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So yes, our users want a component that displays\nwhether they're on a narrow screen. We're going to build this into a more\ngeneric hook that will allow us to determine any media query's match and also\nkeep the state in sync with the media query. And you're going to need to use\n`,(0,n.jsx)(e.code,{children:\"useSyncExternalStore\"}),\" to do it.\"]}),`\n`,(0,n.jsx)(e.p,{children:`Go ahead and follow the emoji instructions. You'll know you got it right when\nyou resize your screen and the text changes.`}),`\n`,(0,n.jsx)(\"callout-info\",{class:\"aside\",children:(0,n.jsxs)(e.p,{children:[`\\u{1F989} If we really were just trying to display some different text based on the\nscreen size, we could use CSS media queries and not have to write any\nJavaScript at all. But sometimes we need to know the state of a media query in\nJavaScript for more complex interactions, so we're going to use a simple\nexample to demonstrate how to do this to handle those cases and we'll be using\n`,(0,n.jsx)(e.code,{children:\"useSyncExternalStore\"}),\" for that.\"]})})]})}function h(o={}){let{wrapper:e}=o.components||{};return e?(0,n.jsx)(e,{...o,children:(0,n.jsx)(d,{...o})}):d(o)}function S(o,e){throw new Error(\"Expected \"+(e?\"component\":\"object\")+\" `\"+o+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return v(k);})();\n;return Component;","epicVideoEmbeds",[593],"https://www.epicreact.dev/workshops/advanced-react-apis/usesyncexternalstore","test",{"_9":596,"_597":598,"_599":600},"browser","pathname","/app/09.01.problem/test/","testFiles",[601],"sync-media-query.test.ts","dev",{"_9":596,"_597":604},"/app/09.01.problem/","stackBlitzUrl","https://stackblitz.com/github/epicweb-dev/advanced-react-apis/tree/main/exercises/09.sync-external/01.problem.sub?view=editor&title=useSyncExternalStore+%28problem%29","solutionName",{"_20":147,"_168":552,"_574":609,"_22":148,"_24":149,"_576":610,"_591":611,"_594":613,"_602":616,"_605":618,"_274":412,"_276":275,"_9":343,"_619":-5},"01.solution.sub","var Component=(()=>{var h=Object.create;var s=Object.defineProperty;var l=Object.getOwnPropertyDescriptor;var w=Object.getOwnPropertyNames;var x=Object.getPrototypeOf,m=Object.prototype.hasOwnProperty;var f=(e,n)=>()=>(n||e((n={exports:{}}).exports,n),n.exports),_=(e,n)=>{for(var t in n)s(e,t,{get:n[t],enumerable:!0})},i=(e,n,t,c)=>{if(n&&typeof n==\"object\"||typeof n==\"function\")for(let o of w(n))!m.call(e,o)&&o!==t&&s(e,o,{get:()=>n[o],enumerable:!(c=l(n,o))||c.enumerable});return e};var j=(e,n,t)=>(t=e!=null?h(x(e)):{},i(n||!e||!e.__esModule?s(t,\"default\",{value:e,enumerable:!0}):t,e)),y=e=>i(s({},\"__esModule\",{value:!0}),e);var d=f((v,a)=>{a.exports=_jsx_runtime});var k={};_(k,{default:()=>u,frontmatter:()=>E});var r=j(d()),E=void 0;function p(e){let n={h1:\"h1\",p:\"p\",...e.components},{EpicVideo:t}=n;return t||g(\"EpicVideo\",!0),(0,r.jsxs)(r.Fragment,{children:[(0,r.jsx)(n.h1,{children:\"useSyncExternalStore\"}),`\n`,(0,r.jsx)(t,{url:\"https://www.epicreact.dev/workshops/advanced-react-apis/usesyncexternalstore/solution\"}),`\n`,(0,r.jsx)(n.p,{children:\"\\u{1F468}\\u200D\\u{1F4BC} Great work! Our users will now know whether they're on a narrow screen \\u{1F921}\"})]})}function u(e={}){let{wrapper:n}=e.components||{};return n?(0,r.jsx)(n,{...e,children:(0,r.jsx)(p,{...e})}):p(e)}function g(e,n){throw new Error(\"Expected \"+(n?\"component\":\"object\")+\" `\"+e+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return y(k);})();\n;return Component;",[612],"https://www.epicreact.dev/workshops/advanced-react-apis/usesyncexternalstore/solution",{"_9":596,"_597":614,"_599":615},"/app/09.01.solution/test/",[601],{"_9":596,"_597":617},"/app/09.01.solution/","https://stackblitz.com/github/epicweb-dev/advanced-react-apis/tree/main/exercises/09.sync-external/01.solution.sub?view=editor&title=useSyncExternalStore+%28solution%29","problemName",{"_276":283,"_273":621,"_343":632},{"_20":151,"_168":554,"_574":622,"_22":152,"_24":153,"_576":623,"_591":624,"_594":626,"_602":629,"_605":631,"_274":412,"_276":283,"_9":273,"_607":155},"02.problem.util","var Component=(()=>{var h=Object.create;var s=Object.defineProperty;var u=Object.getOwnPropertyDescriptor;var b=Object.getOwnPropertyNames;var m=Object.getPrototypeOf,y=Object.prototype.hasOwnProperty;var v=(a,e)=>()=>(e||a((e={exports:{}}).exports,e),e.exports),k=(a,e)=>{for(var r in e)s(a,r,{get:e[r],enumerable:!0})},c=(a,e,r,o)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let l of b(e))!y.call(a,l)&&l!