(;e.length;)!function(t){h[t]=function(){var e=arguments;f||h.queue.push(function(){h[t].apply(h,e)})}}(e.pop())}var c,u,l="track",d="TrackPage",p="TrackEvent",l=(e([l+"Event",l+"PageView",l+"Exception",l+"Trace",l+"DependencyData",l+"Metric",l+"PageViewPerformance","start"+d,"stop"+d,"start"+p,"stop"+p,"addTelemetryInitializer","setAuthenticatedUserContext","clearAuthenticatedUserContext","flush"]),h.SeverityLevel={Verbose:0,Information:1,Warning:2,Error:3,Critical:4},(g.extensionConfig||{}).ApplicationInsightsAnalytics||{});return!0!==g[L]&&!0!==l[L]&&(e(["_"+(c="onerror")]),u=C[c],C[c]=function(e,t,n,i,a){var 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+    src: "https://js.monitor.azure.com/scripts/b/ai.3.gbl.min.js",
+    // name: "appInsights", // Global SDK Instance name defaults to "appInsights" when not supplied
+    // ld: 0, // Defines the load delay (in ms) before attempting to load the sdk. -1 = block page load and add to head. (default) = 0ms load after timeout,
+    // useXhr: 1, // Use XHR instead of fetch to report failures (if available),
+    // dle: true, // Prevent the SDK from reporting load failure log
+    crossOrigin: "anonymous", // When supplied this will add the provided value as the cross origin attribute on the script tag
+    // onInit: null, // Once the application insights instance has loaded and initialized this callback function will be called with 1 argument -- the sdk instance (DO NOT ADD anything to the sdk.queue -- As they won't get called)
+    sri: true, // Custom optional value to specify whether fetching the snippet from integrity file and do integrity check 
+    cfg: { // Application Insights Configuration
+        connectionString: "Your-connection-string-here"
+    }
+});
   </script>
   </head>
   <body>
     <h1>Microsoft Application Insights JavaScript SDK - AISKU</h1>
     <script>
-      let appInsights = new Microsoft.ApplicationInsights.ApplicationInsights({ config: {connectionString: "InstrumentationKey=88888888", disableInstrumentationKeyValidation: true}});
+      let appInsights = new ApplicationInsights.ApplicationInsights({ config: {connectionString: "InstrumentationKey=88888888", disableInstrumentationKeyValidation: true}});
       appInsights.loadAppInsights();
       window.appInsights = appInsights;
     </script>
diff --git a/README.md b/README.md
index d69a45119..a135b5294 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ The current version of the snippet is version 7, the version is identified by th
 
 ```html
 <script type="text/javascript">
-!(function (cfg){function e(){cfg.onInit&&cfg.onInit(i)}var S,u,D,t,n,i,C=window,x=document,w=C.location,I="script",b="ingestionendpoint",E="disableExceptionTracking",A="ai.device.";"instrumentationKey"[S="toLowerCase"](),u="crossOrigin",D="POST",t="appInsightsSDK",n=cfg.name||"appInsights",(cfg.name||C[t])&&(C[t]=n),i=C[n]||function(l){var d=!1,g=!1,f={initialize:!0,queue:[],sv:"7",version:2,config:l};function m(e,t){var n={},i="Browser";function a(e){e=""+e;return 1===e.length?"0"+e:e}return n[A+"id"]=i[S](),n[A+"type"]=i,n["ai.operation.name"]=w&&w.pathname||"_unknown_",n["ai.internal.sdkVersion"]="javascript:snippet_"+(f.sv||f.version),{time:(i=new Date).getUTCFullYear()+"-"+a(1+i.getUTCMonth())+"-"+a(i.getUTCDate())+"T"+a(i.getUTCHours())+":"+a(i.getUTCMinutes())+":"+a(i.getUTCSeconds())+"."+(i.getUTCMilliseconds()/1e3).toFixed(3).slice(2,5)+"Z",iKey:e,name:"Microsoft.ApplicationInsights."+e.replace(/-/g,"")+"."