Fixed start-dev wrangler timeout: generated `.cache/wrangler.no-ai.json` now rebases `main` and assets paths so the CLI finds `src/index.ts`. | Dev Logs

Date: 2026-09-02 14:22 Summary: Fixed start-dev wrangler timeout: generated .cache/wrangler.no-ai.json now rebases main and assets paths so the CLI finds src/index.ts. Visibility: people

[question] start-dev: upload:r2:local succeeded, then “Dev server failed to become ready within timeout”

[try to solve]

Context

Local R2 seed finished 2080/2080. Wrangler then exited the wait loop after 90s. .run/wrangler-dev.log showed: The entry-point file at "src\index.ts" was not found.

Process

1. start:dev passes -c .cache/wrangler.no-ai.json. Wrangler CLI resolves main relative to the config file directory, not the repo root, so it looked for .cache/src/index.ts.
2. getPlatformProxy (seed) uses cwd, which is why the bucket fill still worked.
3. Rebased main → ../src/index.ts and assets.directory → ../public when writing the cache config. Seed stub main is ../scripts/lib/r2-seed-worker.mjs.
4. Added log fatal needles was not found / entry-point file so a missing entry fails fast instead of waiting 90s.
5. Verified npx wrangler dev --local -c .cache/wrangler.no-ai.json --port 8799 prints Ready on http://127.0.0.1:8799.

Root cause / analysis

Path base for wrangler CLI -c is the config file’s folder. Copying wrangler.jsonc into .cache/ without rewriting relative paths breaks main.

Solution

rebaseToConfigDir in scripts/lib/local-r2-platform-proxy.mjs. Retry with -NoBuild (and -NoSeedR2 if the mock bucket is already filled).

Notes / boundaries

GET / without Accept: text/html still 404 by design; open the URL in a browser.

[actions]

• Rebased generated wrangler paths; added fatal log needles for missing entry-point.