Use Immer 6 alpha (#396)

* Use fork of nanoid

* Remove nanoid

* Update to Immer 6 alpha

* Enable Immer 6's ES5 support

* Add TS 3.8 coverage

.travis.yml

@@ -2,6 +2,7 @@ language: node_js
 node_js: node
 env:
   - TYPESCRIPT_VERSION=rc
+  - TYPESCRIPT_VERSION=3.8
   - TYPESCRIPT_VERSION=3.7
   - TYPESCRIPT_VERSION=3.6
   - TYPESCRIPT_VERSION=3.5

package.json

@@ -57,8 +57,7 @@
     "src"
   ],
   "dependencies": {
-    "immer": "^4.0.1",
-    "nanoid": "^2.1.11",
+    "immer": "^6.0.0-alpha.4",
     "redux": "^4.0.0",
     "redux-thunk": "^2.3.0",
     "reselect": "^4.0.0"

src/createAsyncThunk.ts

@@ -1,12 +1,12 @@
 import { Dispatch, AnyAction } from 'redux'
-import nanoid from 'nanoid'
 import {
   createAction,
   PayloadAction,
   ActionCreatorWithPreparedPayload
 } from './createAction'
 import { ThunkDispatch } from 'redux-thunk'
 import { FallbackIfUnknown } from './tsHelpers'
+import { nanoid } from './nanoid'
 
 // @ts-ignore we need the import of these types due to a bundling issue.
 type _Keep = PayloadAction | ActionCreatorWithPreparedPayload<any, unknown>

src/index.ts

@@ -1,8 +1,15 @@
+import { enableES5 } from 'immer'
 export * from 'redux'
 export { default as createNextState, Draft } from 'immer'
 export { createSelector } from 'reselect'
 export { ThunkAction } from 'redux-thunk'
 
+// We deliberately enable Immer's ES5 support, on the grounds that
+// we assume RTK will be used with React Native and other Proxy-less
+// environments.  In addition, that's how Immer 4 behaved, and since
+// we want to ship this in an RTK minor, we should keep the same behavior.
+enableES5()
+
 export {
   // js
   configureStore,

src/nanoid.ts

@@ -0,0 +1,27 @@
+// Borrowed from https://github.com/ai/nanoid/tree/master/non-secure
+// This alphabet uses a-z A-Z 0-9 _- symbols.
+// Symbols are generated for smaller size.
+// -_zyxwvutsrqponmlkjihgfedcba9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA
+let url = '-_'
+// Loop from 36 to 0 (from z to a and 9 to 0 in Base36).
+let i = 36
+while (i--) {
+  // 36 is radix. Number.prototype.toString(36) returns number
+  // in Base36 representation. Base36 is like hex, but it uses 0–9 and a-z.
+  url += i.toString(36)
+}
+// Loop from 36 to 10 (from Z to A in Base36).
+i = 36
+while (i-- - 10) {
+  url += i.toString(36).toUpperCase()
+}
+
+export function nanoid(size = 21) {
+  let id = ''
+  // Compact alternative for `for (var i = 0; i < size; i++)`
+  while (size--) {
+    // `| 0` is compact and faster alternative for `Math.floor()`
+    id += url[(Math.random() * 64) | 0]
+  }
+  return id
+}