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You don't get to control the\nuser's network connection. For a similar reason you also need to think about\nwhat happens if the request fails. You can't control the user's connection\nrelability either.`}),`\n`,(0,n.jsxs)(e.p,{children:[`React has a nice way to manage both of these declaratively in components using\n`,(0,n.jsx)(e.code,{children:\"Suspense\"}),\" and \",(0,n.jsx)(e.code,{children:\"ErrorBoundary\"}),\".\"]}),`\n`,(0,n.jsxs)(e.p,{children:[`The biggest trick is how to trigger these two things to happen when rendering\nthe UI. This is where the `,(0,n.jsx)(e.code,{children:\"use\"}),\" hook comes in:\"]}),`\n`,(0,n.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,n.jsxs)(e.code,{children:[(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"function\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"PhoneDetails\"}),\"() {\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"const\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"details\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"use\"}),\"(\",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"phoneDetailsPromise\"}),\")\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// now you have the details\"}),`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:[\"}\",`\n`]})]})}),`\n`,(0,n.jsxs)(e.p,{children:[\"What's important for you to understand here is that the \",(0,n.jsx)(e.code,{children:\"use\"}),` hook is passed a\npromise. It's not where you `,(0,n.jsx)(e.em,{children:\"create\"}),` a promise. You need to have triggered the\n`,(0,n.jsx)(e.code,{children:\"fetch\"}),\" request somewhere else and then pass it along to the \",(0,n.jsx)(e.code,{children:\"use\"}),` hook.\nOtherwise every time your component renders you'll trigger the `,(0,n.jsx)(e.code,{children:\"fetch\"}),` request\nagain. However, there are ways around this which we'll explore later on.`]}),`\n`,(0,n.jsxs)(e.p,{children:[\"The real trick though is how the heck does \",(0,n.jsx)(e.code,{children:\"use\"}),` turn a promise into a resolved\nvalue without using `,(0,n.jsx)(e.code,{children:\"await\"}),`!? We need to make sure the code does not continue if\nthe `,(0,n.jsx)(e.code,{children:\"use\"}),\" hook can't return the resolved \",(0,n.jsx)(e.code,{children:\"details\"}),`. So how does it manage to do\nthis? The answer is actually simpler than you might think.`]}),`\n`,(0,n.jsxs)(e.p,{children:[`Let me ask you some JavaScript trivia... How do you synchronously stop a\nfunction from running to completion? You `,(0,n.jsx)(e.code,{children:\"throw\"}),` something! So that's exactly\nwhat the `,(0,n.jsx)(e.code,{children:\"use\"}),\" hook does. It adds a \",(0,n.jsx)(e.code,{children:\".then\"}),` onto the promise so it can store the\nresolved value, and then it throws the promise. When the promise resolves, React\nwill re-render your component and this time the `,(0,n.jsx)(e.code,{children:\"use\"}),` hook will have the\nresolved value to return!`]}),`\n`,(0,n.jsxs)(e.p,{children:[`This is kind of hilarious, but it works great. The implementation details of the\n`,(0,n.jsx)(e.code,{children:\"use\"}),` hook are a bit more complex and they definitely can change, but we'll\nimplement a simplified version of it in this exercise.`]}),`\n`,(0,n.jsxs)(e.p,{children:[`To complete the declarative circle, when the promise is thrown, React will\n\"suspend\" the component which means it will look up the tree of parent\ncomponents for a `,(0,n.jsx)(e.code,{children:\"Suspense\"}),\" component and render its boundary:\"]}),`\n`,(0,n.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,n.jsxs)(e.code,{children:[(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"import\"}),\" { \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"Suspense\"}),\" } \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"from\"}),\" \",\"'\",(0,n.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"react\"}),\"'\",`\n`]}),(0,n.