Polyatomics

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_319":320,"_321":322},"routes/_app.x.$handle.$name",{"_101":100,"_32":46,"_110":91,"_27":111,"_13":14,"_112":-5,"_11":113,"_114":115,"_116":117,"_118":119,"_120":121,"_20":-5,"_122":-5,"_123":-5,"_124":25,"_125":126,"_127":60,"_128":-5,"_129":-5,"_130":131},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_44":45,"_32":46,"_39":47,"_48":-5,"_49":25,"_50":51,"_52":51,"_53":54,"_55":-5,"_18":56,"_57":58,"_59":60,"_61":-5,"_62":-5,"_63":64,"_65":66,"_67":68,"_69":70,"_71":72,"_73":-5,"_74":75,"_76":75,"_77":78,"_79":78,"_80":78,"_81":75,"_82":75,"_83":84,"_85":86,"_87":88,"_89":25},"version",230,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":33,"_34":35,"_36":38,"_39":40,"_41":14,"_42":43,"_24":25},"previous",{"_30":31,"_32":33,"_34":35,"_36":37},"deleted",false,"deletedHere","path","frontend/components/NameQuizScreen.tsx","latestPath","fileId","1e9ec6a4-a3f5-11f1-a47f-1607ee4eb77e","name","NameQuizScreen.tsx","fileType","script","content","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState } from \"https://esm.sh/react@18.2.0\";\nimport { Clock3, Flame, X } from \"https://esm.sh/lucide-react@0.468.0?deps=react@18.2.0,react-dom@18.2.0\";\nimport { formatChargeInput, formatFormula } from \"../lib/quiz.ts\";\nimport type { Config, Ion } from \"../lib/polyatomics.ts\";\n\ntype Session = { config: Config; ion: Ion; index: number; pool: Ion[]; nameAnswer: string; checked: boolean; gaveUp: boolean; correctAnimating: boolean; answerCorrect: boolean; progress: number; attempts: number; correct: number; streak: number; timeLeft: number | null; setName: (value: string) => void; submit: () => void; skip: () => void; giveUp: () => void; end: () => void };\n\nexport function NameQuizScreen({ session }: { session: Session }) {\n const [confirmEnd, setConfirmEnd] = useState(false);\n const disabled = session.gaveUp || session.correctAnimating;\n const revealed = session.gaveUp ? session.ion.name : session.nameAnswer;\n return

{session.config.seconds !== null && <>{Math.floor((session.timeLeft ?? 0) / 60)}:{String((session.timeLeft ?? 0) % 60).padStart(2, \"0\")}}{session.streak}

Identify the ion

{formatFormula(session.ion.formula)}

{formatChargeInput(session.ion.charge)}

Name

{ if (el) { (window as any).__ionNameInput = el; } }} value={revealed} disabled={disabled} onChange={(e) => session.setName(e.target.value)} placeholder=\"nitrate\" style={{color: session.gaveUp ? \"#3c3c3c\" : disabled ? \"#777\" : \"#3c3c3c\", WebkitTextFillColor: session.gaveUp ? \"#3c3c3c\" : disabled ? \"#777\" : \"#3c3c3c\", opacity: 1}} className=\"w-full bg-transparent text-[30px] font-bold tracking-tight outline-none placeholder:text-[#a9adb1] disabled:cursor-not-allowed\" />

{session.checked && !session.answerCorrect && !session.gaveUp &&

Not quite. Try again.

}

{session.attempts} attempts•{session.attempts ? Math.round(session.correct / session.attempts * 100) : 0}% accuracy

{confirmEnd &&

{ if (e.target === e.currentTarget) setConfirmEnd(false); }}>

End session?

Your current progress will be included in the results.

