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feat(diag): install-time + uncaught-error diagnostics for the reroute chain

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2026-07-11 tester log showed the routing watcher and renderer-bus feeder
never installed (zero [feedpak-route]/[renderer-bus] lines) plus an
uncaught SyntaxError with no source location — nothing in the log said
why. New:

- global error/unhandledrejection tap logging message + filename:line:col
  (error events carry the location even for parse errors in other scripts)
- explicit install / NOT-installed lines for watcher and feeder (incl.
  loopback capability probe)
- DOMException detail (name/message/stack head) in the feeder retry warn
  — the console-message forward stringified it to [object DOMException]

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
OmikronApex
2026-07-11 17:32:05 +02:00
co-authored by Claude Fable 5
parent c02239813b
commit 6797c03603
1 changed files with 36 additions and 3 deletions
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static/app.js
+36 -3
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@@ -4852,9 +4852,31 @@ window.jucePlayer = jucePlayer;
// on a dead JUCE backing transport. This watcher migrates the loaded song
// between the two paths whenever the engine's running state changes, preserving
// playback position and play/pause state.
// [asio-diag] global error tap: the 2026-07-11 tester log showed an uncaught
// SyntaxError with no source location and the routing watcher/feeder never
// installing — an error event carries filename:line even for parse errors in
// other scripts, which console output does not. Unconditional (errors are
// rare; one line each) so a broken script can never hide itself again.
window.addEventListener('error', (e) => {
console.warn('[asio-diag] uncaught-error:', e.message,
'at', (e.filename || '<unknown>') + ':' + (e.lineno || 0) + ':' + (e.colno || 0));
});
window.addEventListener('unhandledrejection', (e) => {
const r = e.reason;
console.warn('[asio-diag] unhandled-rejection:',
(r && (r.name + ': ' + r.message)) || String(r));
});
(function _installJuceEngineRoutingWatcher() {
const juceApi = window.feedBackDesktop?.audio;
if (!juceApi || typeof juceApi.isAudioRunning !== 'function') return;
if (!juceApi || typeof juceApi.isAudioRunning !== 'function') {
// Expected in the Docker sphere; in the desktop app this means the
// preload bridge was missing when app.js ran — the whole exclusive
// reroute chain is dead and this line is the only witness.
console.log('[asio-diag] routing watcher NOT installed (no bridge: api=' + !!juceApi + ')');
return;
}
console.log('[asio-diag] routing watcher installed');
let _rerouteInFlight = false;
// URL that JUCE's loadBackingTrack *explicitly rejected* (ok === false —
@@ -5305,7 +5327,14 @@ window.jucePlayer = jucePlayer;
(function _installRendererBusFeeder() {
const api = window.feedBackDesktop?.audio;
if (!api || typeof api.setRendererBus !== 'function'
|| typeof api.pushRendererAudio !== 'function') return;
|| typeof api.pushRendererAudio !== 'function') {
console.log('[asio-diag] renderer-bus feeder NOT installed (api=' + !!api
+ ' setRendererBus=' + typeof api?.setRendererBus
+ ' pushRendererAudio=' + typeof api?.pushRendererAudio + ')');
return;
}
console.log('[asio-diag] renderer-bus feeder installed (loopback-capable='
+ (typeof window.navigator?.mediaDevices?.getDisplayMedia === 'function') + ')');
const TAP_WORKLET = `
class FeedbackBusTap extends AudioWorkletProcessor {
@@ -5592,7 +5621,11 @@ window.jucePlayer = jucePlayer;
}
}
} catch (e) {
console.warn('[renderer-bus] reevaluate failed (will retry):', e);
// Explicit name/message/stack head — the console-message forward
// stringifies a DOMException to the useless "[object DOMException]".
console.warn('[renderer-bus] reevaluate failed (will retry):',
(e && e.name ? e.name + ': ' + e.message : String(e)),
(e && e.stack ? '| ' + String(e.stack).split('\n')[1] : ''));
_mode = 'off';
// A partial engage may have left the bus enabled with no producer
// and the page muted — undo both so a failed tick can't strand