support jsdelivr

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](https://semver.org/).
 
+## [0.2.5] - Unreleased
+### Added
+- Support for themes from jsDelivr.
+
 ## [0.2.4] - 2024-06-14
 ### Fixed
 - Upgrade Lume in an external import map file.
@@ -97,6 +101,7 @@ First version
 [#1]: https://github.com/lumeland/init/issues/1
 [#3]: https://github.com/lumeland/init/issues/3
 
+[0.2.5]: https://github.com/lumeland/init/compare/v0.2.4...HEAD
 [0.2.4]: https://github.com/lumeland/init/compare/v0.2.3...v0.2.4
 [0.2.3]: https://github.com/lumeland/init/compare/v0.2.2...v0.2.3
 [0.2.2]: https://github.com/lumeland/init/compare/v0.2.1...v0.2.2

steps/utils.ts

@@ -9,6 +9,17 @@ export async function getLatestVersion(
   return versions.latest;
 }
 
+/** Return the latest stable version from the deno.land/x repository */
+export async function getLatestJsDelivrVersion(
+  name: string,
+): Promise<string> {
+  const response = await fetch(
+    `https://data.jsdelivr.com/v1/package/gh/${name.toLowerCase()}`,
+  );
+  const versions = await response.json();
+  return versions.versions[0];
+}
+
 export async function getLatestGitHubTag(name: string): Promise<string> {
   const response = await fetch(
     `https://api.github.com/repos/${name}/tags`,
@@ -26,16 +37,26 @@ export async function getLatestGitHubCommit(name: string): Promise<string> {
 }
 
 export async function resolveOrigin(url: string): Promise<string> {
-  const results = url.match(/^https:\/\/deno.land\/x\/([^\/]+)$/);
+  const denoland = url.match(/^https:\/\/deno.land\/x\/([^\/]+)$/);
+
+  if (denoland) {
+    const [, name] = denoland;
+    const version = await getLatestVersion(name);
 
-  if (!results) {
-    throw new Error(`Invalid URL: ${url}`);
+    return `https://deno.land/x/${name}@${version}`;
   }
 
-  const [, name] = results;
-  const version = await getLatestVersion(name);
+  const jsdelivr = url.match(
+    /^https:\/\/cdn\.jsdelivr\.net\/gh\/([^\/]+\/[^\/]+)$/,
+  );
+  if (jsdelivr) {
+    const [, name] = jsdelivr;
+    const version = await getLatestJsDelivrVersion(name);
+
+    return `https://cdn.jsdelivr.net/gh/${name}@${version}`;
+  }
 
-  return `https://deno.land/x/${name}@${version}`;
+  throw new Error(`Could not resolve origin for ${url}`);
 }
 
 export async function loadFile(url: string): Promise<Uint8Array> {