chore: move //src/js to //js

refs: #285

1 files changed, 48 insertions, 0 deletions

diff --git a/js/pbjs_hack.py b/js/pbjs_hack.py
new file mode 100755
index 000000000..19b7c1691
--- /dev/null
+++ b/js/pbjs_hack.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+"""
+gn can only run python scripts.
+
+Generates protobufjs code.
+"""
+import subprocess
+import sys
+import os
+# TODO(ry) Ideally protobufjs output files should be written into
+# target_gen_dir, but its difficult to get this working in a way that parcel can
+# resolve their location. (Parcel does not support NODE_PATH.) Therefore this
+# hack: write the generated msg.pb.js and msg.pb.d.ts outputs into the js/
+# folder, and we check them into the repo. Hopefully this hack can be removed at
+# some point. If msg.proto is changed, commit changes to the generated JS
+# files.
+
+js_path = os.path.dirname(os.path.realpath(__file__))
+pbjs_path = os.path.join(js_path, "node_modules", "protobufjs", "bin")
+pbjs_bin = os.path.join(pbjs_path, "pbjs")
+pbts_bin = os.path.join(pbjs_path, "pbts")
+msg_pbjs_out = os.path.join(js_path, "msg.pb.js")
+msg_pbts_out = os.path.join(js_path, "msg.pb.d.ts")
+assert os.path.exists(pbjs_bin)
+assert os.path.exists(pbts_bin)
+
+proto_in = sys.argv[1]
+stamp_file = sys.argv[2]
+
+
+def touch(fname):
+    if os.path.exists(fname):
+        os.utime(fname, None)
+    else:
+        open(fname, 'a').close()
+
+
+subprocess.check_call([
+    "node", pbjs_bin, "--target=static-module", "--wrapper=commonjs",
+    "--out=" + msg_pbjs_out, proto_in
+])
+assert os.path.exists(msg_pbjs_out)
+
+subprocess.check_call(
+    ["node", pbts_bin, "--out=" + msg_pbts_out, msg_pbjs_out])
+assert os.path.exists(msg_pbts_out)
+
+touch(stamp_file)