+t,sampleRate:100,tags:n,data:{baseData:{ver:2}},ver:4,seq:"1",aiDataContract:undefined}}var h=-1,v=0,y=["js.monitor.azure.com","js.cdn.applicationinsights.io","js.cdn.monitor.azure.com","js0.cdn.applicationinsights.io","js0.cdn.monitor.azure.com","js2.cdn.applicationinsights.io","js2.cdn.monitor.azure.com","az416426.vo.msecnd.net"],k=l.url||cfg.src;if(k){if((n=navigator)&&(~(n=(n.userAgent||"").toLowerCase()).indexOf("msie")||~n.indexOf("trident/"))&&~k.indexOf("ai.3")&&(k=k.replace(/(\/)(ai\.3\.)([^\d]*)$/,function(e,t,n){return t+"ai.2"+n})),!1!==cfg.cr)for(var e=0;e<y.length;e++)if(0<k.indexOf(y[e])){h=e;break}var i=function(e){var a,t,n,i,o,r,s,c,p,u;f.queue=[],g||(0<=h&&v+1<y.length?(a=(h+v+1)%y.length,T(k.replace(/^(.*\/\/)([\w\.]*)(\/.*)$/,function(e,t,n,i){return t+y[a]+i})),v+=1):(d=g=!0,o=k,c=(p=function(){var e,t={},n=l.connectionString;if(n)for(var i=n.split(";"),a=0;a<i.length;a++){var o=i[a].split("=");2===o.length&&(t[o[0][S]()]=o[1])}return t[b]||(e=(n=t.endpointsuffix)?t.location:null,t[b]="https://"+(e?e+".":"")+"dc."+(n||"services.visualstudio.com")),t}()).instrumentationkey||l.instrumentationKey||"",p=(p=p[b])?p+"/v2/track":l.endpointUrl,(u=[]).push((t="SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details)",n=o,r=p,(s=(i=m(c,"Exception")).data).baseType="ExceptionData",s.baseData.exceptions=[{typeName:"SDKLoadFailed",message:t.replace(/\./g,"-"),hasFullStack:!1,stack:t+"\nSnippet failed to load ["+n+"] -- Telemetry is disabled\nHelp Link: https://go.microsoft.com/fwlink/?linkid=2128109\nHost: "+(w&&w.pathname||"_unknown_")+"\nEndpoint: "+r,parsedStack:[]}],i)),u.push((s=o,t=p,(r=(n=m(c,"Message")).data).baseType="MessageData",(i=r.baseData).message='AI (Internal): 99 message:"'+("SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details) ("+s+")").replace(/\"/g,"")+'"',i.properties={endpoint:t},n)),o=u,c=p,JSON&&((r=C.fetch)&&!cfg.useXhr?r(c,{method:D,body:JSON.stringify(o),mode:"cors"}):XMLHttpRequest&&((s=new XMLHttpRequest).open(D,c),s.setRequestHeader("Content-type","application/json"),s.send(JSON.stringify(o))))))},a=function(e,t){g||setTimeout(function(){!t&&f.core||i()},500),d=!1},T=function(e){var n=x.createElement(I),e=(n.src=e,cfg[u]);return!e&&""!==e||"undefined"==n[u]||(n[u]=e),n.onload=a,n.onerror=i,n.onreadystatechange=function(e,t){"loaded"!==n.readyState&&"complete"!==n.readyState||a(0,t)},cfg.ld&&cfg.ld<0?x.getElementsByTagName("head")[0].appendChild(n):setTimeout(function(){x.getElementsByTagName(I)[0].parentNode.appendChild(n)},cfg.ld||0),n};T(k)}try{f.cookie=x.cookie}catch(p){}function t(e){for(;e.length;)!function(t){f[t]=function(){var e=arguments;d||f.queue.push(function(){f[t].apply(f,e)})}}(e.pop())}var r,s,n="track",o="TrackPage",c="TrackEvent",n=(t([n+"Event",n+"PageView",n+"Exception",n+"Trace",n+"DependencyData",n+"Metric",n+"PageViewPerformance","start"+o,"stop"+o,"start"+c,"stop"+c,"addTelemetryInitializer","setAuthenticatedUserContext","clearAuthenticatedUserContext","flush"]),f.SeverityLevel={Verbose:0,Information:1,Warning:2,Error:3,Critical:4},(l.extensionConfig||{}).ApplicationInsightsAnalytics||{});return!0!==l[E]&&!0!==n[E]&&(t(["_"+(r="onerror")]),s=C[r],C[r]=function(e,t,n,i,a){var o=s&&s(e,t,n,i,a);return!0!==o&&f["_"+r]({message:e,url:t,lineNumber:n,columnNumber:i,error:a,evt:C.event}),o},l.autoExceptionInstrumented=!0),f}(cfg.cfg),(C[n]=i).queue&&0===i.queue.length?(i.queue.push(e),i.trackPageView({})):e();})({
