reviewers.js

const id = 'reviewers'

export default {
  id,
  meta: {
    description: 'enforce having reviewers',
    recommended: true
  },
  defaults: {},
  options: {},
  validate: (context, rule) => {
    const parsed = context.toJSON()
    // release commits generally won't have any reviewers
    if (parsed.release) {
      context.report({
        id,
        message: 'skipping reviewers for release commit',
        string: '',
        level: 'skip'
      })
      return
    }

    if (rule.options.expectsMissing) {
      return context.report({
        id,
        message: 'Commit must not have any reviewer.',
        string: null,
        line: 0,
        column: 0,
        level: parsed.reviewers.length ? 'fail' : 'pass'
      })
    }
    if (!Array.isArray(parsed.reviewers) || !parsed.reviewers.length) {
      // See nodejs/node#5aac4c42da104c30d8f701f1042d61c2f06b7e6c
      // for an example
      return context.report({
        id,
        message: 'Commit must have at least 1 reviewer.',
        string: null,
        line: 0,
        column: 0,
        level: 'fail'
      })
    }

    // TODO(evanlucas) verify that each reviewer is a collaborator
    // This will probably be easier to do once we move gitlint-parser-node
    // over to using an array of objects with parsed reviewers vs an array
    // of strings

    context.report({
      id,
      message: 'reviewers are valid',
      string: '',
      level: 'pass'
    })
  }
}