}

;\n}","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState } from \"https://esm.sh/react@18.2.0\";\nimport { Clock3, Flame, X } from \"https://esm.sh/lucide-react@0.468.0?deps=react@18.2.0,react-dom@18.2.0\";\nimport { formatChargeInput, formatFormula } from \"../lib/quiz.ts\";\nimport type { Config, Ion } from \"../lib/polyatomics.ts\";\n\ntype Session = { config: Config; ion: Ion; index: number; pool: Ion[]; nameAnswer: string; checked: boolean; gaveUp: boolean; correctAnimating: boolean; answerCorrect: boolean; progress: number; attempts: number; correct: number; streak: number; timeLeft: number | null; setName: (value: string) => void; submit: () => void; skip: () => void; giveUp: () => void; end: () => void };\n\nexport function NameQuizScreen({ session }: { session: Session }) {\n const [confirmEnd, setConfirmEnd] = useState(false);\n const disabled = session.gaveUp || session.correctAnimating;\n const revealed = session.gaveUp ? session.ion.name : session.nameAnswer;\n return

{session.config.seconds !== null && <>{Math.floor((session.timeLeft ?? 0) / 60)}:{String((session.timeLeft ?? 0) % 60).padStart(2, \"0\")}}{session.streak}

{formatFormula(session.ion.formula)}^{{formatChargeInput(session.ion.charge)}}

Name

{session.checked && !session.answerCorrect && !session.gaveUp &&

Not quite. Try again.

}

{session.attempts} attempts•{session.attempts ? Math.round(session.correct / session.attempts * 100) : 0}% accuracy

{confirmEnd &&

{ if (e.target === e.currentTarget) setConfirmEnd(false); }}>

End session?

Your current progress will be included in the results.

