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Every #[tauri::command] looks like dead code #1543
Description
tl;dr: in a Tauri app, callers and impact come back empty for every #[tauri::command], even when the whole frontend calls it.
Details here:
The frontend reaches Rust through a runtime IPC hop, so there's no call for tree-sitter to see. With tauri-specta there's a name change on top (get_mcp_port becomes getMcpPort), so even a name-based guess misses.
Repro, ~30 seconds, no Tauri toolchain needed
mkdir -p /tmp/tauri-probe/src-tauri/src /tmp/tauri-probe/src
cd /tmp/tauri-probe
cat > src-tauri/src/main.rs <<'EOF'
#[tauri::command]
fn get_mcp_port() -> u16 {
4000
}
fn main() {
tauri::Builder::default()
.invoke_handler(tauri::generate_handler![get_mcp_port])
.run(tauri::generate_context!())
.expect("error while running tauri application");
}
EOF
cat > src/app.ts <<'EOF'
import { invoke } from '@tauri-apps/api/core';
export async function loadPort(): Promise<number> {
return invoke('get_mcp_port');
}
EOF
cat > src-tauri/tauri.conf.json <<'EOF'
{
"productName": "tauri-probe",
"version": "0.1.0",
"identifier": "com.example.tauri-probe",
"build": { "frontendDist": "../dist" },
"app": { "windows": [{ "title": "tauri-probe" }] }
}
EOF
codegraph init && codegraph callers get_mcp_portOn main (c6aaa20): ℹ No callers found for "get_mcp_port", 6 nodes and 4 edges.
With #878: Callers of "get_mcp_port" (1): src/app.ts:1, 6 nodes and 5 edges.
On real apps
- Cmdr (
tauri-specta, Tauri 2 + Svelte 5, ~25k nodes): 291 commands gain their frontend callers, events bridge across the case change too. - clash-verge-rev (raw
invoke): 76 of 79 commands bridge through itscmds.tswrapper. - pot-desktop (raw
invoke): 3 of 3.
#878 has the fix: one new file, a 4-line registration, 23 tests, no new deps. Rebased on current main today.
Reframing my earlier #772, which asked whether you'd want this. Closing that one in favor of this.
Activity
fix(dead-code): exclude annotated Tauri commands (#1543) (#2019)
colbymchenry commentedon Sep 27, 2026
Thanks for the detailed report, @vdavid, and thanks for using CodeGraph! This is fixed on
mainby #2019: Rust functions annotated#[tauri::command]are now recorded as decorated entry points, so the dead-code report no longer lists them (they're invoked from the frontend at runtime). The fix will be in the next release.vdavid commentedon Sep 27, 2026
@colbymchenry, unfortunately, this doesn't solve my problem.
callersandimpactstill return nothing for a#[tauri::command]that the frontend calls. The repro in the issue body still givesNo callers found for "get_mcp_port"onmain, because #2019 marks commands as used but adds no edges from the frontendinvoke(...)calls. In my app Cmdr, that's ~290 commands whereimpactcan't see the frontend at all.Could you reopen this issue? Or I can open a new issue just for
callers/impactif you'd prefer.If you want the bridge in CodeGraph, I'm happy to rework my earlier PR #878 (got no reviews so far). My ideas:
tauri::commanddecorator to find commands, which removes the detection code from feat(tauri): cross-language IPC bridge resolver (#772) #878invoke('snake_name')first, andtauri-specta's camelCase names as a separate PRmain.And if an IPC bridge isn't something you want in CodeGraph, that's fine too. Just say so and I'll close #878.