Add Deno and Node to extra implementers of various specs

PULL_REQUEST_TEMPLATE.md.template

@@ -10,6 +10,6 @@ Thank you for contributing to the @@h1@@ Standard! Please describe the change yo
 - [ ] [Implementation bugs](https://github.com/whatwg/meta/blob/main/MAINTAINERS.md#handling-pull-requests) are filed:
    * Chrome: …
    * Firefox: …
-   * Safari: …
+   * Safari: …@@extra_implementers@@
 
 (See [WHATWG Working Mode: Changes](https://whatwg.org/working-mode#changes) for more details.)

factory.json

@@ -4,26 +4,49 @@
   },
   "console": {
     "extra_files": "images/*.*",
-    "not_these_templates": [".editorconfig"]
+    "not_these_templates": [".editorconfig"],
+    "extra_implementers": ["Deno", "Node.js"]
+  },
+  "dom": {
+    "extra_implementers": [
+      "Deno (only for AbortController, AbortSignal, Event, and EventTarget)",
+      "Node.js (only for AbortController, AbortSignal, Event, and EventTarget)"
+    ]
   },
   "encoding": {
     "extra_files": "*.txt *.json *.css",
     "post_build_step": "python visualize.py \"$$DIR/\"",
-    ".gitignore": ["/UnicodeData.txt"]
+    ".gitignore": ["/UnicodeData.txt"],
+    "extra_implementers": ["Deno", "Node.js"]
+  },
+  "fetch": {
+    "extra_implementers": ["Deno (not for CORS changes)"]
   },
   "html": {
-    "only_these_templates": ["LICENSE", "PULL_REQUEST_TEMPLATE.md"]
+    "only_these_templates": ["LICENSE", "PULL_REQUEST_TEMPLATE.md"],
+    "extra_implementers": [
+      "Deno (only for timers, structured clone, base64 utils, channel messaging, web workers, and web storage)",
+      "Node.js (only for timers, structured clone, base64 utils, channel messaging)"
+    ]
   },
   "infra": {
     "not_these_templates": ["PULL_REQUEST_TEMPLATE.md"]
   },
   "streams": {
     "extra_files": "demos/* demos/**/*",
-    "not_these_templates": [".editorconfig"]
+    "not_these_templates": [".editorconfig"],
+    "extra_implementers": ["Deno", "Node.js"]
+  },
+  "url": {
+    "extra_implementers": ["Deno", "Node.js"]
   },
   "webidl": {
     ".gitignore": ["/node_modules/"],
     "build_with_node": true,
-    "post_build_step": "node ./check-grammar.js \"$$DIR/index.html\" && npm run pp-webidl -- --input \"$$DIR/index.html\""
+    "post_build_step": "node ./check-grammar.js \"$$DIR/index.html\" && npm run pp-webidl -- --input \"$$DIR/index.html\"",
+    "extra_implementers": ["Deno"]
+  },
+  "websockets": {
+    "extra_implementers": ["Deno"]
   }
 }

factory.py

@@ -67,10 +67,11 @@ def fill_template(contents, variables):
             for entry in data:
                 output += "\n{}".format(entry)
             data = output
+        elif variable == "extra_implementers":
+            data = map(lambda name : "\n   * " + name + ": …", data)
         contents = contents.replace("@@{}@@".format(variable), data)
     return contents
 
-
 def update_files(shortname, name):
     os.chdir("../{}".format(shortname))
 
@@ -82,7 +83,8 @@ def update_files(shortname, name):
         "post_build_step": "",
         ".gitignore": [],
         "only_these_templates": None,
-        "not_these_templates": None
+        "not_these_templates": None,
+        "extra_implementers": []
     }
     if shortname in FACTORY_DB:
         variables.update(FACTORY_DB[shortname])