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| author | Adam Soltys <[email protected]> | 2026-06-23 23:05:52 -0700 |
|---|---|---|
| committer | Adam Soltys <[email protected]> | 2026-06-23 23:05:52 -0700 |
| commit | d5e55c9c577feb6f8000bad3c37045a2cd7c9b4c (patch) | |
| tree | c4260128cae53c949c29e1fe802c4d4a5aca94d0 /src/api.js | |
| parent | ca7d85e8603ad5ee6a31afbf56777cedfc3931b5 (diff) | |
| download | coinosv3-d5e55c9c577feb6f8000bad3c37045a2cd7c9b4c.tar.gz coinosv3-d5e55c9c577feb6f8000bad3c37045a2cd7c9b4c.zip | |
Add QR scanner to the send page (lazy-loaded decoder)
Scan a Bitcoin address, a BIP21 URI (fills address + amount), or a
signed-transaction QR (opens a broadcast confirmation, then relays it)
from a viewfinder button on the Send form.
Decoder strategy keeps the main bundle small:
- Prefer the native BarcodeDetector (Chrome desktop/Android) — no lib.
- Otherwise lazy-load jsQR from a separate dist/jsqr.js, only when the
scanner is opened. jsQR stays out of index.html (~424 KB vs ~551 KB)
and off the initial load.
- The service worker precaches jsqr.js so offline scanning works for
installed PWAs on browsers without BarcodeDetector.
The scanner needs a camera + secure context, so it never shows on a
standalone file:// page; offline air-gapped signing is unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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