refactor(@angular/cli): convert pacote usage from require to import

The removal of require usage supports the eventual shift to an ESM output for the CLI package.

Author: clydin

packages/angular/cli/src/typings.d.ts

@@ -23,3 +23,15 @@ declare module 'npm-pick-manifest' {
   ): import('../utilities/package-metadata').PackageManifest;
   export = pickManifest;
 }
+
+declare module 'pacote' {
+  export function manifest(
+    specifier: string,
+    options: Record<string, unknown>,
+  ): Promise<{ name: string; version: string }>;
+
+  export function packument(
+    specifier: string,
+    options: Record<string, unknown>,
+  ): Promise<import('../utilities/package-metadata').NpmRepositoryPackageJson>;
+}

packages/angular/cli/utilities/package-metadata.ts

@@ -11,11 +11,10 @@ import * as lockfile from '@yarnpkg/lockfile';
 import { existsSync, readFileSync } from 'fs';
 import * as ini from 'ini';
 import { homedir } from 'os';
+import * as pacote from 'pacote';
 import * as path from 'path';
 import { JsonSchemaForNpmPackageJsonFiles } from './package-json';
 
-const pacote = require('pacote');
-
 const npmPackageJsonCache = new Map<string, Promise<Partial<NpmRepositoryPackageJson>>>();
 
 export interface NpmRepositoryPackageJson {