Dynamically set the NPM tag

jupyter_releaser/cli.py

@@ -600,6 +600,7 @@ def extract_release(auth, dist_dir, dry_run, release_url):
 
 
 @main.command()
+@add_options(auth_options)
 @add_options(dist_dir_options)
 @click.option("--npm-token", help="A token for the npm release", envvar="NPM_TOKEN")
 @click.option(
@@ -626,30 +627,40 @@ def extract_release(auth, dist_dir, dry_run, release_url):
     envvar="TWINE_REPOSITORY_URL",
     default="https://upload.pypi.org/legacy/",
 )
+@click.option(
+    "--npm-tag",
+    help="The npm tag. It defaults to 'next' if it is a prerelease otherwise to 'latest'.",
+    envvar="NPM_TAG",
+    default="",
+)
 @add_options(dry_run_options)
 @add_options(python_packages_options)
 @add_options(release_url_options)
 @use_checkout_dir()
 def publish_assets(
+    auth,
     dist_dir,
     npm_token,
     npm_cmd,
     twine_cmd,
     npm_registry,
     twine_repository_url,
+    npm_tag,
     dry_run,
     release_url,
     python_packages,
 ):
     """Publish release asset(s)"""
     for python_package in python_packages:
         lib.publish_assets(
+            auth,
             dist_dir,
             npm_token,
             npm_cmd,
             twine_cmd,
             npm_registry,
             twine_repository_url,
+            npm_tag,
             dry_run,
             release_url,
             python_package,

jupyter_releaser/lib.py

@@ -8,6 +8,7 @@
 import shutil
 import tempfile
 import uuid
+import warnings
 from datetime import datetime, timezone
 from glob import glob
 from pathlib import Path
@@ -315,12 +316,14 @@ def extract_release(auth, dist_dir, dry_run, release_url):
 
 
 def publish_assets(  # noqa
+    auth,
     dist_dir,
     npm_token,
     npm_cmd,
     twine_cmd,
     npm_registry,
     twine_repository_url,
+    npm_tag,
     dry_run,
     release_url,
     python_package,
@@ -334,6 +337,22 @@ def publish_assets(  # noqa
         npm.handle_npm_config(npm_token)
         if npm_token:
             util.run("npm whoami")
+        # check if this is a prerelease
+        match = util.parse_release_url(release_url)
+        owner, repo = match["owner"], match["repo"]
+
+        gh = util.get_gh_object(dry_run=dry_run, owner=owner, repo=repo, token=auth)
+        release = util.release_for_url(gh, release_url)
+        is_prerelease = release.prerelease
+
+        if " --tag " not in npm_cmd:
+            npm_tag = npm_tag or ("next" if is_prerelease else "latest")
+            npm_cmd = f"{npm_cmd} --tag {npm_tag}"
+        elif npm_tag:
+            warnings.warn(
+                f"The NPM tag '{npm_tag}' will be ignored as at tag option is set in NPM command; '{npm_cmd}'.",
+                stacklevel=2,
+            )
 
     res = python_package.split(":")
     python_package_path = res[0]

jupyter_releaser/tests/test_cli.py

@@ -152,6 +152,7 @@ def test_list_envvars(runner):
 npm-cmd: RH_NPM_COMMAND
 npm-install-options: RH_NPM_INSTALL_OPTIONS
 npm-registry: NPM_REGISTRY
+npm-tag: NPM_TAG
 npm-token: NPM_TOKEN
 post-version-message: RH_POST_VERSION_MESSAGE
 post-version-spec: RH_POST_VERSION_SPEC
@@ -593,21 +594,25 @@ def wrapped(cmd, **kwargs):
     assert "after-publish-assets" in log
 
 
-def test_publish_assets_npm(npm_dist, runner, mocker):
+def test_publish_assets_npm(npm_dist, runner, mocker, mock_github):
+    # Create the release.
     dist_dir = npm_dist / util.CHECKOUT_NAME / "dist"
+    release = create_draft_release("bar", glob(f"{dist_dir!s}/*.*"))
+
+    os.environ["RH_RELEASE_URL"] = release.html_url
+
     orig_run = util.run
     called = 0
 
     def wrapped(cmd, **kwargs):
         nonlocal called
-        if cmd.startswith("npm publish --dry-run"):
+        if cmd.startswith("npm publish --dry-run --tag next"):
             called += 1
         return orig_run(cmd, **kwargs)
 
     mock_run = mocker.patch("jupyter_releaser.util.run", wraps=wrapped)
 
     runner(["publish-assets", "--npm-cmd", "npm publish --dry-run", "--dist-dir", dist_dir])
-
     assert called == 3, called