}

;\n}","createdAt",["D",1788041016430],"branchVersion","branchId","91efcfc2-57fc-4e40-a802-a0a982202b7c","id","b7e65ae6-0a45-4ddf-9a18-259d42abc50b","polyatomics",["D",1787973066715],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Practice polyatomic ion formulas and charges","imageUrl","a0dbc0e3-e526-4d2e-b19c-fcb458a27a4e","pinnedFileId","01a04b7f-e043-776f-9b1e-67170ce79a7b","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a04933-e278-70de-a7be-b64137dd639b","tursoName","b7e65ae60a454ddf9a18259d42abc50b","tursoHostname","b7e65ae60a454ddf9a18259d42abc50b-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789448471428],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_101":100,"_109":105},"org",{"_101":100,"_102":103,"_104":105,"_18":56,"_106":107,"_108":25},"branch",{"_13":90,"_32":91,"_44":43,"_92":45,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":46,"_99":100},"isOwned",242,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","altors_graphika","handle","displayName","Altors-Graphika","avatar","https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/d88c49d9-df42-4251-2a99-48ca93b86e01/square512?exp=1789545599&sig=9b74abe859877440c0441a9b0a86c6c5dc8d70da361efd1ccce49490a0b4b289","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_44":45,"_32":46,"_39":314,"_48":-5,"_49":25,"_50":51,"_52":51,"_53":54,"_55":-5,"_18":56,"_57":58,"_59":60,"_61":-5,"_62":-5,"_63":64,"_65":66,"_67":68,"_69":70,"_71":315,"_73":-5,"_74":75,"_76":75,"_77":78,"_79":78,"_80":78,"_81":75,"_82":75,"_83":316,"_85":317,"_87":318,"_89":25},"tree",[170,186,187],"files",[170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187],"counts",{"_160":64,"_161":151,"_162":64,"_163":164,"_165":166},"contents",[132,133,134],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_44":154,"_32":155,"_30":156,"_137":-5,"_42":43,"_41":151,"_139":60,"_39":157,"_13":64,"_34":158,"_36":-5,"_24":25,"_144":-5,"_27":159},{"_44":146,"_32":147,"_30":148,"_137":-5,"_42":43,"_41":149,"_139":60,"_39":150,"_13":151,"_34":20,"_36":152,"_24":25,"_144":-5,"_27":153},{"_44":135,"_32":136,"_30":58,"_137":-5,"_42":43,"_41":138,"_139":60,"_39":140,"_13":141,"_34":142,"_36":143,"_24":25,"_144":46,"_27":145},"e9eb1765-be20-45bc-b40c-2fe4c6e163d4","index.ts","parentId",169,"latest",["D",1788037454141],9,"http","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\n\nconst app = new Hono();\n\napp.get(\"/\", (c) => c.html(Root()));\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n","label",[136],"8fd05197-c6e3-4b8e-b16a-e383aca59d99","README.md","01a04b7f-e043-776f-9b1e-61c237442125",146,["D",1788025063496],1,"# Polyatomics\n\nA focused practice app for memorizing common polyatomic ion formulas and charges.\n\n## Features\n\n- Practice 32 common polyatomic ions.\n- Choose a time limit or practice without a timer.\n- Practice by category or select individual ions.\n- Loop mode continuously cycles through the selected pool.\n- Immediate feedback shows the correct formula and charge.\n- Session results include accuracy, correct answers, average answer time, and missed ions.\n- Installable as a PWA with update notifications.\n\n## Architecture\n\n```mermaid\ngraph LR\n Browser -->|GET /| Hono[\"index.ts\"]\n Hono -->|HTML shell| Root[\"frontend/root.tsx\"]\n Root --> Entry[\"frontend/index.tsx\"]\n Entry --> App[\"frontend/components/App.tsx\"]\n App --> Start[\"StartScreen.tsx\"]\n App --> Quiz[\"QuizScreen.tsx\"]\n App --> End[\"EndScreen.tsx\"]\n App --> Install[\"InstallNudge.tsx\"]\n App --> Session[\"hooks/useQuizSession.ts\"]\n Session --> Rules[\"lib/quiz.ts\"]\n Rules --> Data[\"lib/polyatomics.ts\"]\n```\n\n## File structure\n\n```text\nindex.ts\nfrontend/\n root.tsx # HTML shell and immutable asset URLs\n index.tsx # React entrypoint and service-worker registration\n manifest.webmanifest # PWA metadata\n favicon.svg # App icon\n favicon-green.svg # App icon used by the shell\n icon-192.svg\n icon-512.svg\n components/\n App.tsx # Composition/root component\n StartScreen.tsx # Session configuration\n QuizScreen.tsx # Question and answer UI\n EndScreen.tsx # Session results\n InstallNudge.tsx # Install/update UI\n hooks/\n useQuizSession.ts # Quiz state and transitions\n lib/\n polyatomics.ts # Ion data, types, and defaults\n quiz.ts # Pure quiz rules and formatting helpers\n```\n\n## Design principles\n\nThe UI components are intentionally thin. Quiz behavior lives in `useQuizSession`, while pure domain rules live in `lib/quiz.ts`. The ion dataset and shared types live in `lib/polyatomics.ts`, so other practice modes can reuse them without depending on the UI.