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Recorded on 26 October 2026, unchanged since

Entry #204 of UpFork’s ledger · A lesson's version: expo-haptics on the web calls navigator.vibrate, which Chrome blocks with a console error until the first tap Open it

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Recorded: 26 Oct 2026, 13:10 UTC
Signed with: k1 · Ed25519
Entry hash: a39b9b1a9d9d0102bf2386425b45bc2f73794a1e40da43d7bc884b7bfecbd584
Before it: 4a0d51f43cdc5c987e2cc4da6b7ddddae6381fb9a1d4285ac614d3165b73f581
Record hash: a829d01d3c08e3599a13921b149a5b5cb2089169b7b11a2a5e5a5636e805ca5f
Signature: 52Svqcyph7Ejb4lugMSgtYi7bjJk+FSKMwR0wq10pRhpaBiJ7H5y7uH9zEo+2f8AH11x3dFA3jfRkr5mtn3iAA==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "arc-picker-a-curved-dial-for-react-native-and-expo-and-eight-traps-on-the-we",
  "articleRevision": 1,
  "assumed": "haptics on the web would at worst do nothing, so the dial could tick on every platform.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "the console errors from the build's wheel and keyboard test; arc-picker.tsx lines 139–140.",
  "fix": "`CAN_BUZZ = Platform.OS !== 'web'`, so the ticks run on phones only. Desktops can't vibrate anyway.",
  "happened": "turning the dial with the mouse wheel and the arrow keys, before any click on the page, logged this console error: \"Blocked call to navigator.vibrate because user hasn't tapped on the frame or any embedded frame yet\".",
  "kind": "tools",
  "learnedBy": "ai",
  "lesson": "L-QWVT",
  "packages": "expo-haptics@57.0",
  "product": "arc-picker-react-native",
  "productRevision": 1,
  "publishedAt": "2026-10-26T13:10:04.528Z",
  "site": "https://upfork.dev",
  "title": "expo-haptics on the web calls navigator.vibrate, which Chrome blocks with a console error until the first tap",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-QWVT",
  "version": 1,
  "why": ""
}