# Dependency patches

## `@uswriting/exiftool@1.0.9` — stderr vs warnings

We do **not** use a `patch-package` diff here: the published `dist/*.js` files are one minified line each, so unified diffs are huge and hard to review.

Instead, `patches/patch-exiftool-stderr.mjs` runs on `postinstall` and removes two **documented** guard strings:

| Guard | Role |
| ----- | ---- |
| `READ_STDERR_GUARD` | After exit 0 on **read**, fail if stderr is non-empty |
| `WRITE_STDERR_GUARD` | After exit 0 on **write**, fail if stderr is non-empty |

See the script for exact literals and upstream context.

When upgrading `@uswriting/exiftool`, run `npm install` and confirm the script still finds both guards (or update the script for the new bundle).

## `@6over3/zeroperl-ts@1.0.10` — WASM load in module workers

`patches/patch-zeroperl-worker-fetch.mjs` changes the WASM loader so a custom `fetch` (from `@uswriting/exiftool` options) is honored even when `document` is missing (Web Workers).

| Snippet | Role |
| ----- | ---- |
| `if(Ee())a=await...` → `if(Ee()\|\|e)a=await...` (ESM) | Use fetch path when `options.fetch` is set |
| `if(pe())a=await...` → `if(pe()\|\|e)a=await...` (CJS) | Same for CJS bundle |

Workers still pass Vite’s WASM URL via `zeroperl.wasm?url` and `exiftoolParseOptions.fetch` in app code.

When upgrading `@6over3/zeroperl-ts`, re-run `npm install` and confirm the script still matches (or update literals).