Integrating Dialyzer into Existing Elixir Projects Smoothly

150
clicks
Integrating Dialyzer into Existing Elixir Projects Smoothly

Source: fly.io

Type: Post

This article focuses on the integration of Dialyzer, a static code analysis tool, into existing Elixir projects without causing team disruption. Dialyzer can be challenging to use, with issues often difficult to interpret, leading to mixed opinions among Elixir developers. Despite this, many find value in the tool’s ability to spot potential bugs early. The author presents a guide on how to start using Dialyzer by ignoring legacy errors while preventing new ones, making it possible to gradually clean up the codebase. Steps include adding Dialyzer via Dialyxir to a project, running it to identify errors, and creating an ignore file to bypass preexisting issues. The importance of integrating Dialyzer checks into CI pipelines is highlighted as a means to prevent the accumulation of new type errors and encourages fixing old ones gradually. The article also references resources for understanding and fixing Dialyzer errors, mentions language server tools for real-time type checking in IDEs, introduces the new incremental mode for Dialyzer released with OTP 26, and alludes to ongoing research on adding set-theoretic types to Elixir.

© HashMerge 2024