Function pathToSpec

packages/fresh/src/utils.ts:247–277

(outDir: string, spec: string)

const PATH_TO_SPEC = /[\\/]+/g;
export function pathToSpec(outDir: string, spec: string): string {
  const outDirUrl = pathToFileUrl(outDir);

  if (
    spec.startsWith("http:") || spec.startsWith("https:") ||
    spec.startsWith("jsr:")
  ) {
    return spec;
  } else if (spec.startsWith("file://")) {
    const fileUrl = pathToFileUrl(spec);
    spec = relativeUrl(outDirUrl, fileUrl);
    return maybeDot(spec);
  }

  spec = path.normalize(spec);
  if (path.isAbsolute(spec)) {
    const fileUrl = pathToFileUrl(spec);
    spec = relativeUrl(outDirUrl, fileUrl);
    return maybeDot(spec);
  }

  spec = spec.replaceAll(PATH_TO_SPEC, "/");
  if (spec.startsWith("/")) {
    const fileUrl = pathToFileUrl(spec);
    spec = relativeUrl(outDirUrl, fileUrl);
    return maybeDot(spec);
  }

  spec = maybeDot(spec);
  return spec;
}

function maybeDot(spec: string): string {
  return spec.startsWith(".") ? spec : `./${spec}`;