improvements

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 6.0.7
+
+* [Fix now() sharing global state between tests #316](/~https://github.com/mobxjs/mobx-utils/pull/316), fixes [#306](/~https://github.com/mobxjs/mobx-utils/issues/306). 
+
 # 6.0.6
 
 * [fromPromise carries forward old value from pending observable](/~https://github.com/mobxjs/mobx-utils/pull/311)

src/now.ts

@@ -5,12 +5,21 @@ const tickers: {
     [interval: string]: IResource<number>
 } = {}
 
-export function clearTimers() {
-    for (const key in tickers) {
-        if (tickers.hasOwnProperty(key)) {
-            tickers[key].dispose()
-            delete tickers[key]
-        }
+/**
+ * Disposes of all the internal Observables created by invocations of `now()`.
+ *
+ * The use case for this is to ensure that unit tests can run independent of each other.
+ * You should not call this in regular application code.
+ *
+ * @example
+ * afterEach(() => {
+ *     utils.resetNowInternalState()
+ * })
+ */
+export function resetNowInternalState() {
+    for (const key of Object.getOwnPropertyNames(tickers)) {
+        tickers[key].dispose()
+        delete tickers[key]
     }
 }
 

test/now.js

@@ -78,7 +78,7 @@ describe("given desynchronization is enabled", () => {
     })
 
     afterEach(() => {
-        utils.clearTimers()
+        utils.resetNowInternalState()
     })
 
     it("given time passes, works", () => {