fix(syncing-server-js): creating directory for revision dumps

packages/syncing-server/src/Infra/FS/FSItemBackupService.ts

@@ -3,6 +3,7 @@ import { promises } from 'fs'
 import * as uuid from 'uuid'
 import { inject, injectable } from 'inversify'
 import { Logger } from 'winston'
+import { dirname } from 'path'
 
 import TYPES from '../../Bootstrap/Types'
 import { Item } from '../../Domain/Item/Item'
@@ -31,6 +32,8 @@ export class FSItemBackupService implements ItemBackupServiceInterface {
 
     this.logger.debug(`Dumping item ${item.uuid} to ${path}`)
 
+    await promises.mkdir(dirname(path), { recursive: true })
+
     await promises.writeFile(path, contents)
 
     return path