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:`\n`}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"function\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"App\"}),\"() {\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"return\"}),\" (\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"5\",children:[\"\t\t<\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Suspense\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"fallback\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"{\"}),\"<\",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"div\"}),\">loading phone details\",(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"}\"}),\">\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"6\",children:[\"\t\t\t<\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"PhoneDetails\"}),\" />\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"7\",children:[\"\t\t\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"8\",children:[\"\t)\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"9\",children:[\"}\",`\n`]})]})}),`\n`,(0,n.jsx)(e.p,{children:`This works similar to Error Boundaries in that the suspense boundary can handle\nany thrown promises in its children or grandchildren. Also they can be nested so\nyou have a great amount of control over the loading state of your application.`}),`\n`,(0,n.jsxs)(e.p,{children:[\"If the promise rejects, then your \",(0,n.jsx)(e.code,{children:\"ErrorBoundary\"}),` will be triggered and you can\nrender an error message to the user:`]}),`\n`,(0,n.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,n.jsxs)(e.code,{children:[(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"import\"}),\" { \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"Suspense\"}),\" } \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"from\"}),\" \",\"'\",(0,n.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"react\"}),\"'\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"import\"}),\" { \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"ErrorBoundary\"}),\" } \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"from\"}),\" \",\"'\",(0,n.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"react-error-boundary\"}),\"'\",`\n`]}),(0,n.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:`\n`}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"function\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"App\"}),\"() {\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"5\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"return\"}),\" (\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"6\",children:[\"\t\t<\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"ErrorBoundary\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"fallback\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"{\"}),\"<\",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"div\"}),\">Oh no, something bad happened\",(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"}\"}),\">\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"7\",children:[\"\t\t\t<\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Suspense\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"fallback\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"{\"}),\"<\",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"div\"}),\">loading phone details\",(0,n.jsx)(e.span,{style:{color:\"var(--base0F)\"},children:\"}\"}),\">\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"8\",children:[\"\t\t\t\t<\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"PhoneDetails\"}),\" />\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"9\",children:[\"\t\t\t\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"10\",children:[\"\t\t\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"11\",children:[\"\t)\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"12\",children:[\"}\",`\n`]})]})}),`\n`,(0,n.jsxs)(e.p,{children:[\"In this exercise, we're going to build a simplified \",(0,n.jsx)(e.code,{children:\"use\"}),\" hook from scratch.\"]})]})}function h(a={}){let{wrapper:e}=a.components||{};return e?(0,n.jsx)(e,{...a,children:(0,n.jsx)(d,{...a})}):d(a)}function N(a,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+a+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return f(E);})();\n;return Component;","finishedCode","var Component=(()=>{var h=Object.create;var a=Object.defineProperty;var 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Now we have a nice declarative loading/error state for loading data\nor really managing any async thing. Good work.