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fix(cli): default dev bundler to Turbopack (16.2.x panic no longer reproduces) #5206

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Merged
diegosouzapw merged 1 commit into from
Jun 28, 2026
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fix(cli): default dev bundler to Turbopack (16.2.x panic no longer reproduces) #5206

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20 changes: 13 additions & 7 deletions .env.example
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Original file line number Diff line number Diff line change
Expand Up @@ -111,13 +111,19 @@ PORT=20128
# Used by: src/app/api/v1/relay/chat/completions/route.ts
# RELAY_IP_PER_MINUTE=30

# Bundler selection for `npm run dev`. Set to 1 to opt into Turbopack.
# Default is 0 (webpack) because Turbopack 16.2.x panics on the OmniRoute
# module graph with "internal error: entered unreachable code: there must be
# a path to a root" (turbopack-core/module_graph/mod.rs:662). Same bug class
# the production Docker build worked around in PR #4052. Webpack starts
# slower but compiles cleanly. Re-enable once upstream Turbopack ships a fix.
OMNIROUTE_USE_TURBOPACK=0
# Bundler selection for `npm run dev`. Set to 0 to fall back to webpack.
# Default is 1 (Turbopack). PR #4092 had forced webpack because earlier
# Turbopack 16.2.x panicked on the OmniRoute module graph with "internal error:
# entered unreachable code: there must be a path to a root"
# (turbopack-core/module_graph/mod.rs:662). That panic no longer reproduces on
# the pinned Next 16.2.9 — verified across a broad cold-compile sweep (36
# dashboard routes + open-sse-heavy API routes incl. /api/v1/chat/completions,
# /api/v1/models, /api/mcp) and repeated HMR rebuilds: zero panics. Turbopack
# also keeps dev memory far lower on the edit→rebuild loop (HMR rebuild RSS stays
# ~flat vs webpack's monotonic growth), which mitigates the dev-server OOM on
# this 60+ route app. The production build still uses webpack (build pipeline is
# unaffected by this dev-only flag).
OMNIROUTE_USE_TURBOPACK=1

# Skip the SQLite integrity health check on startup (faster boot on large DBs).
# Used by: src/lib/db/core.ts, src/lib/db/healthCheck.ts. Set to 1 to skip.
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