==r&&s(a,l,{get:()=>e[l],enumerable:!(o=u(e,l))||o.enumerable});return a};var f=(a,e,r)=>(r=a!=null?h(m(a)):{},c(e||!a||!a.__esModule?s(r,\"default\",{value:a,enumerable:!0}):r,a)),x=a=>c(s({},\"__esModule\",{value:!0}),a);var i=v((D,t)=>{t.exports=_jsx_runtime});var g={};k(g,{default:()=>p,frontmatter:()=>w});var n=f(i()),w=void 0;function d(a){let e={code:\"code\",h1:\"h1\",p:\"p\",pre:\"pre\",span:\"span\",...a.components},{EpicVideo:r}=e;return r||N(\"EpicVideo\",!0),(0,n.jsxs)(n.Fragment,{children:[(0,n.jsx)(e.h1,{children:\"Make Store Utility\"}),`\n`,(0,n.jsx)(r,{url:\"https://www.epicreact.dev/workshops/advanced-react-apis/make-store-utility\"}),`\n`,(0,n.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} We want to make this utility generally useful so we can use it for any media\nquery. So please stick most of our logic in a `,(0,n.jsx)(e.code,{children:\"makeMediaQueryStore\"}),` function\nand have that return a custom hook people can use to keep track of the current\nmedia query's matching state.`]}),`\n`,(0,n.jsx)(e.p,{children:\"It'll be something like this:\"}),`\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:\"export\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"function\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"makeMediaQueryStore\"}),\"(\",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"mediaQuery\"}),(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\":\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0C)\"},children:\"string\"}),\") {\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// ...\"}),`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:[\"}\",`\n`]}),(0,n.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:`\n`}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"5\",children:[(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"const\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"useNarrowMediaQuery\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"makeMediaQueryStore\"}),\"(\",\"'\",(0,n.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"(max-width: 600px)\"}),\"'\",\")\",`\n`]}),(0,n.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"6\",children:`\n`}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"7\",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\":\"8\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"const\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"isNarrow\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,n.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"useNarrowMediaQuery\"}),\"()\",`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"9\",children:[\"\t\",(0,n.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// ...\"}),`\n`]}),(0,n.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"10\",children:[\"}\",`\n`]})]})})]})}function p(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 x(g);})();\n;return Component;",[625],"https://www.epicreact.dev/workshops/advanced-react-apis/make-store-utility",{"_9":596,"_597":627,"_599":628},"/app/09.02.problem/test/",[601],{"_9":596,"_597":630},"/app/09.02.problem/","https://stackblitz.com/github/epicweb-dev/advanced-react-apis/tree/main/exercises/09.sync-external/02.problem.util?view=editor&title=Make+Store+Utility+%28problem%29",{"_20":155,"_168":554,"_574":633,"_22":156,"_24":157,"_576":634,"_591":635,"_594":637,"_602":640,"_605":642,"_274":412,"_276":283,"_9":343,"_619":-5},"02.solution.util","var Component=(()=>{var h=Object.create;var i=Object.defineProperty;var m=Object.getOwnPropertyDescriptor;var l=Object.getOwnPropertyNames;var f=Object.getPrototypeOf,x=Object.prototype.hasOwnProperty;var w=(e,t)=>()=>(t||e((t={exports:{}}).exports,t),t.exports),y=(e,t)=>{for(var n in t)i(e,n,{get:t[n],enumerable:!0})},a=(e,t,n,s)=>{if(t&&typeof t==\"object\"||typeof t==\"function\")for(let r of l(t))!x.call(e,r)&&r!==n&&i(e,r,{get:()=>t[r],enumerable:!