Function urlToRegex

packages/service-worker/config/src/generator.ts:175–184

(url: string, baseHref: string, literalQuestionMark?: boolean)

}

function urlToRegex(url: string, baseHref: string, literalQuestionMark?: boolean): string {
  if (!url.startsWith('/') && url.indexOf('://') === -1) {
    // Prefix relative URLs with `baseHref`.
    // Strip a leading `.` from a relative `baseHref` (e.g. `./foo/`), since it would result in an
    // incorrect regex (matching a literal `.`).
    url = joinUrls(baseHref.replace(/^\.(?=\/)/, ''), url);
  }

  return globToRegex(url, literalQuestionMark);
}

function joinUrls(a: string, b: string): string {
  if (a.endsWith('/') && b.startsWith('/')) {