Document Expo SDK v39 behavior

Fixes ai#207
ctavan · Dec 1, 2020 · d859624 · d859624
1 parent a6f1f69
commit d859624
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diff --git a/README.md b/README.md
@@ -235,7 +235,8 @@ Use Nano ID 2 `npm i nanoid@^2.0.0` until Create React App 4.0 release.
 
 ### React Native
 
-React Native does not have built-in random generator.
+React Native does not have built-in random generator. The following polyfill works for plain React
+Native and Expo starting with v39.
 
 1. Check [`react-native-get-random-values`] docs and install it.
 2. Import it before Nano ID.
@@ -268,7 +269,7 @@ For Rollup you will need [`@rollup/plugin-replace`] to replace
 
 ### Expo
 
-If you use Expo in React Native, you need a different workaround.
+If you use Expo prior to v39 in React Native, you need a different workaround.
 
 1. Install [`expo-random`](https://www.npmjs.com/package/expo-random).
 2. Use `nanoid/async` instead of `nanoid`.

diff --git a/index.browser.js b/index.browser.js
@@ -14,7 +14,7 @@ if (process.env.NODE_ENV !== 'production') {
       'React Native does not have a built-in secure random generator. ' +
         'If you don’t need unpredictable IDs use `nanoid/non-secure`. ' +
         'For secure IDs, import `react-native-get-random-values` ' +
-        'before Nano ID. If you use Expo, install `expo-random` ' +
+        'before Nano ID. If you use Expo v38 or below, install `expo-random` ' +
         'and use `nanoid/async`.'
     )
   }

diff --git a/package.json b/package.json
@@ -187,7 +187,9 @@
       "Rollup",
       "transpile",
       "workaround",
-      "Deno"
+      "Deno",
+      "polyfill",
+      "v39"
     ]
   },
   "sharec": {