(s=m(t,r))||s.enumerable});return e};var _=(e,t,n)=>(n=e!=null?h(f(e)):{},a(t||!e||!e.__esModule?i(n,\"default\",{value:e,enumerable:!0}):n,e)),j=e=>a(i({},\"__esModule\",{value:!0}),e);var d=w((v,c)=>{c.exports=_jsx_runtime});var g={};y(g,{default:()=>p,frontmatter:()=>b});var o=_(d()),b=void 0;function u(e){let t={h1:\"h1\",p:\"p\",...e.components},{EpicVideo:n}=t;return n||M(\"EpicVideo\",!0),(0,o.jsxs)(o.Fragment,{children:[(0,o.jsx)(t.h1,{children:\"Make Store Utility\"}),`\n`,(0,o.jsx)(n,{url:\"https://www.epicreact.dev/workshops/advanced-react-apis/make-store-utility/solution\"}),`\n`,(0,o.jsx)(t.p,{children:`\\u{1F468}\\u200D\\u{1F4BC} Great! With that we now have a reusable utility and can use this to subscribe\nto any media query!`})]})}function p(e={}){let{wrapper:t}=e.components||{};return t?(0,o.jsx)(t,{...e,children:(0,o.jsx)(u,{...e})}):u(e)}function M(e,t){throw new Error(\"Expected \"+(t?\"component\":\"object\")+\" `\"+e+\"` to be defined: you likely forgot to import, pass, or provide it.\")}return j(g);})();\n;return Component;",[636],"https://www.epicreact.dev/workshops/advanced-react-apis/make-store-utility/solution",{"_9":596,"_597":638,"_599":639},"/app/09.02.solution/test/",[601],{"_9":596,"_597":641},"/app/09.02.solution/","https://stackblitz.com/github/epicweb-dev/advanced-react-apis/tree/main/exercises/09.sync-external/02.solution.util?view=editor&title=Make+Store+Utility+%28solution%29",{"_276":295,"_273":644,"_343":655},{"_20":159,"_168":556,"_574":645,"_22":160,"_24":161,"_576":646,"_591":647,"_594":649,"_602":652,"_605":654,"_274":412,"_276":295,"_9":273,"_607":163},"03.problem.ssr","var Component=(()=>{var b=Object.create;var s=Object.defineProperty;var v=Object.getOwnPropertyDescriptor;var y=Object.getOwnPropertyNames;var u=Object.getPrototypeOf,m=Object.prototype.hasOwnProperty;var g=(n,e)=>()=>(e||n((e={exports:{}}).exports,e),e.exports),f=(n,e)=>{for(var a in e)s(n,a,{get:e[a],enumerable:!0})},c=(n,e,a,l)=>{if(e&&typeof e==\"object\"||typeof e==\"function\")for(let o of y(e))!m.call(n,o)&&o!==a&&s(n,o,{get:()=>e[o],enumerable:!(l=v(e,o))||l.enumerable});return n};var w=(n,e,a)=>(a=n!=null?b(u(n)):{},c(e||!n||!n.__esModule?s(a,\"default\",{value:n,enumerable:!0}):a,n)),k=n=>c(s({},\"__esModule\",{value:!0}),n);var i=g((x,t)=>{t.exports=_jsx_runtime});var N={};f(N,{default:()=>p,frontmatter:()=>E});var r=w(i()),E=void 0;function d(n){let e={a:\"a\",code:\"code\",h1:\"h1\",p:\"p\",pre:\"pre\",span:\"span\",...n.components},{EpicVideo:a,PrevDiffLink:l}=e;return a||h(\"EpicVideo\",!0),l||h(\"PrevDiffLink\",!0),(0,r.jsxs)(r.Fragment,{children:[(0,r.jsx)(e.h1,{children:\"Handling Server Rendering\"}),`\n`,(0,r.jsx)(a,{url:\"https://www.epicreact.dev/workshops/advanced-react-apis/handling-server-rendering\"}),`\n`,(0,r.jsxs)(e.p,{children:[`\\u{1F468}\\u200D\\u{1F4BC} We don't currently do any server rendering, but in the future we may want to\nand this requires some special handling with `,(0,r.jsx)(e.code,{children:\"useSyncExternalStore\"}),\".\"]}),`\n`,(0,r.jsxs)(e.p,{children:[\"\\u{1F9DD}\\u200D\\u2642\\uFE0F \",(0,r.jsx)(l,{children:\"I've simulated a server rendering environment\"}),` by\nadding some code to the bottom of our file. First, we render the `,(0,r.jsx)(e.code,{children:\"\"}),` to a\nstring, then we set that to the `,(0,r.jsx)(e.code,{children:\"innerHTML\"}),\" of our \",(0,r.jsx)(e.code,{children:\"rootEl\"}),`. Then we call\n`,(0,r.jsx)(e.code,{children:\"hydrateRoot\"}),\" to rehydrate our application.\"]}),`\n`,(0,r.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,r.jsxs)(e.code,{children:[(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"const\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"rootEl\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"document\"}),\".\",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"createElement\"}),\"(\",\"'\",(0,r.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"div\"}),\"'\",\")\",`\n`]}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"2\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"document\"}),\".\",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"body\"}),\".