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Dev.to
7/7/2026
The original title is 10 words: "Two Subtle Bugs: BFS Path Comparison and Async/Await Promise Confusion"

The original title is 10 words: "Two Subtle Bugs: BFS Path Comparison and Async/Await Promise Confusion"

Original: 2 Bugs That Made Me Question My Life Choices (And What They Actually Were)

Short summary

Developer shares two debugging war stories: a BFS pathfinding bug where path comparison happened before removing duplicates, and a marketplace upload bug caused by awaiting the wrong promise. Both are cautionary tales about subtle logic errors that consumed hours.

  • •BFS pathfinding sent ants down longer routes because path comparison happened before duplicate edge removal
  • •Marketplace image upload appeared successful but field was empty—caused by awaiting wrong promise variable
  • •Both bugs highlight the importance of careful variable tracking and promise handling in async code

Generated with AI, which can make mistakes.

#certification-education
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