+!(function (cfg){function e(){cfg.onInit&&cfg.onInit(n)}var x,w,D,t,E,n,C=window,O=document,b=C.location,q="script",I="ingestionendpoint",L="disableExceptionTracking",j="ai.device.";"instrumentationKey"[x="toLowerCase"](),w="crossOrigin",D="POST",t="appInsightsSDK",E=cfg.name||"appInsights",(cfg.name||C[t])&&(C[t]=E),n=C[E]||function(g){var f=!1,m=!1,h={initialize:!0,queue:[],sv:"8",version:2,config:g};function v(e,t){var n={},i="Browser";function a(e){e=""+e;return 1===e.length?"0"+e:e}return n[j+"id"]=i[x](),n[j+"type"]=i,n["ai.operation.name"]=b&&b.pathname||"_unknown_",n["ai.internal.sdkVersion"]="javascript:snippet_"+(h.sv||h.version),{time:(i=new Date).getUTCFullYear()+"-"+a(1+i.getUTCMonth())+"-"+a(i.getUTCDate())+"T"+a(i.getUTCHours())+":"+a(i.getUTCMinutes())+":"+a(i.getUTCSeconds())+"."+(i.getUTCMilliseconds()/1e3).toFixed(3).slice(2,5)+"Z",iKey:e,name:"Microsoft.ApplicationInsights."+e.replace(/-/g,"")+"."+t,sampleRate:100,tags:n,data:{baseData:{ver:2}},ver:undefined,seq:"1",aiDataContract:undefined}}var n,i,t,a,y=-1,T=0,S=["js.monitor.azure.com","js.cdn.applicationinsights.io","js.cdn.monitor.azure.com","js0.cdn.applicationinsights.io","js0.cdn.monitor.azure.com","js2.cdn.applicationinsights.io","js2.cdn.monitor.azure.com","az416426.vo.msecnd.net"],o=g.url||cfg.src,r=function(){return s(o,null)};function s(d,t){if((n=navigator)&&(~(n=(n.userAgent||"").toLowerCase()).indexOf("msie")||~n.indexOf("trident/"))&&~d.indexOf("ai.3")&&(d=d.replace(/(\/)(ai\.3\.)([^\d]*)$/,function(e,t,n){return t+"ai.2"+n})),!1!==cfg.cr)for(var e=0;e<S.length;e++)if(0<d.indexOf(S[e])){y=e;break}var n,i=function(e){var a,t,n,i,o,r,s,c,u,l;h.queue=[],m||(0<=y&&T+1<S.length?(a=(y+T+1)%S.length,p(d.replace(/^(.*\/\/)([\w\.]*)(\/.*)$/,function(e,t,n,i){return t+S[a]+i})),T+=1):(f=m=!0,s=d,!0!==cfg.dle&&(c=(t=function(){var e,t={},n=g.connectionString;if(n)for(var i=n.split(";"),a=0;a<i.length;a++){var o=i[a].split("=");2===o.length&&(t[o[0][x]()]=o[1])}return t[I]||(e=(n=t.endpointsuffix)?t.location:null,t[I]="https://"+(e?e+".":"")+"dc."+(n||"services.visualstudio.com")),t}()).instrumentationkey||g.instrumentationKey||"",t=(t=(t=t[I])&&"/"===t.slice(-1)?t.slice(0,-1):t)?t+"/v2/track":g.endpointUrl,t=g.userOverrideEndpointUrl||t,(n=[]).push((i="SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details)",o=s,u=t,(l=(r=v(c,"Exception")).data).baseType="ExceptionData",l.baseData.exceptions=[{typeName:"SDKLoadFailed",message:i.replace(/\./g,"-"),hasFullStack:!1,stack:i+"\nSnippet failed to load ["+o+"] -- Telemetry is disabled\nHelp Link: https://go.microsoft.com/fwlink/?linkid=2128109\nHost: "+(b&&b.pathname||"_unknown_")+"\nEndpoint: "+u,parsedStack:[]}],r)),n.push((l=s,i=t,(u=(o=v(c,"Message")).data).baseType="MessageData",(r=u.baseData).message='AI (Internal): 99 message:"'+("SDK LOAD Failure: Failed to load Application Insights SDK script (See stack for details) ("+l+")").replace(/\"/g,"")+'"',r.properties={endpoint:i},o)),s=n,c=t,JSON&&((u=C.fetch)&&!cfg.useXhr?u(c,{method:D,body:JSON.stringify(s),mode:"cors"}):XMLHttpRequest&&((l=new XMLHttpRequest).open(D,c),l.setRequestHeader("Content-type","application/json"),l.send(JSON.stringify(s)))))))},a=function(e,t){m||setTimeout(function(){!t&&h.core||i()},500),f=!1},p=function(e){var n=O.createElement(q),e=(n.src=e,t&&(n.integrity=t),n.setAttribute("data-ai-name",E),cfg[w]);return!e&&""!==e||"undefined"==n[w]||(n[w]=e),n.onload=a,n.onerror=i,n.onreadystatechange=function(e,t){"loaded"!==n.readyState&&"complete"!==n.readyState||a(0,t)},cfg.ld&&cfg.ld<0?O.getElementsByTagName("head")[0].appendChild(n):setTimeout(function(){O.getElementsByTagName(q)[0].parentNode.appendChild(n)},cfg.ld||0),n};p(d)}cfg.sri&&(n=o.match(/^((http[s]?:\/\/.*\/)\w+(\.\d+){1,5})\.(([\w]+\.){0,2}js)$/))&&6===n.length?