fix all type errors

lib/store.ts

@@ -2,6 +2,7 @@ const storeDir = process.env.JSON_STORE || '/tmp/pdfer-store/'
 
 import { promisify } from 'util'
 
+// @ts-ignore
 import JsonStore from 'json-fs-store'
 
 const store = JsonStore(storeDir)

lib/templates.ts

@@ -1,8 +1,10 @@
+import { IDocProps } from '../interfaces/IDocProps'
+
 function convertLineBreaks(lines: string) {
   return lines.replace(/\n/g, '\\\\')
 }
 
-export function brief(options: Record<string, string>) {
+export function brief(options: IDocProps) {
   const {
     template = 'brief-fam',
     subject = '',
@@ -21,7 +23,7 @@ export function brief(options: Record<string, string>) {
     closing = 'Mit freundlichen Grüßen',
     ps = '',
     enclosing = '',
-  } = options
+  } = { ...options }
 
   return `% brief document
 \\documentclass{scrlttr2}