Switch completely to TypeScript, updated userColors

src/utils/exportUtils/exportUtils.ts

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+import { MatrixClientPeg } from "../../MatrixClientPeg";
+import { arrayFastClone } from "../arrays";
+import { TimelineWindow } from "matrix-js-sdk/src/timeline-window";
+import Room from 'matrix-js-sdk/src/models/room';
+import exportAsHTML from "./HtmlExport";
+
+export enum exportFormats {
+    HTML = "HTML",
+    JSON = "JSON",
+    LOGS = "LOGS",
+}
+
+export enum exportOptions {
+    TIMELINE = "TIMELINE",
+}
+
+const getTimelineConversation = (room: Room) => {
+    if (!room) return;
+
+    const cli = MatrixClientPeg.get();
+
+    const timelineSet = room.getUnfilteredTimelineSet();
+
+    const timelineWindow = new TimelineWindow(
+        cli, timelineSet,
+        {windowLimit: Number.MAX_VALUE});
+
+    timelineWindow.load(null, 30);
+
+    const events = timelineWindow.getEvents();
+
+    // Clone and reverse the events so that we preserve the order
+    arrayFastClone(events)
+        .reverse()
+        .forEach(event => {
+            cli.decryptEventIfNeeded(event);
+        });
+
+    return events;
+};
+
+
+const exportConversationalHistory = async (room: Room, format: string, options) => {
+    const res = getTimelineConversation(room);
+    switch (format) {
+        case exportFormats.HTML:
+            await exportAsHTML(res, room);
+            break;
+        case exportFormats.JSON:
+            break;
+        case exportFormats.LOGS:
+            break;
+    }
+};
+
+export default exportConversationalHistory;