Function getCoAuthors

github-co-authors/github-co-authors.user.js:456–488

Get participants for the current PR and generate `Co-authored-by` messages for them.

()

/** Get participants for the current PR and generate `Co-authored-by` messages for them. */
async function getCoAuthors() {
    const [, owner, repo, _pull, id] = window.location.pathname.split('/')
    const pullNumber = parseInt(id || '', 10)

    const [prData, comments, reviewComments, reviews] = await Promise.all([
        fetchGitHubAPI(`/repos/${owner}/${repo}/pulls/${pullNumber}`),
        fetchGitHubAPI(`/repos/${owner}/${repo}/issues/${pullNumber}/comments`),
        fetchGitHubAPI(`/repos/${owner}/${repo}/pulls/${pullNumber}/comments`),
        fetchGitHubAPI(`/repos/${owner}/${repo}/pulls/${pullNumber}/reviews`)
    ])

    const participants = /** @type {Map<string, { name: string; email: string }>} */ (new Map())

    // Add commenters
    for (const { user } of [...comments, ...reviewComments, ...reviews]) {
        // Skip bot comments
        if (user.type === 'Bot') continue
        // Skip PR author
        if (user.login === prData.user.login) continue
        // Add commenters
        if (!participants.has(user.login)) {
            participants.set(user.login, {
                name: user.name || user.login,
                email: `${user.id}+${user.login}@users.noreply.github.com`
            })
        }
    }

    const lines = Array.from(participants.values()).map(
        (p) => `Co-authored-by: ${p.name} <${p.email}>`
    )
    return { message: lines.join('\n'), count: lines.length }
}

/**
 * Simple wrapper around `fetch()` for making GitHub API requests, e.g. `fetchGitHubAPI('/repos/withastro')`.