Preserve cache-busting URL prefix on js/css - closes #11

Also ensure we ship the .map files for better browser debugging.

datasette_vega/__init__.py

@@ -1,11 +1,29 @@
 from datasette import hookimpl
+import glob
+import os
+
+cache = {}
+static_dir = os.path.join(
+    os.path.dirname(__file__), 'static'
+)
+
+def cached_filepaths_for_extension(extension):
+    pattern = os.path.join(static_dir, '*.{}'.format(extension))
+    if pattern not in cache:
+        cache[pattern] = [
+            "/-/static-plugins/datasette_vega/{}".format(
+                os.path.basename(g)
+            )
+            for g in glob.glob(pattern)
+        ]
+    return cache[pattern]
 
 
 @hookimpl
 def extra_css_urls():
-    return ["/-/static-plugins/datasette_vega/datasette-vega.css"]
+    return cached_filepaths_for_extension('css')
 
 
 @hookimpl
 def extra_js_urls():
-    return ["/-/static-plugins/datasette_vega/datasette-vega.js"]
+    return cached_filepaths_for_extension('js')

setup.py

@@ -34,8 +34,8 @@ class BuildStatic(Command):
         check_output(['npm', 'install'], cwd=ROOT)
         check_output(['npm', 'run', 'build'], cwd=ROOT)
         check_output(['mkdir', '-p', 'datasette_vega/static'], cwd=ROOT)
-        check_output("mv build/static/js/*.js datasette_vega/static/datasette-vega.js", shell=True, cwd=ROOT)
-        check_output("mv build/static/css/*.css datasette_vega/static/datasette-vega.css", shell=True, cwd=ROOT)
+        check_output("mv build/static/js/* datasette_vega/static/", shell=True, cwd=ROOT)
+        check_output("mv build/static/css/* datasette_vega/static/", shell=True, cwd=ROOT)
 
 
 setup(
@@ -55,8 +55,9 @@ setup(
     },
     package_data={
         'datasette_vega': [
-            'static/datasette-vega.js',
-            'static/datasette-vega.css',
+            'static/*.js',
+            'static/*.css',
+            'static/*.map',
         ],
     },
     cmdclass={