(d="".concat(n[1],".integrity.json"),i="@".concat(n[4]),l=window.fetch,t=function(e){if(!e.ext||!e.ext[i]||!e.ext[i].file)throw Error("Error Loading JSON response");var t=e.ext[i].integrity||null;s(o=n[2]+e.ext[i].file,t)},l&&!cfg.useXhr?l(d,{method:"GET",mode:"cors"}).then(function(e){return e.json()["catch"](function(){return{}})}).then(t)["catch"](r):XMLHttpRequest&&((a=new XMLHttpRequest).open("GET",d),a.onreadystatechange=function(){if(a.readyState===XMLHttpRequest.DONE)if(200===a.status)try{t(JSON.parse(a.responseText))}catch(e){r()}else r()},a.send())):o&&r();try{h.cookie=O.cookie}catch(k){}function e(e){for(;e.length;)!function(t){h[t]=function(){var e=arguments;f||h.queue.push(function(){h[t].apply(h,e)})}}(e.pop())}var c,u,l="track",d="TrackPage",p="TrackEvent",l=(e([l+"Event",l+"PageView",l+"Exception",l+"Trace",l+"DependencyData",l+"Metric",l+"PageViewPerformance","start"+d,"stop"+d,"start"+p,"stop"+p,"addTelemetryInitializer","setAuthenticatedUserContext","clearAuthenticatedUserContext","flush"]),h.SeverityLevel={Verbose:0,Information:1,Warning:2,Error:3,Critical:4},(g.extensionConfig||{}).ApplicationInsightsAnalytics||{});return!0!==g[L]&&!0!==l[L]&&(e(["_"+(c="onerror")]),u=C[c],C[c]=function(e,t,n,i,a){var o=u&&u(e,t,n,i,a);return!0!==o&&h["_"+c]({message:e,url:t,lineNumber:n,columnNumber:i,error:a,evt:C.event}),o},g.autoExceptionInstrumented=!0),h}(cfg.cfg),(C[E]=n).queue&&0===n.queue.length?(n.queue.push(e),n.trackPageView({})):e();})({
     src: "https://js.monitor.azure.com/scripts/b/ai.3.gbl.min.js",
     // name: "appInsights", // Global SDK Instance name defaults to "appInsights" when not supplied
     // ld: 0, // Defines the load delay (in ms) before attempting to load the sdk. -1 = block page load and add to head. (default) = 0ms load after timeout,
@@ -88,6 +88,7 @@ The current version of the snippet is version 7, the version is identified by th
     // dle: true, // Prevent the SDK from reporting load failure log
     crossOrigin: "anonymous", // When supplied this will add the provided value as the cross origin attribute on the script tag
     // onInit: null, // Once the application insights instance has loaded and initialized this callback function will be called with 1 argument -- the sdk instance (DO NOT ADD anything to the sdk.queue -- As they won't get called)
+    // sri: false, // Custom optional value to specify whether fetching the snippet from integrity file and do integrity check 
     cfg: { // Application Insights Configuration
         connectionString: "YOUR_CONNECTION_STRING"
     }
@@ -135,6 +136,7 @@ The available configuration options are: -
 | crossOrigin | string *[optional]* | By including this setting, the script tag added to download the SDK will include the crossOrigin attribute with this string value. When not defined (the default) no crossOrigin attribute is added. Recommended values are not defined (the default); ""; or "anonymous" (For all valid values see [HTML attribute: crossorigin](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin) documentation)
 | onInit | function(aiSdk) { ... } *[optional]* | This callback function which is called after the main SDK script has been successfully loaded and initialized from the CDN (based on the src value), it is passed a reference to the sdk instance that it is being called for and it is also called _before_ the first initial page view. If the SDK has already been loaded and initialized this callback will still be called. NOTE: As this callback is called during the processing of the sdk.queue array you CANNOT add any additional items to the queue as they will be ignored and dropped. (Added as part of snippet version 5 -- the sv:"#" value within the snippet script, the current version is 7)
 | cfg | object **[required]** | The configuration passed to the Application Insights SDK during initialization.
