Function filterRelevantIssues

packages/ci/src/lib/issues.ts:27–67

({
  currReport,
  prevReport,
  reportsDiff,
  changedFiles,
}: {
  currReport: Report;
  prevReport: Report;
  reportsDiff: ReportsDiff;
  changedFiles: ChangedFiles;
})

type IssueCompareFn = (a: SourceFileIssue, b: SourceFileIssue) => number;

export function filterRelevantIssues({
  currReport,
  prevReport,
  reportsDiff,
  changedFiles,
}: {
  currReport: Report;
  prevReport: Report;
  reportsDiff: ReportsDiff;
  changedFiles: ChangedFiles;
}): SourceFileIssue[] {
  const auditsWithPlugin = [
    ...reportsDiff.audits.changed,
    ...reportsDiff.audits.added,
  ]
    .map((auditLink): [PluginMeta, AuditReport] | undefined => {
      const plugin = currReport.plugins.find(
        ({ slug }) => slug === auditLink.plugin.slug,
      );
      const audit = plugin?.audits.find(({ slug }) => slug === auditLink.slug);
      return plugin && audit && [plugin, audit];
    })
    .filter((ctx): ctx is [PluginMeta, AuditReport] => ctx != null);

  const issues = auditsWithPlugin.flatMap(([plugin, audit]) =>
    getAuditIssues(audit, plugin),
  );
  const prevIssues = prevReport.plugins.flatMap(plugin =>
    plugin.audits.flatMap(audit => getAuditIssues(audit, plugin)),
  );

  return issues
    .filter(
      issue =>
        isFileChanged(changedFiles, issue.source.file) &&
        !prevIssues.some(prevIssue =>
          issuesMatch(prevIssue, issue, changedFiles),
        ),
    )
    .sort(createIssuesSortCompareFn(currReport));
}

function getAuditIssues(
  audit: AuditReport,