Jenkins build fails with "Treating warnings as errors because of process.env.CI = true"
After updating the Jenkins, all builds started to fail with the following errors.
[ERROR] {some text}: {some text} is outdated. Please run next command `npm update`
[INFO] Treating warnings as errors because process.env.CI = true.
[INFO] Most CI servers set it automatically.
How can I fix this for all builds?
Solution
This is a result of this change:
It has introduced the standard CI env var that is always set to true in order to allow pipelines and tools to know they're executing in a continuous integration context.
This has emerged as a best practice used by most other popular CI solutions, and a number of tools look for this variable in order to make CI-appropriate optimizations.
You can set CI env variable to false through Manage Jenkins > Configure System > Global properties section.
Add a new env variable CI with the value false.
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