1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
export interface SpecifierMap {  [url: string]: string | null;}export interface Scopes {  [url: string]: SpecifierMap;}export interface ImportMap {  imports?: SpecifierMap;  scopes?: Scopes;}
export function isObject(object: unknown): object is Record<string, unknown> {  return typeof object == "object" && object !== null &&    object.constructor === Object;}export function sortObject(  normalized: Record<string, unknown>,): Record<string, unknown> {  const sorted: Record<string, unknown> = {};  const sortedKeys = Object.keys(normalized)    .sort((a, b) => b.length - a.length);  for (const key of sortedKeys) {    sorted[key] = normalized[key];  }  return sorted;}export function isImportMap(importMap: unknown): importMap is ImportMap {  return isObject(importMap) &&    (importMap.imports !== undefined ? isImports(importMap.imports) : true) &&    (importMap.scopes !== undefined ? isScopes(importMap.scopes) : true);}export function isImports(  importsMap: unknown,): importsMap is ImportMap {  return isObject(importsMap);}export function isScopes(  scopes: unknown,): scopes is Scopes {  return isObject(scopes) &&    Object.values(scopes).every((value) => isSpecifierMap(value));}export function isSpecifierMap(  specifierMap: unknown,): specifierMap is SpecifierMap {  return isObject(specifierMap);}export function isURL(url: unknown): boolean {  try {    new URL(url as string);    return true;  } catch {    return false;  }}