Add bazel recipe and update protobufjs to 6.10.2

ts/package.json

@@ -67,7 +67,7 @@
         "lodash.debounce": "^4.0.8",
         "lodash.throttle": "^4.1.1",
         "mathjax": "^3.1.2",
-        "protobufjs": "^6.10.1"
+        "protobufjs": "^6.10.2"
     },
     "files": [
         "dist/*"

ts/protobufjs.bzl

@@ -0,0 +1,29 @@
+load("//ts:copy.bzl", "copy_files")
+
+"Rule to copy protobufjs subset from node_modules to vendor folder."
+
+_include = [
+    "dist/protobuf.min.js",
+]
+
+_unwanted_prefix = "external/npm/node_modules/protobufjs/dist/"
+
+def _copy_protobufjs_impl(ctx):
+    wanted = []
+    for f in ctx.attr.protobufjs.files.to_list():
+        path = f.path
+        want = True
+
+        for substr in _include:
+            if substr in path:
+                output = path.replace(_unwanted_prefix, "")
+                wanted.append((f, output))
+
+    return copy_files(ctx, wanted)
+
+copy_protobufjs = rule(
+    implementation = _copy_protobufjs_impl,
+    attrs = {
+        "protobufjs": attr.label(default = "@npm//protobufjs:protobufjs__files"),
+    },
+)

ts/yarn.lock

@@ -2200,7 +2200,7 @@ protobufjs@6.8.8:
     "@types/node" "^10.1.0"
     long "^4.0.0"
 
-protobufjs@^6.10.1:
+protobufjs@^6.10.2:
   version "6.10.2"
   resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-6.10.2.tgz#b9cb6bd8ec8f87514592ba3fdfd28e93f33a469b"
   integrity sha512-27yj+04uF6ya9l+qfpH187aqEzfCF4+Uit0I9ZBQVqK09hk/SQzKa2MUqUpXaVa7LOFRg1TSSr3lVxGOk6c0SQ==