chore: migrate code to ESM (#73)

node_modules/undici/lib/global.js

@@ -1,32 +0,0 @@
-'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
-}