\n\nThe app does not require application cookies or a login to practice. Browser persistence for the install prompt is treated as optional: if web storage is unavailable or blocked, the prompt simply falls back to its default behavior and the quiz remains usable.\n\n## Development\n\nThe HTTP entrypoint is `index.ts`. React components live under `frontend/components/`, with reusable state and domain logic under `frontend/hooks/` and `frontend/lib/`.\n\nThe app uses React 18, Hono, Twind, and immutable Val Town asset URLs.\n",[147],"aa37af58-90fd-4bfa-85a4-500c985f1deb","frontend","01a04b7f-e043-776f-9b1e-58a885ba27e3",["D",1787973066715],"directory",[155],"pulls","branches","forks","envVars",{"_167":64,"_169":64},"connections",{"_167":64,"_168":64},"count","unfilledCount","emptyCount",{"_44":154,"_32":155,"_30":156,"_137":-5,"_42":43,"_41":151,"_139":60,"_39":311,"_13":64,"_34":158,"_36":-5,"_24":25,"_144":-5,"_189":312,"_27":313},{"_44":307,"_32":276,"_30":269,"_137":156,"_42":43,"_41":151,"_139":60,"_39":308,"_13":64,"_34":158,"_36":-5,"_24":25,"_144":-5,"_189":309,"_27":310},{"_44":298,"_32":299,"_30":300,"_137":269,"_42":43,"_41":301,"_139":60,"_39":302,"_13":303,"_34":35,"_36":304,"_24":25,"_144":-5,"_189":305,"_27":306},{"_44":290,"_32":291,"_30":292,"_137":269,"_42":43,"_41":293,"_139":60,"_39":294,"_13":209,"_34":35,"_36":295,"_24":25,"_144":-5,"_189":296,"_27":297},{"_44":286,"_32":33,"_30":31,"_137":269,"_42":43,"_41":14,"_139":25,"_39":287,"_13":151,"_34":35,"_36":38,"_24":25,"_144":-5,"_189":288,"_27":289},{"_44":277,"_32":278,"_30":279,"_137":269,"_42":43,"_41":280,"_139":25,"_39":281,"_13":282,"_34":35,"_36":283,"_24":25,"_144":-5,"_189":284,"_27":285},{"_44":266,"_32":267,"_30":268,"_137":269,"_42":43,"_41":270,"_139":25,"_39":271,"_13":272,"_34":35,"_36":273,"_24":25,"_144":-5,"_189":274,"_27":275},{"_44":262,"_32":261,"_30":254,"_137":156,"_42":43,"_41":247,"_139":60,"_39":263,"_13":64,"_34":158,"_36":-5,"_24":25,"_144":-5,"_189":264,"_27":265},{"_44":251,"_32":252,"_30":253,"_137":254,"_42":43,"_41":255,"_139":60,"_39":256,"_13":257,"_34":35,"_36":258,"_24":25,"_144":-5,"_189":259,"_27":260},{"_44":246,"_32":237,"_30":231,"_137":156,"_42":43,"_41":247,"_139":60,"_39":248,"_13":64,"_34":158,"_36":-5,"_24":25,"_144":-5,"_189":249,"_27":250},{"_44":238,"_32":239,"_30":240,"_137":231,"_42":43,"_41":241,"_139":60,"_39":242,"_13":209,"_34":35,"_36":243,"_24":25,"_144":-5,"_189":244,"_27":245},{"_44":228,"_32":229,"_30":230,"_137":231,"_42":43,"_41":232,"_139":60,"_39":233,"_13":209,"_34":35,"_36":234,"_24":25,"_144":-5,"_189":235,"_27":236},{"_44":220,"_32":221,"_30":222,"_137":156,"_42":43,"_41":223,"_139":60,"_39":224,"_13":151,"_34":20,"_36":225,"_24":25,"_144":-5,"_189":226,"_27":227},{"_44":213,"_32":214,"_30":215,"_137":156,"_42":43,"_41":151,"_139":60,"_39":216,"_13":64,"_34":20,"_36":217,"_24":25,"_144":-5,"_189":218,"_27":219},{"_44":204,"_32":205,"_30":206,"_137":156,"_42":43,"_41":207,"_139":60,"_39":208,"_13":209,"_34":35,"_36":210,"_24":25,"_144":-5,"_189":211,"_27":212},{"_44":195,"_32":196,"_30":197,"_137":156,"_42":43,"_41":198,"_139":60,"_39":199,"_13":200,"_34":35,"_36":201,"_24":25,"_144":-5,"_189":202,"_27":203},{"_44":146,"_32":147,"_30":148,"_137":-5,"_42":43,"_41":149,"_139":60,"_39":192,"_13":151,"_34":20,"_36":152,"_24":25,"_144":-5,"_189":193,"_27":194},{"_44":135,"_32":136,"_30":58,"_137":-5,"_42":43,"_41":138,"_139":60,"_39":188,"_13":141,"_34":142,"_36":143,"_24":25,"_144":46,"_189":190,"_27":191},["D",1788037454141],"children",[],[136],["D",1788025063496],[],[147],"8a7077c9-c302-4867-9620-078644758112","root.tsx","01a04b7f-e043-776f-9b1e-554f5bc7b179",213,["D",1788040505046],22,"/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\nexport function Root() {\n return (\n <>\n {raw(\"\")}\n \n \n \n \n \n \n \n \n Polyatomics\n

Diff · v230