`})]})}function f(e={}){let{wrapper:n}=e.components||{};return n?(0,o.jsx)(n,{...e,children:(0,o.jsx)(p,{...e})}):p(e)}function k(e,n){throw new Error(\"Expected \"+(n?\"component\":\"object\")+\" `\"+e+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return j(v);})();\n;return Component;","instructionsEpicVideoEmbeds",[485],"https://www.epicreact.dev/workshops/react-suspense/intro-to-data-fetching","finishedEpicVideoEmbeds",[488],"https://www.epicreact.dev/workshops/react-suspense/dad-joke-break-data-fetching",[490,523,547,571,595],{"_271":291,"_268":491,"_290":511},{"_20":21,"_160":373,"_477":492,"_22":23,"_24":25,"_479":493,"_494":495,"_497":498,"_505":506,"_508":509,"_269":291,"_271":291,"_9":268,"_510":27},"01.problem.throw","var Component=(()=>{var u=Object.create;var s=Object.defineProperty;var f=Object.getOwnPropertyDescriptor;var w=Object.getOwnPropertyNames;var m=Object.getPrototypeOf,g=Object.prototype.hasOwnProperty;var b=(t,e)=>()=>(e||t((e={exports:{}}).exports,e),e.exports),v=(t,e)=>{for(var i in e)s(t,i,{get:e[i],enumerable:!0})},a=(t,e,i,o)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let r of w(e))!g.call(t,r)&&r!==i&&s(t,r,{get:()=>e[r],enumerable:!(o=f(e,r))||o.enumerable});return t};var x=(t,e,i)=>(i=t!=null?u(m(t)):{},a(e||!t||!t.__esModule?s(i,\"default\",{value:t,enumerable:!0}):i,t)),y=t=>a(s({},\"__esModule\",{value:!0}),t);var c=b((T,h)=>{h.exports=_jsx_runtime});var j={};v(j,{default:()=>p,frontmatter:()=>_});var n=x(c()),_=void 0;function d(t){let e={code:\"code\",h1:\"h1\",p:\"p\",...t.components},{EpicVideo:i,InlineFile:o}=e;return i||l(\"EpicVideo\",!0),o||l(\"InlineFile\",!0),(0,n.jsxs)(n.Fragment,{children:[(0,n.jsx)(e.h1,{children:\"Throwing Promises\"}),`\n`,(0,n.jsx)(i,{url:\"https://www.epicreact.dev/workshops/react-suspense/throwing-promises\"}),`\n`,(0,n.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} Right now the app is \"working.\" This app displays information about space\nships from a fictional sci-fi universe. The app is using a `,(0,n.jsx)(e.code,{children:\"fetch\"}),` request to\nget the data in the `,(0,n.jsx)(o,{file:\"utils.tsx\"}),` file. That fetch request\ngets routed (by the workshop app) through `,(0,n.jsx)(o,{file:\"api.server.ts\"}),`\nwhich retrieves the data from `,(0,n.jsx)(e.code,{children:\"./shared/ship-api-utils.server.ts\"}),\".\"]}),`\n`,(0,n.jsxs)(e.p,{children:[\"The problem is that while the \",(0,n.jsx)(e.code,{children:\"fetch\"}),` request is ongoing, the user is just\nstaring at a blank white screen. Now we could for sure improve the HTML document\nfile a bit to have a loading state in HTML until the ship data shows up, but we\nwant to be able to manage transitions like this as the user navigates around as\nwell. Componentize all the things!`]}),`\n`,(0,n.jsxs)(e.p,{children:[\"So for this first step, you're going to need to remove the \",(0,n.jsx)(e.code,{children:\"await\"}),` on the\n`,(0,n.jsx)(e.code,{children:\"getShip\"}),\" call and then if the \",(0,n.jsx)(e.code,{children:\"ship\"}),` data hasn't loaded yet, you'll throw the\n`,(0,n.jsx)(e.code,{children:\"shipPromise\"}),\". You can also wrap the \",(0,n.jsx)(e.code,{children:\"\"}),\" in a \",(0,n.jsx)(e.code,{children:\"\"}),`\nboundary and render the `,(0,n.jsx)(e.code,{children:\"\"}),` component so we have a nicer loading\nstate.`]}),`\n`,(0,n.jsx)(e.p,{children:\"Give that a whirl!\"})]})}function p(t={}){let{wrapper:e}=t.components||{};return e?(0,n.jsx)(e,{...t,children:(0,n.jsx)(d,{...t})}):d(t)}function l(t,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+t+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return y(j);})();\n;return Component;","epicVideoEmbeds",[496],"https://www.epicreact.dev/workshops/react-suspense/throwing-promises","test",{"_9":499,"_500":501,"_502":503},"browser","pathname","/app/01.01.problem/test/","testFiles",[504],"suspense.test.ts","dev",{"_9":499,"_500":507},"/app/01.01.problem/","stackBlitzUrl","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/01.problem.throw?view=editor&title=Throwing+Promises+%28problem%29","solutionName",{"_20":27,"_160":373,"_477":512,"_22":28,"_24":29,"_479":513,"_494":514,"_497":516,"_505":519,"_508":521,"_269":291,"_271":291,"_9":290,"_522":-5},"01.solution.throw","var Component=(()=>{var u=Object.create;var s=Object.defineProperty;var l=Object.getOwnPropertyDescriptor;var m=Object.getOwnPropertyNames;var f=Object.getPrototypeOf,w=Object.prototype.hasOwnProperty;var x=(o,e)=>()=>(e||o((e={exports:{}}).exports,e),e.exports),_=(o,e)=>{for(var t in e)s(o,t,{get:e[t],enumerable:!0})},c=(o,e,t,i)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let r of m(e))!w.call(o,r)&&r!