Generate ES6-style code (classes, exports, imports)

.github/workflows/ci.bazelrc

@@ -0,0 +1,13 @@
+# This file contains Bazel settings to apply on CI only.
+# It is referenced with a --bazelrc option in the call to bazel in ci.yaml
+
+# Debug where options came from
+build --announce_rc
+# This directory is configured in GitHub actions to be persisted between runs.
+build --disk_cache=~/.cache/bazel
+build --repository_cache=~/.cache/bazel-repo
+# Don't rely on test logs being easily accessible from the test runner,
+# though it makes the log noisier.
+test --test_output=errors
+# Allows tests to run bazelisk-in-bazel, since this is the cache folder used
+test --test_env=XDG_CACHE_HOME

.github/workflows/ci.yaml

@@ -0,0 +1,88 @@
+name: CI
+
+# Controls when the action will run.
+on:
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [main, es6]
+  pull_request:
+    branches: [main, es6]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+concurrency:
+    # Cancel previous actions from the same PR: https://stackoverflow.com/a/72408109
+    group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+    cancel-in-progress: true
+
+jobs:
+  # matrix-prep-* steps generate JSON used to create a dynamic actions matrix.
+  # Insanely complex for how simple this requirement is inspired from
+  # https://stackoverflow.com/questions/65384420/how-to-make-a-github-action-matrix-element-conditional
+
+  matrix-prep-bazelversion:
+    # Prepares the 'bazelversion' axis of the test matrix
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - id: bazel_from_bazelversion
+        run: echo "bazelversion=$(head -n 1 .bazelversion)" >> $GITHUB_OUTPUT
+      # bazel 5 testing disabled for now due to
+      # https://github.com/aspect-build/bazel-lib/issues/392
+      # - id: bazel_5
+      #   run: echo "bazelversion=5.3.2" >> $GITHUB_OUTPUT
+    outputs:
+      # Will look like ["<version from .bazelversion>"]
+      bazelversions: ${{ toJSON(steps.*.outputs.bazelversion) }}
+
+  bazel-build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    needs:
+      - matrix-prep-bazelversion
+
+    # Run bazel test in each workspace with each version of Bazel supported
+    strategy:
+      fail-fast: false
+      matrix:
+        bazelversion: ${{ fromJSON(needs.matrix-prep-bazelversion.outputs.bazelversions) }}
+        folder:
+          - "."
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v3
+
+      # Cache build and external artifacts so that the next ci build is incremental.
+      # Because github action caches cannot be updated after a build, we need to
+      # store the contents of each build in a unique cache key, then fall back to loading
+      # it on the next ci run. We use hashFiles(...) in the key and restore-keys- with
+      # the prefix to load the most recent cache for the branch on a cache miss. You
+      # should customize the contents of hashFiles to capture any bazel input sources,
+      # although this doesn't need to be perfect. If none of the input sources change
+      # then a cache hit will load an existing cache and bazel won't have to do any work.
+      # In the case of a cache miss, you want the fallback cache to contain most of the
+      # previously built artifacts to minimize build time. The more precise you are with
+      # hashFiles sources the less work bazel will have to do.
+      - name: Mount bazel caches
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/bazel
+            ~/.cache/bazel-repo
+          key: bazel-cache-${{ hashFiles('**/BUILD.bazel', '**/*.bzl', 'WORKSPACE') }}
+          restore-keys: bazel-cache-
+
+      - name: Configure Bazel version
+        working-directory: ${{ matrix.folder }}
+        run: echo "${{ matrix.bazelversion }}" > .bazelversion
+
+      - name: bazel build //generator/...
+        env:
+          # Bazelisk will download bazel to here, ensure it is cached between runs.
+          XDG_CACHE_HOME: ~/.cache/bazel-repo
+        working-directory: ${{ matrix.folder }}
+        run: bazel --bazelrc=$GITHUB_WORKSPACE/.github/workflows/ci.bazelrc --bazelrc=.github/workflows/ci.bazelrc build //generator/...

.gitignore

@@ -7,3 +7,14 @@ bazel-*
 /testproto_libs1.js
 /testproto_libs2.js
 /google-protobuf.js
+/google-protobuf.js.map
+
+### Automatically added by Hedron's Bazel Compile Commands Extractor: https://github.com/hedronvision/bazel-compile-commands-extractor
+# Ignore the `external` link (that is added by `bazel-compile-commands-extractor`). The link differs between macOS/Linux and Windows, so it shouldn't be checked in. The pattern must not end with a trailing `/` because it's a symlink on macOS/Linux.
+/external
+# Ignore links to Bazel's output. The pattern needs the `*` because people can change the name of the directory into which your repository is cloned (changing the `bazel-<workspace_name>` symlink), and must not end with a trailing `/` because it's a symlink on macOS/Linux.
+/bazel-*
+# Ignore generated output. Although valuable (after all, the primary purpose of `bazel-compile-commands-extractor` is to produce `compile_commands.json`!), it should not be checked in.
+/compile_commands.json
+# Ignore the directory in which `clangd` stores its local index.
+/.cache/

WORKSPACE

@@ -14,3 +14,20 @@ protobuf_deps()
 
 load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
 rules_pkg_dependencies()
+
+# Hedron's Compile Commands Extractor for Bazel
+# https://github.com/hedronvision/bazel-compile-commands-extractor
+#
+# Run bazel run @hedron_compile_commands//:refresh_all to get autocomplete
+# working in VS Code and other editors.
+http_archive(
+    name = "hedron_compile_commands",
+
+    # Replace the commit hash in both places (below) with the latest, rather than using the stale one here.
+    # Even better, set up Renovate and let it do the work for you (see "Suggestion: Updates" in the README).
+    url = "https://github.com/hedronvision/bazel-compile-commands-extractor/archive/ed994039a951b736091776d677f324b3903ef939.tar.gz",
+    strip_prefix = "bazel-compile-commands-extractor-ed994039a951b736091776d677f324b3903ef939",
+    # When you first run this tool, it'll recommend a sha256 hash to put here with a message like: "DEBUG: Rule 'hedron_compile_commands' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = ..."
+)
+load("@hedron_compile_commands//:workspace_setup.bzl", "hedron_compile_commands_setup")
+hedron_compile_commands_setup()