\",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"append\"}),\"(\",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"rootEl\"}),\")\",`\n`]}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"3\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// simulate server rendering\"}),`\n`]}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"4\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"rootEl\"}),\".\",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"innerHTML\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"=\"}),\" (\",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"await\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"import\"}),\"(\",\"'\",(0,r.jsx)(e.span,{style:{color:\"var(--base0B)\"},children:\"react-dom/server\"}),\"'\",\")).\",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"renderToString\"}),\"(<\",(0,r.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"App\"}),\" />)\",`\n`]}),(0,r.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"5\",children:`\n`}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"6\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base03)\"},children:\"// simulate taking a while for the JS to load...\"}),`\n`]}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"7\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"await\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"new\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"Promise\"}),\"((\",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"resolve\"}),\") \",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"=>\"}),\" \",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"setTimeout\"}),\"(\",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"resolve\"}),\", \",(0,r.jsx)(e.span,{style:{color:\"var(--base09)\"},children:\"1000\"}),\"))\",`\n`]}),(0,r.jsx)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"8\",children:`\n`}),(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"9\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"ReactDOM\"}),\".\",(0,r.jsx)(e.span,{style:{color:\"var(--base0D)\"},children:\"hydrateRoot\"}),\"(\",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"rootEl\"}),\", <\",(0,r.jsx)(e.span,{style:{color:\"var(--base0A)\"},children:\"App\"}),\" />)\",`\n`]})]})}),`\n`,(0,r.jsx)(e.p,{children:`\\u{1F468}\\u200D\\u{1F4BC} This is a bit of a hack, but it's a good way to simulate server rendering\nand ensure that our application works in a server rendering situation.`}),`\n`,(0,r.jsxs)(e.p,{children:[`Because the server won't know whether a media query matches, we can't use the\n`,(0,r.jsx)(e.code,{children:\"getServerSnapshot()\"}),\" argument of \",(0,r.jsx)(e.code,{children:\"useSyncExternalStore\"}),`. Instead, we'll leave\nthat argument off, and wrap our `,(0,r.jsx)(e.code,{children:\"\"}),` in a\n`,(0,r.jsx)(e.a,{href:\"https://react.dev/reference/react/Suspense\",children:(0,r.jsx)(e.code,{children:\"\"})}),` component with a\nfallback of `,(0,r.jsx)(e.code,{children:'\"\"'}),\" (we won't show anything until the client hydrates).\"]}),`\n`,(0,r.jsxs)(e.p,{children:[`With this, you'll notice there's an error in the console. Nothing's technically\nwrong, but React logs this in this situation (I honestly personally disagree\nthat they should do this, but \\u{1F937}\\u200D\\u2642\\uFE0F). So as extra credit, you can add an\n`,(0,r.jsx)(e.code,{children:\"onRecoverableError\"}),\" function to the \",(0,r.jsx)(e.code,{children:\"hydrateRoot\"}),` call and if the given error\nincludes the string `,(0,r.jsx)(e.code,{children:\"'Missing getServerSnapshot'\"}),` then you can return,\notherwise, log the error.`]}),`\n`,(0,r.jsx)(e.p,{children:\"Good luck!\"}),`\n`,(0,r.jsx)(e.pre,{\"data-line-numbers\":\"true\",\"data-lang\":\"tsx\",style:{color:\"var(--base05)\",backgroundColor:\"var(--base00)\"},children:(0,r.jsxs)(e.code,{children:[(0,r.jsxs)(e.span,{className:\"codeblock-line\",\"data-line-number\":\"1\",children:[(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"import\"}),\" { \",(0,r.jsx)(e.span,{style:{color:\"var(--base08)\"},children:\"hydrateRoot\"}),\" } \",(0,r.jsx)(e.span,{style:{color:\"var(--base0E)\"},children:\"from\"}),\" 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09. Sync External State/Elaboration