fix(expo-app): patch hoisted deps and add libsodium-wrappers ESM shim#467
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leeroybrun merged 1 commit intoslopus:mainfrom Jan 24, 2026
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Expo web builds can fail at runtime with:
"Unable to resolve module ./libsodium.mjs from .../libsodium-wrappers.mjs"
Root cause:
- In Yarn workspace installs, libsodium-wrappers is typically hoisted to the repo root.
- Upstream postinstall runs `patch-package` from `expo-app/`, so patches cannot apply to hoisted deps.
- libsodium-wrappers@0.7.16's ESM wrapper imports `./libsodium.mjs`, but that file is not shipped.
Fix:
- Add `expo-app/patches/libsodium-wrappers+0.7.16.patch` to provide the missing ESM shim:
`dist/modules-esm/libsodium.mjs` -> `export { default } from "libsodium";`
- Replace the naive postinstall with `expo-app/tools/postinstall.mjs` that:
- resolves real paths (works when executed via symlinked workspace paths)
- runs patch-package from the repo root with `--patch-dir expo-app/patches` so hoisted deps are patched
- keeps the existing `setup-skia-web public` step
This makes the Expo web UI load reliably in clean environments (including Linux VMs).
JoeLuker
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Feb 1, 2026
…-wrappers-web fix(expo-app): patch hoisted deps and add libsodium-wrappers ESM shim
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Expo web builds can fail at runtime with:
"Unable to resolve module ./libsodium.mjs from .../libsodium-wrappers.mjs"
Root cause:
patch-packagefromexpo-app/, so patches cannot apply to hoisted deps../libsodium.mjs, but that file is not shipped.Fix:
expo-app/patches/libsodium-wrappers+0.7.16.patchto provide the missing ESM shim:dist/modules-esm/libsodium.mjs->export { default } from "libsodium";expo-app/tools/postinstall.mjsthat:--patch-dir expo-app/patchesso hoisted deps are patchedsetup-skia-web publicstepThis makes the Expo web UI build and load again with the monorepo