Add a script to check/update the latest and next tags. (#4899)

This just prints out the commands that should be run right now, so they can be verified by hand.

buildutils/src/update-dist-tag.ts

@@ -0,0 +1,82 @@
+/*-----------------------------------------------------------------------------
+| Copyright (c) Jupyter Development Team.
+| Distributed under the terms of the Modified BSD License.
+|----------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import * as childProcess from 'child_process';
+import * as utils from './utils';
+
+// Handle the packages
+utils.getLernaPaths().forEach(pkgPath => {
+  handlePackage(pkgPath);
+});
+handlePackage(path.resolve('.'));
+
+/**
+ * Handle an individual package on the path - update the dependency.
+ */
+function handlePackage(packagePath: string): void {
+  let cmd: string;
+
+  // Read in the package.json.
+  packagePath = path.join(packagePath, 'package.json');
+  let data: any;
+  try {
+    data = utils.readJSONFile(packagePath);
+  } catch (e) {
+    console.log('Skipping package ' + packagePath);
+    return;
+  }
+
+  if (data.private) {
+    return;
+  }
+
+  const pkg = data.name;
+
+  cmd = `npm view ${pkg} versions --json`;
+  const versions: string[] = JSON.parse(
+    String(childProcess.execSync(cmd)).trim()
+  );
+
+  // Find latest stable
+  versions.reverse();
+  let prerelease = versions.find(v => !!v.match(/-\d$/));
+  let stable = versions.find(v => !v.match(/-\d$/));
+
+  // Make sure the prerelease we found is *after* the stable release
+  if (
+    prerelease &&
+    stable &&
+    versions.indexOf(prerelease) > versions.indexOf(stable)
+  ) {
+    prerelease = undefined;
+  }
+
+  cmd = `npm dist-tag list ${pkg}`;
+  let tags = String(childProcess.execSync(cmd))
+    .trim()
+    .split('\n');
+
+  console.log();
+  console.log(pkg, stable, prerelease, tags);
+
+  let stableCmd: string;
+  let prereleaseCmd: string;
+
+  if (stable) {
+    stableCmd = `npm dist-tag add ${pkg}@${stable} latest`;
+  } else {
+    stableCmd = `npm dist-tag rm ${pkg} latest`;
+  }
+
+  if (prerelease) {
+    prereleaseCmd = `npm dist-tag add ${pkg}@${prerelease} next`;
+  } else {
+    prereleaseCmd = `npm dist-tag rm ${pkg} next`;
+  }
+
+  console.log(stableCmd);
+  console.log(prereleaseCmd);
+}

package.json

@@ -43,6 +43,7 @@
     "test:services": "cd packages/services && jlpm test && cd examples/node && python main.py",
     "prettier": "prettier --write '**/*{.ts,.tsx,.js,.jsx,.css,.json,.md}'",
     "update:dependency": "node buildutils/lib/update-dependency.js",
+    "update:dist-tag": "node buildutils/lib/update-dist-tag.js",
     "watch": "run-p watch:dev watch:themes",
     "watch:dev": "python scripts/watch_dev.py",
     "watch:main": "jlpm run watch",