1 files changed, 103 insertions, 0 deletions
diff --git a/packages/idb-bridge/src/util/FakeDomEvent.ts b/packages/idb-bridge/src/util/FakeDomEvent.ts
new file mode 100644
index 000000000..b3ff298ec
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+++ b/packages/idb-bridge/src/util/FakeDomEvent.ts
@@ -0,0 +1,103 @@
+/*
+ Copyright 2017 Jeremy Scheff
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ or implied. See the License for the specific language governing
+ permissions and limitations under the License.
+*/
+
+import FakeEventTarget from "./FakeEventTarget.js";
+import { Event, EventTarget } from "../idbtypes.js";
+
+/** @public */
+export type EventType =
+  | "abort"
+  | "blocked"
+  | "complete"
+  | "error"
+  | "success"
+  | "upgradeneeded"
+  | "versionchange";
+
+export class FakeDomEvent implements Event {
+  public eventPath: FakeEventTarget[] = [];
+  public type: EventType;
+
+  public readonly NONE = 0;
+  public readonly CAPTURING_PHASE = 1;
+  public readonly AT_TARGET = 2;
+  public readonly BUBBLING_PHASE = 3;
+
+  // Flags
+  public propagationStopped = false;
+  public immediatePropagationStopped = false;
+  public canceled = false;
+  public initialized = true;
+  public dispatched = false;
+
+  public target: FakeEventTarget | null = null;
+  public currentTarget: FakeEventTarget | null = null;
+
+  public eventPhase: 0 | 1 | 2 | 3 = 0;
+
+  public defaultPrevented = false;
+
+  public isTrusted = false;
+  public timeStamp = Date.now();
+
+  public bubbles: boolean;
+  public cancelable: boolean;
+
+  constructor(
+    type: EventType,
+    eventInitDict: { bubbles?: boolean; cancelable?: boolean } = {},
+  ) {
+    this.type = type;
+
+    this.bubbles =
+      eventInitDict.bubbles !== undefined ? eventInitDict.bubbles : false;
+    this.cancelable =
+      eventInitDict.cancelable !== undefined ? eventInitDict.cancelable : false;
+  }
+  cancelBubble: boolean = false;
+  composed: boolean = false;
+  returnValue: boolean = false;
+  get srcElement(): EventTarget | null {
+    return this.target;
+  }
+  composedPath(): EventTarget[] {
+    throw new Error("Method not implemented.");
+  }
+  initEvent(
+    type: string,
+    bubbles?: boolean | undefined,
+    cancelable?: boolean | undefined,
+  ): void {
+    throw new Error("Method not implemented.");
+  }
+
+  public preventDefault() {
+    if (this.cancelable) {
+      this.canceled = true;
+    }
+  }
+
+  public stopPropagation() {
+    this.propagationStopped = true;
+  }
+
+  public stopImmediatePropagation() {
+    this.propagationStopped = true;
+    this.immediatePropagationStopped = true;
+  }
+}
+
+export default FakeDomEvent;