==t&&s(o,r,{get:()=>e[r],enumerable:!(i=l(e,r))||i.enumerable});return o};var g=(o,e,t)=>(t=o!=null?u(f(o)):{},c(e||!o||!o.__esModule?s(t,\"default\",{value:o,enumerable:!0}):t,o)),j=o=>c(s({},\"__esModule\",{value:!0}),o);var d=x((k,p)=>{p.exports=_jsx_runtime});var E={};_(E,{default:()=>h,frontmatter:()=>y});var n=g(d()),y=void 0;function a(o){let e={code:\"code\",h1:\"h1\",p:\"p\",...o.components},{EpicVideo:t}=e;return t||b(\"EpicVideo\",!0),(0,n.jsxs)(n.Fragment,{children:[(0,n.jsx)(e.h1,{children:\"Throwing Promises\"}),`\n`,(0,n.jsx)(t,{url:\"https://www.epicreact.dev/workshops/react-suspense/throwing-promises/solution\"}),`\n`,(0,n.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} Great job! You've successfully thrown the promise, thereby suspending the\n`,(0,n.jsx)(e.code,{children:\"ShipDetails\"}),` component so React can render the suspense fallback while we wait\nfor the ship to load. We're on our way!`]})]})}function h(o={}){let{wrapper:e}=o.components||{};return e?(0,n.jsx)(e,{...o,children:(0,n.jsx)(a,{...o})}):a(o)}function b(o,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+o+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return j(E);})();\n;return Component;",[515],"https://www.epicreact.dev/workshops/react-suspense/throwing-promises/solution",{"_9":499,"_500":517,"_502":518},"/app/01.01.solution/test/",[504],{"_9":499,"_500":520},"/app/01.01.solution/","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/01.solution.throw?view=editor&title=Throwing+Promises+%28solution%29","problemName",{"_271":292,"_268":524,"_290":536},{"_20":31,"_160":375,"_477":525,"_22":32,"_24":33,"_479":526,"_494":527,"_497":529,"_505":533,"_508":535,"_269":291,"_271":292,"_9":268,"_510":35},"02.problem.errors","var Component=(()=>{var p=Object.create;var c=Object.defineProperty;var u=Object.getOwnPropertyDescriptor;var f=Object.getOwnPropertyNames;var m=Object.getPrototypeOf,x=Object.prototype.hasOwnProperty;var g=(n,e)=>()=>(e||n((e={exports:{}}).exports,e),e.exports),w=(n,e)=>{for(var r in e)c(n,r,{get:e[r],enumerable:!0})},i=(n,e,r,a)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let t of f(e))!x.call(n,t)&&t!==r&&c(n,t,{get:()=>e[t],enumerable:!(a=u(e,t))||a.enumerable});return n};var y=(n,e,r)=>(r=n!=null?p(m(n)):{},i(e||!n||!n.__esModule?c(r,\"default\",{value:n,enumerable:!0}):r,n)),_=n=>i(c({},\"__esModule\",{value:!0}),n);var s=g((M,d)=>{d.exports=_jsx_runtime});var j={};w(j,{default:()=>l,frontmatter:()=>E});var o=y(s()),E=void 0;function h(n){let e={code:\"code\",h1:\"h1\",p:\"p\",...n.components},{EpicVideo:r}=e;return r||b(\"EpicVideo\",!0),(0,o.jsxs)(o.Fragment,{children:[(0,o.jsx)(e.h1,{children:\"Error Handling\"}),`\n`,(0,o.jsx)(r,{url:\"https://www.epicreact.dev/workshops/react-suspense/error-handling\"}),`\n`,(0,o.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} If the user has a bad network connection or something we want to handle that\nerror case gracefully. Please wrap the `,(0,o.jsx)(e.code,{children:\"ShipDetails\"}),\" in an \",(0,o.jsx)(e.code,{children:\"ErrorBoundary\"}),` from\n`,(0,o.jsx)(e.code,{children:\"react-error-boundary\"}),\".\"]}),`\n`,(0,o.jsxs)(e.p,{children:[\"You can test this out by changing the \",(0,o.jsx)(e.code,{children:\"shipName\"}),` to a ship that doesn't exist.\nWe also have a good fallback for you to use that \\u{1F9DD}\\u200D\\u2642\\uFE0F Kellie made called\n`,(0,o.jsx)(e.code,{children:\"ShipError\"}),\". Good luck!\"]})]})}function l(n={}){let{wrapper:e}=n.components||{};return e?