Function relativeFrom

packages/compiler-cli/src/ngtsc/file_system/src/helpers.ts:52–58

(path: string)

 * Convert the path `path` to a `PathSegment`, throwing an error if it's not a relative path.
 */
export function relativeFrom(path: string): PathSegment {
  const normalized = normalizeSeparators(path);
  if (fs.isRooted(normalized)) {
    throw new Error(`Internal Error: relativeFrom(${path}): path is not relative`);
  }
  return normalized as PathSegment;
}

/**
 * Static access to `dirname`.