server-ts: Fix build errors

src/services/import/markdown.ts

@@ -7,7 +7,7 @@ import importUtils = require('./utils');
 function renderToHtml(content: string, title: string) {
     const html = marked.parse(content, {
         async: false
-    });  // FIXME: mangle and headerIds does not seem to exist in marked
+    }) as string;  // FIXME: mangle and headerIds does not seem to exist in marked
     const h1Handled = importUtils.handleH1(html, title); // h1 handling needs to come before sanitization
     return htmlSanitizer.sanitize(h1Handled);
 }

src/services/task_context.ts

@@ -1,18 +1,11 @@
 "use strict";
 
+import { TaskData } from './task_context_interface';
 import ws = require('./ws');
 
 // taskId => TaskContext
 const taskContexts: Record<string, TaskContext> = {};
 
-interface TaskData {
-    safeImport?: boolean;
-    textImportedAsText?: boolean;
-    codeImportedAsCode?: boolean;
-    shrinkImages?: boolean;
-    replaceUnderscoresWithSpaces?: boolean;
-}
-
 class TaskContext {
 
     private taskId: string;

src/services/task_context_interface.ts

@@ -0,0 +1,7 @@
+export interface TaskData {
+    safeImport?: boolean;
+    textImportedAsText?: boolean;
+    codeImportedAsCode?: boolean;
+    shrinkImages?: boolean;
+    replaceUnderscoresWithSpaces?: boolean;
+}

src/services/ws.ts

@@ -12,6 +12,8 @@ import AbstractBeccaEntity = require('../becca/entities/abstract_becca_entity');
 import env = require('./env');
 import { IncomingMessage, Server } from 'http';
 import { EntityChange } from './entity_changes_interface';
+import { TaskData } from './task_context_interface';
+
 if (env.isDev()) {
     const chokidar = require('chokidar');
     const debounce = require('debounce');
@@ -28,10 +30,9 @@ let lastSyncedPush: number | null = null;
 
 interface Message {
     type: string;
-    data?: {
+    data?: TaskData | null | {
         lastSyncedPush?: number | null,
         entityChanges?: any[],
-        safeImport?: boolean
     },
     lastSyncedPush?: number | null,