Gitlab CI how to ignore directory using rules syntax?

Question

I was able to ignore directory, file changes using the following syntax.

build:
  script: npm run build
  except:
    changes:
      - "*.md"
      - "src/**/*.ts"

With this configuration build job is going to run except git changes include only *.md extension file or *.ts files in src directory. They're ignored.

But then they deprecated this only:changes, except:changes syntax and warned to use rules syntax instead. Unfortunately, I cannot seem to find how to ignore directory, file changes using this new syntax.

Answer 1

Based on documents of rules: changes, it seems when: never must be used with rules: changes syntax. Like the following:

build:
  script: npm run build
  rules:
    - changes:
      - "*.md"
      - "src/**/*.ts"
      when: never

    - when: always

If changed paths in the repository match above regular expressions then the job will not be added to any pipeline. In other cases the job always will be run by pipelines.