(0,o.jsx)(e,{...n,children:(0,o.jsx)(h,{...n})}):h(n)}function b(n,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+n+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return _(j);})();\n;return Component;",[528],"https://www.epicreact.dev/workshops/react-suspense/error-handling",{"_9":499,"_500":530,"_502":531},"/app/01.02.problem/test/",[532],"error.test.ts",{"_9":499,"_500":534},"/app/01.02.problem/","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/02.problem.errors?view=editor&title=Error+Handling+%28problem%29",{"_20":35,"_160":375,"_477":537,"_22":36,"_24":37,"_479":538,"_494":539,"_497":541,"_505":544,"_508":546,"_269":291,"_271":292,"_9":290,"_522":-5},"02.solution.errors","var Component=(()=>{var u=Object.create;var i=Object.defineProperty;var h=Object.getOwnPropertyDescriptor;var f=Object.getOwnPropertyNames;var m=Object.getPrototypeOf,w=Object.prototype.hasOwnProperty;var x=(e,n)=>()=>(n||e((n={exports:{}}).exports,n),n.exports),g=(e,n)=>{for(var t in n)i(e,t,{get:n[t],enumerable:!0})},a=(e,n,t,s)=>{if(n&&typeof n==\"object\"||typeof n==\"function\")for(let o of f(n))!w.call(e,o)&&o!==t&&i(e,o,{get:()=>n[o],enumerable:!(s=h(n,o))||s.enumerable});return e};var _=(e,n,t)=>(t=e!=null?u(m(e)):{},a(n||!e||!e.__esModule?i(t,\"default\",{value:e,enumerable:!0}):t,e)),j=e=>a(i({},\"__esModule\",{value:!0}),e);var d=x((k,c)=>{c.exports=_jsx_runtime});var v={};g(v,{default:()=>p,frontmatter:()=>y});var r=_(d()),y=void 0;function l(e){let n={h1:\"h1\",p:\"p\",...e.components},{EpicVideo:t}=n;return t||E(\"EpicVideo\",!0),(0,r.jsxs)(r.Fragment,{children:[(0,r.jsx)(n.h1,{children:\"Error Handling\"}),`\n`,(0,r.jsx)(t,{url:\"https://www.epicreact.dev/workshops/react-suspense/error-handling/solution\"}),`\n`,(0,r.jsx)(n.p,{children:`\\u{1F468}\\u200D\\u{1F4BC} Great work! Now we have a nice way to declaratively and gracefully handle\nerrors when our data loading has issues.`})]})}function p(e={}){let{wrapper:n}=e.components||{};return n?(0,r.jsx)(n,{...e,children:(0,r.jsx)(l,{...e})}):l(e)}function E(e,n){throw new Error(\"Expected \"+(n?\"component\":\"object\")+\" `\"+e+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return j(v);})();\n;return Component;",[540],"https://www.epicreact.dev/workshops/react-suspense/error-handling/solution",{"_9":499,"_500":542,"_502":543},"/app/01.02.solution/test/",[532],{"_9":499,"_500":545},"/app/01.02.solution/","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/02.solution.errors?view=editor&title=Error+Handling+%28solution%29",{"_271":317,"_268":548,"_290":560},{"_20":39,"_160":377,"_477":549,"_22":40,"_24":41,"_479":550,"_494":551,"_497":553,"_505":557,"_508":559,"_269":291,"_271":317,"_9":268,"_510":43},"03.problem.status","var Component=(()=>{var p=Object.create;var r=Object.defineProperty;var u=Object.getOwnPropertyDescriptor;var m=Object.getOwnPropertyNames;var f=Object.getPrototypeOf,b=Object.prototype.hasOwnProperty;var w=(t,e)=>()=>(e||t((e={exports:{}}).exports,e),e.exports),g=(t,e)=>{for(var o in e)r(t,o,{get:e[o],enumerable:!0})},a=(t,e,o,s)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let i of m(e))!b.call(t,i)&&i!==o&&r(t,i,{get:()=>e[i],enumerable:!(s=u(e,i))||s.enumerable});return t};var x=(t,e,o)=>(o=t!=null?p(f(t)):{},a(e||!t||!t.__esModule?r(o,\"default\",{value:t,enumerable:!0}):o,t)),_=t=>a(r({},\"__esModule\",{value:!0}),t);var d=w((M,l)=>{l.exports=_jsx_runtime});var y={};g(y,{default:()=>h,frontmatter:()=>j});var n=x(d()),j=void 0;function c(t){let e={a:\"a\",code:\"code\",h1:\"h1\",li:\"li\",p:\"p\",ul:\"ul\",...t.components},{EpicVideo:o}=e;return o||k(\"EpicVideo\",!0),(0,n.jsxs)(n.Fragment,{children:[(0,n.jsx)(e.h1,{children:\"Formal Status\"}),`\n`,(0,n.jsx)(o,{url:\"https://www.epicreact.dev/workshops/react-suspense/formal-status\"}),`\n`,(0,n.jsx)(e.p,{children:`\\u{1F468}\\u200D\\u{1F4BC} Let's clean up things a little bit with what we've built so far by making the\nstatus of our promise a little more formal.`}),`\n`,(0,n.jsx)(e.p,{children:\"What we have now is:\"}),`\n`,(0,n.jsxs)(e.ul,{children:[`\n`,(0,n.jsx)(e.li,{children:\"if there's an error, throw it\"}),`\n`,(0,n.jsx)(e.li,{children:\"if there's no ship, throw the promise\"}),`\n`,(0,n.jsx)(e.li,{children:\"render the ship\"}),`\n`]}),`\n`,(0,n.jsx)(e.p,{children:\"But that's not exactly clear.