Added licence notice to many files, other minor type fixes

src/utils/classes.ts

@@ -1,4 +1,23 @@
-// import os from 'os'
+/* ----------------------------------------------------------------------------
+
+ Question Server
+ GitLab: <https://gitlab.com/MrFry/mrfrys-node-server>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+ ------------------------------------------------------------------------- */
+
 import { isMainThread, parentPort, workerData } from 'worker_threads'
 
 import logger from './logger'
@@ -13,7 +32,7 @@ import { editDb, Edits } from './actions'
 export interface WorkerResult {
   msg: string
   workerIndex: number
-  result: SearchResultQuestion[]
+  result?: SearchResultQuestion[]
 }
 
 interface DetailedMatch {
@@ -557,7 +576,7 @@ function doSearch(
 function setNoPossibleAnswersPenalties(
   possibleAnswers: QuestionData['possibleAnswers'],
   result: SearchResultQuestion[]
-): any {
+): SearchResultQuestion[] {
   if (!Array.isArray(possibleAnswers)) {
     return result
   }
@@ -605,9 +624,6 @@ interface WorkData {
 }
 
 if (!isMainThread) {
-  // os.setPriority(10)
-  // logger.Log(`Worker thread priority set to ${os.getPriority()}`)
-
   const {
     workerIndex,
     initData,