grammarly · Igorbek · Oct 23, 2023 · Oct 23, 2023 · Oct 23, 2023 · Oct 23, 2023
diff --git a/.changeset/popular-chefs-laugh.md b/.changeset/popular-chefs-laugh.md
@@ -0,0 +1,6 @@
+---
+"@grammarly/focal-atom": minor
+"@grammarly/focal": minor
+---
+
+Update peer dependency to include rxjs versions up to 7.x
diff --git a/packages/examples/all/package.json b/packages/examples/all/package.json
@@ -33,7 +33,7 @@
     "react-transform-catch-errors": "^1.0.2",
     "react-transform-hmr": "^1.0.4",
     "redbox-react": "^1.3.0",
-    "rxjs": "6.3.3",
+    "rxjs": "^7.8.1",
     "style-loader": "^1.0.0",
     "todomvc-app-css": "^2.0.6",
     "ts-loader": "8.2.0",

diff --git a/packages/examples/todomvc/package.json b/packages/examples/todomvc/package.json
@@ -32,7 +32,7 @@
     "react-transform-catch-errors": "^1.0.2",
     "react-transform-hmr": "^1.0.4",
     "redbox-react": "^1.3.0",
-    "rxjs": "6.3.3",
+    "rxjs": "^7.8.1",
     "todomvc-app-css": "^2.0.6",
     "ts-loader": "8.2.0",
     "typescript": "^4.7.4",

diff --git a/packages/focal-atom/package.json b/packages/focal-atom/package.json
@@ -89,11 +89,11 @@
     "@types/jest": "^24.0.20",
     "@types/node": "^18.0.0",
     "jest": "^28.1.1",
-    "rxjs": "6.3.3",
+    "rxjs": "^7.8.1",
     "ts-jest": "^28.0.5",
     "typescript": "^4.7.4"
   },
   "peerDependencies": {
-    "rxjs": ">= 6.3.3 < 7.0.0-0"
+    "rxjs": ">= 6.3.3 < 8.0.0-0"
   }
 }
diff --git a/packages/focal-atom/src/atom/base.ts b/packages/focal-atom/src/atom/base.ts
@@ -2,7 +2,16 @@ import { Lens, Prism, PropExpr } from './../lens'
 import { Option } from './../utils'
 import { structEq } from './../equals'
 
-import { Observable, Subscriber, Subscription, BehaviorSubject, combineLatest } from 'rxjs'
+import { Observable, Subscription, BehaviorSubject, combineLatest, Observer } from 'rxjs'
+
+/** Parameters of the implementation of the overloaded `Subscribable.subscribe` method. */
+type SubscribeParameters<T> = readonly [
+  observerOrNext?: Partial<Observer<T>> | ((value: T) => void),
+] | readonly [
+  next?: ((value: T) => void) | null,
+  error?: ((error: any) => void) | null,
+  complete?: (() => void) | null
+]
 
 /**
  * Read-only atom.
@@ -371,7 +380,13 @@ class LensedAtom<TSource, TDest> extends AbstractAtom<TDest> {
   private _refCount = 0
 
   // Rx method overrides
-  _subscribe(subscriber: Subscriber<TDest>) {
+  subscribe(observerOrNext?: Partial<Observer<TDest>> | ((value: TDest) => void)): Subscription
+  subscribe(
+    next?: ((value: TDest) => void) | null,
+    error?: ((error: any) => void) | null,
+    complete?: (() => void) | null
+  ): Subscription
+  subscribe(...args: SubscribeParameters<TDest>) {
     if (!this._subscription) {
       this._subscription = this._source.subscribe(x => this._onSourceValue(x))
     }
@@ -383,7 +398,7 @@ class LensedAtom<TSource, TDest> extends AbstractAtom<TDest> {
         this._subscription = null
       }
     })
-    sub.add(super._subscribe(subscriber))
+    sub.add(super.subscribe(...(args as [Observer<TDest>])))
 
     return sub
   }
@@ -440,7 +455,13 @@ class AtomViewImpl<TSource, TDest> extends AbstractReadOnlyAtom<TDest> {
   private _refCount = 0
 
   // Rx method overrides
-  _subscribe(subscriber: Subscriber<TDest>) {
+  subscribe(observerOrNext?: Partial<Observer<TDest>> | ((value: TDest) => void)): Subscription
+  subscribe(
+    next?: ((value: TDest) => void) | null,
+    error?: ((error: any) => void) | null,
+    complete?: (() => void) | null
+  ): Subscription
+  subscribe(...args: SubscribeParameters<TDest>) {
     if (!this._subscription) {
       this._subscription = this._source.subscribe(x => this._onSourceValue(x))
     }
@@ -452,7 +473,7 @@ class AtomViewImpl<TSource, TDest> extends AbstractReadOnlyAtom<TDest> {
         this._subscription = null
       }
     })
-    sub.add(super._subscribe(subscriber))
+    sub.add(super.subscribe(...(args as [Observer<TDest>])))
 
     return sub
   }
@@ -510,7 +531,13 @@ export class CombinedAtomViewImpl<TResult> extends AbstractReadOnlyAtom<TResult>
   private _refCount = 0
 