\"}),`\n`,(0,n.jsxs)(e.p,{children:[\"So instead, let's add a \",(0,n.jsx)(e.code,{children:\"status\"}),` variable that can be\n`,(0,n.jsx)(e.code,{children:\"'pending' | 'fulfilled' | 'rejected'\"}),\" (start it out with \",(0,n.jsx)(e.code,{children:\"'pending'\"}),\").\"]}),`\n`,(0,n.jsxs)(e.p,{children:[`\\u{1F4DC} To learn more about why this is important, read\n`,(0,n.jsx)(e.a,{href:\"https://kentcdodds.com/blog/make-impossible-states-impossible\",children:\"Make Impossible States Impossible\"}),`\nand\n`,(0,n.jsx)(e.a,{href:\"https://kentcdodds.com/blog/stop-using-isloading-booleans\",children:\"Stop using isLoading booleans\"})]})]})}function h(t={}){let{wrapper:e}=t.components||{};return e?(0,n.jsx)(e,{...t,children:(0,n.jsx)(c,{...t})}):c(t)}function k(t,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+t+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return _(y);})();\n;return Component;",[552],"https://www.epicreact.dev/workshops/react-suspense/formal-status",{"_9":499,"_500":554,"_502":555},"/app/01.03.problem/test/",[556],"status.test.ts",{"_9":499,"_500":558},"/app/01.03.problem/","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/03.problem.status?view=editor&title=Formal+Status+%28problem%29",{"_20":43,"_160":377,"_477":561,"_22":44,"_24":45,"_479":562,"_494":563,"_497":565,"_505":568,"_508":570,"_269":291,"_271":317,"_9":290,"_522":-5},"03.solution.status","var Component=(()=>{var h=Object.create;var s=Object.defineProperty;var f=Object.getOwnPropertyDescriptor;var m=Object.getOwnPropertyNames;var l=Object.getPrototypeOf,x=Object.prototype.hasOwnProperty;var w=(e,t)=>()=>(t||e((t={exports:{}}).exports,t),t.exports),_=(e,t)=>{for(var n in t)s(e,n,{get:t[n],enumerable:!0})},a=(e,t,n,i)=>{if(t&&typeof t==\"object\"||typeof t==\"function\")for(let r of m(t))!x.call(e,r)&&r!==n&&s(e,r,{get:()=>t[r],enumerable:!(i=f(t,r))||i.enumerable});return e};var j=(e,t,n)=>(n=e!=null?h(l(e)):{},a(t||!e||!e.__esModule?s(n,\"default\",{value:e,enumerable:!0}):n,e)),b=e=>a(s({},\"__esModule\",{value:!0}),e);var p=w((F,c)=>{c.exports=_jsx_runtime});var M={};_(M,{default:()=>u,frontmatter:()=>g});var o=j(p()),g=void 0;function d(e){let t={h1:\"h1\",p:\"p\",...e.components},{EpicVideo:n}=t;return n||E(\"EpicVideo\",!0),(0,o.jsxs)(o.Fragment,{children:[(0,o.jsx)(t.h1,{children:\"Formal Status\"}),`\n`,(0,o.jsx)(n,{url:\"https://www.epicreact.dev/workshops/react-suspense/formal-status/solution\"}),`\n`,(0,o.jsx)(t.p,{children:`\\u{1F468}\\u200D\\u{1F4BC} Great. That feels much better defined than what we had before. That prepares\nus well for the next step.`})]})}function u(e={}){let{wrapper:t}=e.components||{};return t?(0,o.jsx)(t,{...e,children:(0,o.jsx)(d,{...e})}):d(e)}function E(e,t){throw new Error(\"Expected \"+(t?\"component\":\"object\")+\" `\"+e+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return b(M);})();\n;return Component;",[564],"https://www.epicreact.dev/workshops/react-suspense/formal-status/solution",{"_9":499,"_500":566,"_502":567},"/app/01.03.solution/test/",[556],{"_9":499,"_500":569},"/app/01.03.solution/","https://stackblitz.com/github/epicweb-dev/react-suspense/tree/main/exercises/01.fetching/03.solution.status?view=editor&title=Formal+Status+%28solution%29",{"_271":316,"_268":572,"_290":584},{"_20":47,"_160":379,"_477":573,"_22":48,"_24":49,"_479":574,"_494":575,"_497":577,"_505":581,"_508":583,"_269":291,"_271":316,"_9":268,"_510":51},"04.problem.util","var Component=(()=>{var p=Object.create;var s=Object.defineProperty;var u=Object.getOwnPropertyDescriptor;var b=Object.getOwnPropertyNames;var y=Object.getPrototypeOf,m=Object.prototype.hasOwnProperty;var v=(n,e)=>()=>(e||n((e={exports:{}}).exports,e),e.exports),f=(n,e)=>{for(var l in e)s(n,l,{get:e[l],enumerable:!0})},c=(n,e,l,o)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let r of b(e))!m.call(n,r)&&r!==l&&s(n,r,{get:()=>e[r],enumerable:!(o=u(e,r))||o.enumerable});return n};var k=(n,e,l)=>(l=n!=null?p(y(n)):{},c(e||!n||!n.