+| sri | boolean *[optional]* | Custom optional value to specify whether to fetch the snippet from an integrity file and perform an integrity check. When this option is used, the integrity file is loaded first, affecting the load order and script execution. Hence the ld option will be ignored. Additionally, if the page navigates away before the integrity file is loaded, some events may be lost.
 
 #### Example using the snippet onInit callback
 
diff --git a/tools/applicationinsights-web-snippet/Tests/Unit/src/SnippetTests.ts b/tools/applicationinsights-web-snippet/Tests/Unit/src/SnippetTests.ts
index 0aeb3a5f5..a85f4ebc3 100644
--- a/tools/applicationinsights-web-snippet/Tests/Unit/src/SnippetTests.ts
+++ b/tools/applicationinsights-web-snippet/Tests/Unit/src/SnippetTests.ts
@@ -12,7 +12,7 @@ export class SnippetTests extends AITestClass {
         this.testCase({
             name: "Check snippet version",
             test: () => {
-                QUnit.assert.equal("7", webSnippetVersion());
+                QUnit.assert.equal("8", webSnippetVersion());
             }
         });
 
diff --git a/tools/applicationinsights-web-snippet/src/snippet-config.js b/tools/applicationinsights-web-snippet/src/snippet-config.js
index 4eb803533..7795d7178 100644
--- a/tools/applicationinsights-web-snippet/src/snippet-config.js
+++ b/tools/applicationinsights-web-snippet/src/snippet-config.js
@@ -6,6 +6,7 @@
     // dle: true, // Prevent the SDK from reporting load failure log
     crossOrigin: "anonymous", // When supplied this will add the provided value as the cross origin attribute on the script tag
     // onInit: null, // Once the application insights instance has loaded and initialized this callback function will be called with 1 argument -- the sdk instance (DO NOT ADD anything to the sdk.queue -- As they won't get called)
+    // sri: false, // Custom optional value to specify whether fetching the snippet from integrity file and do integrity check 
     cfg: { // Application Insights Configuration
         connectionString: "YOUR_CONNECTION_STRING"
     }
diff --git a/tools/applicationinsights-web-snippet/src/snippet.ts b/tools/applicationinsights-web-snippet/src/snippet.ts
index 3d1cb2e47..d22c7325c 100644
--- a/tools/applicationinsights-web-snippet/src/snippet.ts
+++ b/tools/applicationinsights-web-snippet/src/snippet.ts
@@ -24,8 +24,10 @@ declare var cfg:ISnippetConfig;
     let strEmpty = "";
     let strUndefined = "undefined";
     let strCrossOrigin = "crossOrigin";
+    let strJsonResponseError = "Error Loading JSON response";
 
     let strPostMethod = "POST";
+    let strGetMethod = "GET";
     let sdkInstanceName = "appInsightsSDK";         // required for Initialization to find the current instance
     let aiName = cfg.name || "appInsights";  // provide non default instance name through snipConfig name value
     if (cfg.name || win[sdkInstanceName]) {
@@ -38,7 +40,7 @@ declare var cfg:ISnippetConfig;
         let appInsights: (Snippet & {initialize:boolean, cookie?:any, core?:any})= {
             initialize: true,   // initialize sdk on download
             queue: [],
-            sv: "7",            // Track the actual snippet version for reporting.
