Created a first draft of this action. (#14)

Reviewed-on: #14
Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>
Co-committed-by: Philipp Horstenkamp <philipp@horstenkamp.de>

node_modules/undici/lib/global.js

@@ -0,0 +1,32 @@
+'use strict'
+
+// We include a version number for the Dispatcher API. In case of breaking changes,
+// this version number must be increased to avoid conflicts.
+const globalDispatcher = Symbol.for('undici.globalDispatcher.1')
+const { InvalidArgumentError } = require('./core/errors')
+const Agent = require('./agent')
+
+if (getGlobalDispatcher() === undefined) {
+  setGlobalDispatcher(new Agent())
+}
+
+function setGlobalDispatcher (agent) {
+  if (!agent || typeof agent.dispatch !== 'function') {
+    throw new InvalidArgumentError('Argument agent must implement Agent')
+  }
+  Object.defineProperty(globalThis, globalDispatcher, {
+    value: agent,
+    writable: true,
+    enumerable: false,
+    configurable: false
+  })
+}
+
+function getGlobalDispatcher () {
+  return globalThis[globalDispatcher]
+}
+
+module.exports = {
+  setGlobalDispatcher,
+  getGlobalDispatcher
+}