tauri.ts errors when using typescript strict null checks

[Worble]

Describe the bug

Attempting to compile typescript after enabling strict null checks fails.

To Reproduce

Steps to reproduce the behavior:

• Set strictNullChecks compiler option to true in tsconfig.json
• Attempt to use any module from @tauri-apps/api
• The following error should appear on compilation:

  ERROR in node_modules/@tauri-apps/api/tauri.ts:30:54
  TS2345: Argument of type 'number | undefined' is not assignable to parameter of type 'number'.
    Type 'undefined' is not assignable to type 'number'.
      28 |   const length = new Int8Array(1)
      29 |   window.crypto.getRandomValues(length)
    > 30 |   const array = new Uint8Array(Math.max(16, Math.abs(length[0])))
         |                                                      ^^^^^^^^^
      31 |   window.crypto.getRandomValues(array)
      32 |   return array.join('')
      33 | }
  

Expected behavior

The application should compile without errors.

Platform and Versions (required):

Operating System - Arch Linux, version Rolling Release X64

Node.js environment
  Node.js - 16.9.1
  @tauri-apps/cli - 1.0.0-beta.10
  @tauri-apps/api - 1.0.0-beta.8

Global packages
  npm - 7.23.0
  yarn - Not installed

Rust environment
  rustc - 1.55.0
  cargo - 1.55.0

App directory structure
/src-tauri
/src
/node_modules
/.git
/dist

App
  tauri.rs - 1.0.0-beta.8
  build-type - bundle
  CSP - default-src blob: data: filesystem: ws: wss: http: https: tauri: 'unsafe-eval' 'unsafe-inline' 'self' img-src: 'self'
  distDir - ../dist
  devPath - http://localhost:8080
  framework - React
  bundler - Webpack

[amrbashir]

closing in favor of #2598