chore: option to fetch from npm registry

Author: cyberalien

@iconify/tools/src/download/npm/index.ts

@@ -20,8 +20,7 @@ interface IfModifiedSinceOption {
  * Options for downloadNPMPackage()
  */
 export interface DownloadNPMPackageOptions
-	extends ExportTargetOptions,
-		Partial<IfModifiedSinceOption> {
+	extends ExportTargetOptions, Partial<IfModifiedSinceOption> {
 	// Package
 	package: string;
 
@@ -30,6 +29,10 @@ export interface DownloadNPMPackageOptions
 
 	// Log commands
 	log?: boolean;
+
+	// Use fetch instead of 'npm' command to get version
+	// Can be used in environments where 'npm' command is not available
+	fetch?: boolean;
 }
 
 /**

@iconify/tools/src/download/npm/types.ts

@@ -7,4 +7,8 @@ export interface NPMPackageOptions {
 
 	// Tag, default is 'latest'
 	tag?: string;
+
+	// Use fetch instead of 'npm' command to get version
+	// Can be used in environments where 'npm' command is not available
+	fetch?: boolean;
 }

@iconify/tools/src/download/npm/version.ts

@@ -1,6 +1,7 @@
 import fs from 'node:fs/promises';
 import type { NPMPackageOptions } from './types.js';
 import { execAsync } from '../../misc/exec.js';
+import { getFetch } from '../api/fetch.js';
 
 export interface GetNPMVersionResult {
 	// Version
@@ -17,12 +18,7 @@ export async function getNPMVersion(
 	options: NPMPackageOptions
 ): Promise<GetNPMVersionResult> {
 	const tag = options.tag || 'latest';
-	const result = await execAsync(
-		`npm view ${options.package}@${tag} --json`,
-		{
-			maxBuffer: 1024 * 1024 * 8,
-		}
-	);
+	const packageName = options.package;
 
 	interface NPMViewResponse {
 		'name': string;
@@ -38,10 +34,30 @@ export async function getNPMVersion(
 			unpackedSize: number;
 		};
 	}
-	const data = JSON.parse(result.stdout) as NPMViewResponse;
+
+	let data: NPMViewResponse;
+	if (options.fetch) {
+		// Fetch from registry.npmjs.org
+		const fetch = getFetch();
+		data = (await fetch(
+			`https://registry.npmjs.org/${packageName}/${tag}`
+		).then((res) => res.json())) as NPMViewResponse;
+	} else {
+		// Execute 'npm' command
+		const result = await execAsync(
+			`npm view ${packageName}@${tag} --json`,
+			{
+				maxBuffer: 1024 * 1024 * 8,
+			}
+		);
+		data = JSON.parse(result.stdout) as NPMViewResponse;
+	}
+
 	return {
 		version: data.version,
-		file: data.dist?.tarball,
+		file:
+			data.dist?.tarball ??
+			`https://registry.npmjs.org/${packageName}/-/${packageName.split('/').pop()!}-${data.version}.tgz`,
 	};
 }
 

@iconify/tools/tests/import/npm-test.ts

@@ -47,6 +47,7 @@ describe('Downloading NPM package', () => {
 			ifModifiedSince: true,
 			package: testPackage,
 			target,
+			fetch: true,
 		});
 		const expectedResult: typeof result = {
 			downloadType: 'npm',
@@ -99,6 +100,7 @@ describe('Downloading NPM package', () => {
 			package: testPackage,
 			tag: branch.tag,
 			target,
+			exec: false,
 		});
 		expect(result).toBe('not_modified');
 	}