   // Rx method overrides
-  _subscribe(subscriber: Subscriber<TResult>) {
+  subscribe(observerOrNext?: Partial<Observer<TResult>> | ((value: TResult) => void)): Subscription
+  subscribe(
+    next?: ((value: TResult) => void) | null,
+    error?: ((error: any) => void) | null,
+    complete?: (() => void) | null
+  ): Subscription
+  subscribe(...args: SubscribeParameters<TResult>) {
     if (!this._subscription) {
       this._subscription = combineLatest(this._sources)
         .subscribe(xs => this._onSourceValues(xs))
@@ -523,7 +550,7 @@ export class CombinedAtomViewImpl<TResult> extends AbstractReadOnlyAtom<TResult>
         this._subscription = null
       }
     })
-    sub.add(super._subscribe(subscriber))
+    sub.add(super.subscribe(...(args as [Observer<TResult>])))
 
     return sub
   }

diff --git a/packages/focal-atom/test/atom.test.ts b/packages/focal-atom/test/atom.test.ts
@@ -744,7 +744,7 @@ describe('atom', () => {
   describe('fromObservable', () => {
     test('emits atom', async () => {
       const a = await Atom.fromObservable(from([1])).pipe(take(1)).toPromise()
-      expect(a.get()).toEqual(1)
+      expect(a?.get()).toEqual(1)
     })
 
     test('emits atom once', async () => {
@@ -755,7 +755,7 @@ describe('atom', () => {
         from(['hello'])
       ).pipe(take(2), toArray()).toPromise()
 
-      expect(a[1]).toEqual('hello')
+      expect(a?.[1]).toEqual('hello')
     })
 
     test('does not subscribe to source immediately', () => {

diff --git a/packages/focal/package.json b/packages/focal/package.json
@@ -93,7 +93,7 @@
     "jest-environment-jsdom": "^28.1.1",
     "react": "^18.0.0",
     "react-dom": "^18.0.0",
-    "rxjs": "6.3.3",
+    "rxjs": "^7.8.1",
     "ts-jest": "^28.0.5",
     "typescript": "^4.7.4"
   },
@@ -105,6 +105,6 @@
     "@types/react-dom": ">= 18.0.0 < 19.0.0-0",
     "react": ">= 18.0.0 < 19.0.0-0",
     "react-dom": ">= 18.0.0 < 19.0.0-0",
-    "rxjs": ">= 6.3.3 < 7.0.0-0"
+    "rxjs": ">= 6.3.3 < 8.0.0-0"
   }
 }
diff --git a/packages/focal/src/react/react.ts b/packages/focal/src/react/react.ts
@@ -606,9 +606,12 @@ export function classes(
         filterClassNames(cs || []).map(x =>
           // @TODO optimize: unnecessary Observable.of
           // can we actually already just remove this?
-          !(x instanceof Observable) ? of(x) : x
+
+          // we check if x is a string because after `filterClassNames`
+          // it can be only a string as non-observable value; otherwise it is an `ObservableInput`
+          typeof x === 'string' ? of(x) : x
         ),
-        (...cs: ClassNameLike[]) => {
+        (...cs) => {
           const filtered = filterClassNames(cs || [])
 
           return filtered.length > 0

diff --git a/packages/test/package.json b/packages/test/package.json
@@ -28,7 +28,7 @@
     "react-transform-catch-errors": "^1.0.2",
     "react-transform-hmr": "^1.0.4",
     "redbox-react": "^1.3.0",
-    "rxjs": "6.3.3",
+    "rxjs": "^7.8.1",
     "todomvc-app-css": "^2.0.6",
     "ts-loader": "8.2.0",
     "typescript": "^4.7.4",

diff --git a/yarn.lock b/yarn.lock
@@ -5115,12 +5115,12 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
-rxjs@6.3.3:
-  version "6.3.3"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.3.3.tgz#3c6a7fa420e844a81390fb1158a9ec614f4bad55"
-  integrity sha512-JTWmoY9tWCs7zvIk/CvRjhjGaOd+OVBM987mxFo+OW66cGpdKjZcpmc74ES1sB//7Kl/PAe8+wEakuhG4pcgOw==
+rxjs@^7.8.1:
+  version "7.8.1"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.8.1.tgz#6f6f3d99ea8044291efd92e7c7fcf562c4057543"
+  integrity sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==
   dependencies:
-    tslib "^1.9.0"
+    tslib "^2.1.0"
 
 safe-array-concat@^1.0.1:
   version "1.0.1"
@@ -5779,11 +5779,16 @@ ts-loader@8.2.0:
     micromatch "^4.0.0"
     semver "^7.3.4"
 
-tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
+tslib@^1.8.0, tslib@^1.8.1:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
+tslib@^2.1.0:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.6.2.tgz#703ac29425e7b37cd6fd456e92404d46d1f3e4ae"
+  integrity sha512-AEYxH93jGFPn/a2iVAwW87VuUIkR1FVUKB77NwMF7nBTDkDrrT/Hpt/IrCJ0QXhW27jTBDcf5ZY7w6RiqTMw2Q==
+
 tslint@5.20.0:
   version "5.20.0"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.20.0.tgz#fac93bfa79568a5a24e7be9cdde5e02b02d00ec1"