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/fileapi/progressevent.js

@@ -0,0 +1,78 @@
+'use strict'
+
+const { webidl } = require('../fetch/webidl')
+
+const kState = Symbol('ProgressEvent state')
+
+/**
+ * @see https://xhr.spec.whatwg.org/#progressevent
+ */
+class ProgressEvent extends Event {
+  constructor (type, eventInitDict = {}) {
+    type = webidl.converters.DOMString(type)
+    eventInitDict = webidl.converters.ProgressEventInit(eventInitDict ?? {})
+
+    super(type, eventInitDict)
+
+    this[kState] = {
+      lengthComputable: eventInitDict.lengthComputable,
+      loaded: eventInitDict.loaded,
+      total: eventInitDict.total
+    }
+  }
+
+  get lengthComputable () {
+    webidl.brandCheck(this, ProgressEvent)
+
+    return this[kState].lengthComputable
+  }
+
+  get loaded () {
+    webidl.brandCheck(this, ProgressEvent)
+
+    return this[kState].loaded
+  }
+
+  get total () {
+    webidl.brandCheck(this, ProgressEvent)
+
+    return this[kState].total
+  }
+}
+
+webidl.converters.ProgressEventInit = webidl.dictionaryConverter([
+  {
+    key: 'lengthComputable',
+    converter: webidl.converters.boolean,
+    defaultValue: false
+  },
+  {
+    key: 'loaded',
+    converter: webidl.converters['unsigned long long'],
+    defaultValue: 0
+  },
+  {
+    key: 'total',
+    converter: webidl.converters['unsigned long long'],
+    defaultValue: 0
+  },
+  {
+    key: 'bubbles',
+    converter: webidl.converters.boolean,
+    defaultValue: false
+  },
+  {
+    key: 'cancelable',
+    converter: webidl.converters.boolean,
+    defaultValue: false
+  },
+  {
+    key: 'composed',
+    converter: webidl.converters.boolean,
+    defaultValue: false
+  }
+])
+
+module.exports = {
+  ProgressEvent
+}