disable package exports

babel.config.js

@@ -37,10 +37,6 @@ module.exports = function (api) {
           alias: {
             // This needs to be mirrored in tsconfig.json
             '#': './src',
-            lib: './src/lib',
-            platform: './src/platform',
-            state: './src/state',
-            view: './src/view',
             crypto: './src/platform/crypto.ts',
           },
         },

metro.config.js

@@ -16,7 +16,25 @@ if (process.env.BSKY_PROFILE) {
 
 cfg.resolver.assetExts = [...cfg.resolver.assetExts, 'woff2']
 
+// Enabled by default in RN 0.79+, but this breaks Lingui + others
+cfg.resolver.unstable_enablePackageExports = false
+
 cfg.resolver.resolveRequest = (context, moduleName, platform) => {
+  // HACK: manually resolve a few packages that use `exports` in `package.json`.
+  // A proper solution is to enable `unstable_enablePackageExports` but this needs careful testing.
+  if (moduleName.startsWith('multiformats/hashes/hasher')) {
+    return context.resolveRequest(
+      context,
+      'multiformats/cjs/src/hashes/hasher',
+      platform,
+    )
+  }
+  if (moduleName.startsWith('multiformats/cid')) {
+    return context.resolveRequest(context, 'multiformats/cjs/src/cid', platform)
+  }
+  if (moduleName === '@ipld/dag-cbor') {
+    return context.resolveRequest(context, '@ipld/dag-cbor/src', platform)
+  }
   if (process.env.BSKY_PROFILE) {
     if (moduleName.endsWith('ReactNativeRenderer-prod')) {
       return context.resolveRequest(

src/lib/api/index.ts

@@ -19,7 +19,8 @@ import * as dcbor from '@ipld/dag-cbor'
 import {t} from '@lingui/macro'
 import {type QueryClient} from '@tanstack/react-query'
 import {sha256} from 'js-sha256'
-import {CID, hasher} from 'multiformats'
+import {CID} from 'multiformats/cid'
+import * as Hasher from 'multiformats/hashes/hasher'
 
 import {isNetworkError} from '#/lib/strings/errors'
 import {shortenLinks, stripInvalidMentions} from '#/lib/strings/rich-text-manip'
@@ -409,7 +410,7 @@ async function resolveRecord(
 
 // The built-in hashing functions from multiformats (`multiformats/hashes/sha2`)
 // are meant for Node.js, this is the cross-platform equivalent.
-const mf_sha256 = hasher.from({
+const mf_sha256 = Hasher.from({
   name: 'sha2-256',
   code: 0x12,
   encode: input => {

tsconfig.json

@@ -7,12 +7,9 @@
     "baseUrl": ".",
     "paths": {
       "#/*": ["./src/*"],
-      "lib/*": ["./src/lib/*"],
-      "platform/*": ["./src/platform/*"],
-      "state/*": ["./src/state/*"],
-      "view/*": ["./src/view/*"],
       "crypto": ["./src/platform/crypto.ts"],
-      "multiformats": ["node_modules/multiformats/types/src/index.d.ts"]
+      "multiformats/cid": ["node_modules/multiformats/types/src/cid.d.ts"],
+      "multiformats/hashes/hasher": ["node_modules/multiformats/types/src/hashes/hasher.d.ts"]
     }
   },
   "exclude": ["bskyweb", "bskyembed", "web-build"]