[FEATURE] Resolvers: Use npm tags for determining 'latest'

lib/ui5Framework/AbstractResolver.js

@@ -215,6 +215,13 @@ class AbstractResolver {
  }
 
  static async resolveVersion(version, {ui5HomeDir, cwd} = {}) {
+ if (version === "latest") {
+ const tagVersion = this.fetchTag("latest", {ui5HomeDir, cwd});
+ if (tagVersion) {
+ return tagVersion;
+ }
+ }
+
  let spec;
  const isSnapshotVersion = version.toLowerCase().endsWith("-snapshot");
  if (version === "latest" || version === "latest-snapshot") {
@@ -238,6 +245,7 @@ class AbstractResolver {
  throw new Error(`Framework version specifier "${version}" is incorrect or not supported`);
  }
  }
+
  const versions = await this.fetchAllVersions({ui5HomeDir, cwd});
  const resolvedVersion = semver.maxSatisfying(versions, spec, {
  includePrerelease: isSnapshotVersion
@@ -271,6 +279,9 @@ class AbstractResolver {
  static fetchAllVersions(options) {
  throw new Error("AbstractResolver: static fetchAllVersions must be implemented!");
  }
+ static fetchTag(tagName, options) {
+ throw new Error("AbstractResolver: static fetchDistTag must be implemented!");
+ }
 }
 
 /* istanbul ignore else */

lib/ui5Framework/Openui5Resolver.js

@@ -93,6 +93,17 @@ class Openui5Resolver extends AbstractResolver {
  });
  return await installer.fetchPackageVersions({pkgName: OPENUI5_CORE_PACKAGE});
  }
+
+ static async fetchTag(tagName, {ui5HomeDir, cwd} = {}) {
+ const installer = new Installer({
+ cwd: cwd ? path.resolve(cwd) : process.cwd(),
+ ui5HomeDir:
+ ui5HomeDir ? path.resolve(ui5HomeDir) :
+ path.join(os.homedir(), ".ui5")
+ });
+ const distTags = await installer.fetchPackageDistTags({pkgName: OPENUI5_CORE_PACKAGE});
+ return distTags[tagName];
+ }
 }
 
 export default Openui5Resolver;

lib/ui5Framework/Sapui5Resolver.js

@@ -114,6 +114,17 @@ class Sapui5Resolver extends AbstractResolver {
  });
  return await installer.fetchPackageVersions({pkgName: DIST_PKG_NAME});
  }
+
+ static async fetchTag(tagName, {ui5HomeDir, cwd} = {}) {
+ const installer = new Installer({
+ cwd: cwd ? path.resolve(cwd) : process.cwd(),
+ ui5HomeDir:
+ ui5HomeDir ? path.resolve(ui5HomeDir) :
+ path.join(os.homedir(), ".ui5")
+ });
+ const distTags = await installer.fetchPackageDistTags({pkgName: DIST_PKG_NAME});
+ return distTags[tagName];
+ }
 }
 
 export default Sapui5Resolver;

lib/ui5Framework/npm/Installer.js

@@ -57,6 +57,11 @@ class Installer extends AbstractInstaller {
  return Object.keys(packument.versions);
  }
 
+ async fetchPackageDistTags({pkgName}) {
+ const packument = await this.getRegistry().requestPackagePackument(pkgName);
+ return packument["dist-tags"];
+ }
+
  async fetchPackageManifest({pkgName, version}) {
  const targetDir = this._getTargetDirForPackage({pkgName, version});
  try {