better logging for modules

noxfile.py

@@ -1,11 +1,13 @@
 import re
+from pathlib import Path
 from typing import List
 
 import nox
 from nox.sessions import Session
 
 
-posargs_pattern = re.compile(r"^(\w+)\[(.+)\]$")
+HERE = Path(__file__).parent
+POSARGS_PATTERN = re.compile(r"^(\w+)\[(.+)\]$")
 
 
 def get_posargs(name: str, session: Session) -> List[str]:
@@ -21,7 +23,7 @@ def get_posargs(name: str, session: Session) -> List[str]:
     """
     collected_args: List[str] = []
     for arg in session.posargs:
-        match = posargs_pattern.match(arg)
+        match = POSARGS_PATTERN.match(arg)
         if match is not None:
             found_name, found_args = match.groups()
             if name == found_name:
@@ -34,16 +36,22 @@ def get_posargs(name: str, session: Session) -> List[str]:
 @nox.session(reuse_venv=True)
 def example(session: Session) -> None:
     """Run an example"""
+    if not session.posargs:
+        print("No example name given. Choose from:")
+        for found_example_file in (HERE / "docs" / "source" / "examples").glob("*.py"):
+            print("-", found_example_file.stem)
+        return None
+
     session.install("matplotlib")
-    session.install("-e", ".[stable]")
+    install_idom_dev(session)
     session.run("python", "scripts/one_example.py", *session.posargs)
 
 
 @nox.session(reuse_venv=True)
 def docs(session: Session) -> None:
     """Build and display documentation in the browser (automatically reloads on change)"""
     session.install("-r", "requirements/build-docs.txt")
-    session.install("-e", ".[all]")
+    install_idom_dev(session, extras="all")
     session.run(
         "python",
         "scripts/live_docs.py",
@@ -93,7 +101,7 @@ def test_python(session: Session) -> None:
     if "--no-cov" in pytest_args:
         session.install(".[all]")
     else:
-        session.install("-e", ".[all]")
+        install_idom_dev(session, extras="all")
 
     session.run("pytest", "tests", *pytest_args)
 
@@ -127,6 +135,11 @@ def test_style(session: Session) -> None:
 def test_docs(session: Session) -> None:
     """Verify that the docs build and that doctests pass"""
     session.install("-r", "requirements/build-docs.txt")
-    session.install("-e", ".[all]")
+    install_idom_dev(session, extras="all")
     session.run("sphinx-build", "-b", "html", "docs/source", "docs/build")
     session.run("sphinx-build", "-b", "doctest", "docs/source", "docs/build")
+
+
+def install_idom_dev(session: Session, extras: str = "stable") -> None:
+    session.install("-e", f".[{extras}]")
+    session.run("idom", "restore")

src/idom/client/app/src/index.js

@@ -1,9 +1,11 @@
 import { mountLayout } from "idom-client-react";
 
-const userPackages = import("./user-packages.js").then((packages) => {
-  packages.forEach((pkg) => {
-    console.log(`Loaded ${pkg}`);
-  });
+const userPackages = import("./user-packages.js").then((module) => {
+  for (const pkgName in module.default) {
+    module.default[pkgName].then((pkg) => {
+      console.log(`Loaded module '${pkgName}'`);
+    });
+  }
 });
 
 export function mountLayoutWithWebSocket(element, endpoint, importSourceURL) {

src/idom/client/app/src/user-packages.js

@@ -1 +1 @@
-export default [];
+export default {};

src/idom/client/manage.py

@@ -4,7 +4,7 @@
 from logging import getLogger
 from pathlib import Path
 from tempfile import TemporaryDirectory
-from typing import List, Sequence, Set, Union
+from typing import Iterable, List, Sequence, Set, Union
 
 from idom.config import IDOM_CLIENT_WEB_MODULE_BASE_URL
 
@@ -92,10 +92,9 @@ def build(packages_to_install: Sequence[str], clean_build: bool = False) -> None
                     packages_to_install.append(f"{dep_name}@{dep_ver}")
                     package_names_to_install.add(dep_name)
 
-        (temp_app_dir / "src" / "user-packages.js").write_text(
-            _USER_PACKAGES_FILE_TEMPLATE.format(
-                imports=",".join(f"import({pkg!r})" for pkg in package_names_to_install)
-            )
+        _write_user_packages_file(
+            temp_app_dir / "src" / "user-packages.js",
+            package_names_to_install,
         )
 
         logger.info(f"Installing {packages_to_install or 'packages'} ...")
@@ -146,6 +145,14 @@ def _run_subprocess(args: List[str], cwd: Path) -> None:
     return None
 
 
+def _write_user_packages_file(filepath: Path, packages: Iterable[str]) -> None:
+    filepath.write_text(
+        _USER_PACKAGES_FILE_TEMPLATE.format(
+            imports=",".join(f'"{pkg}":import({pkg!r})' for pkg in packages)
+        )
+    )
+
+
 _USER_PACKAGES_FILE_TEMPLATE = """// THIS FILE WAS GENERATED BY IDOM - DO NOT MODIFY
-export default [{imports}];
+export default {{{imports}}};
 """