jest-environment-node: Add queueMicrotask (#9140)

* Add global.queueMicrotask Fix #9139 * jest-environment-node: Add queueMicrotask
jestjs · Nov 6, 2019 · 2f793b8 · 2f793b8
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -18,6 +18,7 @@
 - `[jest-diff]` Add `firstOrLastEmptyLineReplacement` option and export 3 `diffLines` functions ([#8955](https://github.com/facebook/jest/pull/8955))
 - `[jest-environment-jsdom]` Add `fakeTimersLolex` ([#8925](https://github.com/facebook/jest/pull/8925))
 - `[jest-environment-node]` Add `fakeTimersLolex` ([#8925](https://github.com/facebook/jest/pull/8925))
+- `[jest-environment-node]` Add `queueMicrotask` ([#9140](https://github.com/facebook/jest/pull/9140))
 - `[@jest/fake-timers]` Add Lolex as implementation of fake timers ([#8897](https://github.com/facebook/jest/pull/8897))
 - `[jest-get-type]` Add `BigInt` support. ([#8382](https://github.com/facebook/jest/pull/8382))
 - `[jest-matcher-utils]` Add `BigInt` support to `ensureNumbers` `ensureActualIsNumber`, `ensureExpectedIsNumber` ([#8382](https://github.com/facebook/jest/pull/8382))

diff --git a/packages/jest-environment-node/src/index.ts b/packages/jest-environment-node/src/index.ts
@@ -53,6 +53,10 @@ class NodeEnvironment implements JestEnvironment {
       global.TextEncoder = TextEncoder;
       global.TextDecoder = TextDecoder;
     }
+    // queueMicrotask is global in Node >= 11
+    if (typeof queueMicrotask !== 'undefined') {
+      global.queueMicrotask = queueMicrotask;
+    }
     installCommonGlobals(global, config.globals);
     this.moduleMocker = new ModuleMocker(global);