+            sv: "8",            // Track the actual snippet version for reporting.
             version: 2.0,       // initialization version, if this is not 2.0 the previous scripts fail to initialize
             config: aiConfig
         };
@@ -154,7 +156,7 @@ declare var cfg:ISnippetConfig;
                         ver: 2
                     }
                 },
-                ver: 4.0,
+                ver: undefined,
                 seq: "1",
                 aiDataContract: undefined
             };
@@ -202,11 +204,58 @@ declare var cfg:ISnippetConfig;
             "js2.cdn.applicationinsights.io",
             "js2.cdn.monitor.azure.com",
             "az416426.vo.msecnd.net" // this domain is supported but not recommended
-        ]
-    
-        // Assigning these to local variables allows them to be minified to save space:
-        let targetSrc : string = (aiConfig as any)["url"] || cfg.src
-        if (targetSrc) {
+        ];
+
+        let targetSrc : string = (aiConfig as any)["url"] || cfg.src;
+        const fallback = () => setScript(targetSrc, null);
+        if (cfg.sri) {
+            const match = targetSrc.match(/^((http[s]?:\/\/.*\/)\w+(\.\d+){1,5})\.(([\w]+\.){0,2}js)$/);
+            if (match && match.length === 6) {
+                const integrityUrl = `${match[1]}.integrity.json`;
+                const targetType = `@${match[4]}`;
+                const sender = window.fetch;
+                const handleResponse = (json:any) => {
+                    if (!json.ext || !json.ext[targetType] || !json.ext[targetType].file) {
+                        throw new Error(strJsonResponseError);
+                    }
+                    const integrity = json.ext[targetType].integrity || null;
+                    targetSrc = match[2] + json.ext[targetType].file;
+                    setScript(targetSrc, integrity);
+                };
+        
+                if (sender && !cfg.useXhr) {
+                    sender(integrityUrl, { method: strGetMethod, mode: "cors" })
+                        .then(response => response.json().catch(() => ({})))
+                        .then(handleResponse)
+                        .catch(fallback);
+                } else if (XMLHttpRequest) {
+                    const xhr = new XMLHttpRequest();
+                    xhr.open(strGetMethod, integrityUrl);
+                    xhr.onreadystatechange = () => {
+                        if (xhr.readyState === XMLHttpRequest.DONE) {
+                            if (xhr.status === 200) {
+                                try {
+                                    handleResponse(JSON.parse(xhr.responseText));
+                                } catch {
+                                    fallback();
+                                }
+                            } else {
+                                fallback();
+                            }
+                        }
+                    };
+                    xhr.send();
+                }
+            } else if (targetSrc) {
+                fallback(); // Fallback to original behavior
+            }
+        } else if (targetSrc) {
+            fallback(); // Fallback to original behavior
+        }
+        
+        
+
+        function setScript(targetSrc: string, integrity: string | null) {
             if (isIE() && targetSrc.indexOf("ai.3") !== -1) {
                 // This regex matches any URL which contains "\ai.3." but not any full versions like "\ai.3.1" etc
                 targetSrc = targetSrc.replace(/(\/)(ai\.3\.)([^\d]*)$/, function(_all, g1, g2) {
@@ -258,6 +307,10 @@ declare var cfg:ISnippetConfig;
             const _createScript = (src: string) => {
                 let scriptElement : HTMLElement = doc.createElement(scriptText);
                 (scriptElement as any)["src"] = src;
+                if (integrity){
+                    // Set the integrity attribute to the script tag if integrity is provided
+                    (scriptElement as any).integrity = integrity;
+                }
                 (scriptElement as any).setAttribute("data-ai-name", aiName);
                 // Allocate Cross origin only if defined and available
                 let crossOrigin = cfg[strCrossOrigin];
diff --git a/tools/applicationinsights-web-snippet/src/type.ts b/tools/applicationinsights-web-snippet/src/type.ts
index 27dfbf147..ec4eecc79 100644
--- a/tools/applicationinsights-web-snippet/src/type.ts
+++ b/tools/applicationinsights-web-snippet/src/type.ts
@@ -16,6 +16,7 @@ export interface ISnippetConfig {
     cfg: IConfiguration;
     cr?: boolean; // cdn retry would be proceed if ture
     dle?: boolean; // Custom optional value to disable sdk load error to be sent
+    sri?: boolean; // Custom optional value to specify whether fetching the snippet from integrity file and do integrity check
 }
 
 export interface Fields {
