Cleanup Dash test packages (#1391)

Author: Marc-Andre-Rivet

.gitignore

@@ -66,7 +66,7 @@ npm-debug*
 dash_renderer/
 dash_generator_test_component_standard/
 dash_generator_test_component_nested/
-dash_generator_test_component_sub_nested/
+dash_test_components/
 inst/
 man/
 R/

@plotly/dash-test-components/MANIFEST.in

@@ -0,0 +1,2 @@
+include dash_test_components/**
+include package.json

@plotly/dash-test-components/README.md

@@ -0,0 +1 @@
+Empty

@plotly/dash-test-components/babel.config.js

@@ -0,0 +1,6 @@
+const presets = [
+    '@babel/preset-env',
+    '@babel/preset-react'
+];
+
+module.exports = { presets };

@plotly/dash-test-components/base/__init__.py

@@ -0,0 +1,23 @@
+import json
+import os as _os
+
+_basepath = _os.path.dirname(__file__)
+_filepath = _os.path.abspath(_os.path.join(_basepath, 'package.json'))
+with open(_filepath) as f:
+    package = json.load(f)
+
+package_name = package['name'].replace(' ', '_').replace('-', '_')
+__version__ = package['version']
+
+from ._imports_ import *  # noqa: F401, F403
+from ._imports_ import __all__  # noqa: E402
+
+_js_dist = [
+    dict(
+        relative_package_path='dash_test_components.js',
+        namespace='dash_test_components'
+    )
+]
+
+for _component in __all__:
+    setattr(locals()[_component], '_js_dist', _js_dist)