Fresh updater hangs at “Processing files… [0/12945]” during Fresh 1 → Fresh 2 migration and crashes WSL

[leongobbs]

Description

When I run the Fresh upgrade task (deno task upgrade) to migrate a project from Fresh 1 to Fresh 2, the updater gets stuck at the file-processing stage and never progresses. After it hangs, my WSL session becomes unresponsive / crashes, effectively breaking WSL until I restart it.

This seems to happen consistently on my machine.

Steps to reproduce

1. Open WSL and go to the Fresh project directory:

   cd ~/project

2. Run:

   deno task upgrade

Expected behavior

• The Fresh updater should continue past “Processing files…” and complete the migration (or fail with a clear error message).

Actual behavior

• Output stops here and never progresses:

  Callab@WIN-01S7BST8S4R:~/project$ deno task upgrade
  Task upgrade deno upgrade && deno run -A -r jsr:@fresh/update .
  Current Deno version: v2.6.10
  Looking up stable version
  
  Local deno version 2.6.10 is the most recent release
  
   🍋 Fresh Updater
  
  Note: Breaking changes may require additional manual updates.
  
  🚀 Starting Fresh 1 to Fresh 2 migration...
  📝 Updating configuration files...
  ✅ Configuration updated successfully
  🔍 Scanning for source files...
  📁 Found 3845 files to process
  🔄 Processing files...
  [00:00] [--------------------------------------------------] [0/12945 files]
  

• After this, WSL freezes/crashes.

Environment

• OS: Windows + WSL (please fill exact versions)

  • Windows version: (e.g. Windows 11 23H2 / build …)
  • WSL version: (output of wsl --version)
  • Distro: (Ubuntu 22.04/24.04/etc.)

• Deno: v2.6.10

• Fresh updater: deno run -A -r jsr:@fresh/update .

• Project size: “Found 3845 files”, attempts to process 12945 files

Additional info

• The progress stays at 0/12945 and doesn’t move even after waiting.
• No error is printed before WSL becomes unstable.