Added missing TextEncoder and TextDecoder to jest-envirotment-node (#8022)

Author: chyzwar

CHANGELOG.md

@@ -14,6 +14,7 @@
 
 ### Fixes
 
+- `[jest-environment-node]` Add mising globals: TextEncoder and TextDecoder ([#8022](https://github.com/facebook/jest/pull/8022))
 - `[jest-cli]` Fix prototype pollution vulnerability in dependency ([#7904](https://github.com/facebook/jest/pull/7904))
 - `[jest-cli]` Refactor `-o` and `--coverage` combined ([#7611](https://github.com/facebook/jest/pull/7611))
 - `[expect]` Fix custom async matcher stack trace ([#7652](https://github.com/facebook/jest/pull/7652))

packages/jest-environment-node/src/index.ts

@@ -42,6 +42,15 @@ class NodeEnvironment implements JestEnvironment {
       global.URL = URL;
       global.URLSearchParams = URLSearchParams;
     }
+    // TextDecoder and TextDecoder are global in Node >= 11
+    if (
+      typeof TextEncoder !== 'undefined' &&
+      typeof TextDecoder !== 'undefined'
+    ) {
+      /* global TextEncoder, TextDecoder */
+      global.TextEncoder = TextEncoder;
+      global.TextDecoder = TextDecoder;
+    }
     installCommonGlobals(global, config.globals);
     this.moduleMocker = new ModuleMocker(global);