Move from `std::map` of `unique_ptr` to `absl::flat_hash_map`. #39

	# Copyright 2026 The OpenFst Authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	# See https://github.com/actions/runner-images.

	name: "Bazel (arm64 macOS)"

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	concurrency:
	group: ${{github.workflow}}-${{github.ref}}
	cancel-in-progress: true

	jobs:
	build-and-test-arm64-macos-bazel:
	name: Build and Test
	runs-on: macos-latest
	env:
	USE_BAZEL_VERSION: 9.0.0
	steps:
	- uses: actions/checkout@v6
	- name: Setup Bazel
	uses: bazel-contrib/setup-bazel@0.18.0
	with:
	# Avoid downloading Bazel every time.
	bazelisk-cache: true
	# Store build cache per workflow.
	disk-cache: ${{github.workflow}}
	# Share repository cache between workflows.
	repository-cache: true
	- name: Check Bazelisk
	run: bazelisk --version
	- name: Build
	run: \|
	bazelisk build -c opt //...
	- name: Test
	run: >-
	bazelisk test -c opt
	--test_size_filters=-enormous
	--test_output=errors
	--test_filter=PywrapFstTest.testRandGen*
	//...

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