__esModule?s(l,\"default\",{value:n,enumerable:!0}):l,n)),w=n=>c(s({},\"__esModule\",{value:!0}),n);var i=v((V,t)=>{t.exports=_jsx_runtime});var x={};f(x,{default:()=>h,frontmatter:()=>E});var a=k(i()),E=void 0;function d(n){let e={code:\"code\",h1:\"h1\",p:\"p\",pre:\"pre\",span:\"span\",...n.components},{EpicVideo:l}=e;return l||A(\"EpicVideo\",!0),(0,a.jsxs)(a.Fragment,{children:[(0,a.jsx)(e.h1,{children:\"Utility\"}),`\n`,(0,a.jsx)(l,{url:\"https://www.epicreact.dev/workshops/react-suspense/utility\"}),`\n`,(0,a.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} With what you've built so far, we want you to make a reusable utility for\nthis use case. We want you to call it `,(0,a.jsx)(e.code,{children:\"use\"}),` and it should take a promise and\nreturn the `,(0,a.jsx)(e.code,{children:\"Value\"}),\" from the promise.\"]}),`\n`,(0,a.jsxs)(e.p,{children:[`The only way we can do this is by tracking some values which we'll monkey-patch\nonto the `,(0,a.jsx)(e.code,{children:\"promise\"}),` itself. So Kellie's added a special type for you to use to\nmake TypeScript happier with the hackery we plan to perform for this simplified\nversion of `,(0,a.jsx)(e.code,{children:\"use\"}),\".\"]}),`\n`,(0,a.jsx)(e.p,{children:\"\\u{1F9DD}\\u200D\\u2642\\uFE0F Here's a good start for you:\"}),`\n`,(0,a.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,a.jsxs)(e.code,{children:[(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"type\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"UsePromise\"}),\"<\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\"> \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Promise\"}),\"<\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\"> \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"&\"}),\" {\",`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:[\"\t\",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"status\"}),(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",\"'\",(0,a.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"pending\"}),\"'\",\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"|\"}),\" \",\"'\",(0,a.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"fulfilled\"}),\"'\",\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"|\"}),\" \",\"'\",(0,a.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"rejected\"}),\"'\",`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:[\"\t\",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"value\"}),(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:[\"\t\",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"reason\"}),(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0C)\"},children:\"unknown\"}),`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"5\",children:[\"}\",`\n`]}),(0,a.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"6\",children:`\n`}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"7\",children:[(0,a.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"function\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"use\"}),\"<\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\">(\",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"promise\"}),(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Promise\"}),\"<\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\">)\",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\" {\",`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"8\",children:[\"\t\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"const\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"usePromise\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"promise\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"as\"}),\" \",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"UsePromise\"}),\"<\",(0,a.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Value\"}),\">\",`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"9\",children:[\"\t\",(0,a.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// throw stuff, .then stuff, and return Value!\"}),`\n`]}),(0,a.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"10\",children:[\"}\",`\n`]})]})}),`\n`,(0,a.jsxs)(e.p,{children:[`That should get you a good start. When you're done, you should be able to remove\na bunch of our code and replace it with a `,(0,a.jsx)(e.code,{children:\"use\"}),\" call. 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01. Data fetching/Elaboration