fix(tooling): add fast mode to committer helper

scripts/committer

@@ -4,7 +4,7 @@ set -euo pipefail
 # Disable glob expansion to handle brackets in file paths
 set -f
 usage() {
-  printf 'Usage: %s [--force] "commit message" "file" ["file" ...]\n' "$(basename "$0")" >&2
+  printf 'Usage: %s [--force] [--fast] "commit message" "file" ["file" ...]\n' "$(basename "$0")" >&2
   exit 2
 }
 
@@ -13,10 +13,22 @@ if [ "$#" -lt 2 ]; then
 fi
 
 force_delete_lock=false
-if [ "${1:-}" = "--force" ]; then
-  force_delete_lock=true
-  shift
-fi
+fast_commit=false
+while [[ "${1:-}" == --* ]]; do
+  case "${1:-}" in
+    --force)
+      force_delete_lock=true
+      shift
+      ;;
+    --fast)
+      fast_commit=true
+      shift
+      ;;
+    *)
+      usage
+      ;;
+  esac
+done
 
 if [ "$#" -lt 2 ]; then
   usage
@@ -190,8 +202,15 @@ if git diff --staged --quiet; then
 fi
 
 committed=false
-if run_git_with_lock_retry "commit" git commit -m "$commit_message" -- "${files[@]}"; then
-  committed=true
+if [ "$fast_commit" = true ]; then
+  declare -a commit_env=(FAST_COMMIT=1)
+  if run_git_with_lock_retry "commit" env "${commit_env[@]}" git commit -m "$commit_message" -- "${files[@]}"; then
+    committed=true
+  fi
+else
+  if run_git_with_lock_retry "commit" git commit -m "$commit_message" -- "${files[@]}"; then
+    committed=true
+  fi
 fi
 
 if [ "$committed" = false ]; then

test/scripts/committer.test.ts

@@ -37,10 +37,24 @@ function writeRepoFile(repo: string, relativePath: string, contents: string) {
   writeFileSync(fullPath, contents);
 }
 
+function installHook(repo: string, relativePath: string, contents: string) {
+  const fullPath = path.join(repo, relativePath);
+  mkdirSync(path.dirname(fullPath), { recursive: true });
+  writeFileSync(fullPath, contents, {
+    encoding: "utf8",
+    mode: 0o755,
+  });
+  git(repo, "config", "core.hooksPath", path.dirname(relativePath));
+}
+
 function commitWithHelper(repo: string, commitMessage: string, ...args: string[]) {
   return run(repo, "bash", [scriptPath, commitMessage, ...args]);
 }
 
+function commitWithHelperArgs(repo: string, ...args: string[]) {
+  return run(repo, "bash", [scriptPath, ...args]);
+}
+
 function committedPaths(repo: string) {
   const output = git(repo, "diff-tree", "--no-commit-id", "--name-only", "-r", "HEAD");
   return output.split("\n").filter(Boolean).toSorted();
@@ -105,4 +119,45 @@ describe("scripts/committer", () => {
     expect(committedPaths(repo)).toEqual(["CHANGELOG.md"]);
     expect(git(repo, "status", "--short")).toContain("M unrelated.ts");
   });
+
+  it("supports --fast before the commit message", () => {
+    const repo = createRepo();
+    writeRepoFile(repo, "note.txt", "hello\n");
+
+    const output = commitWithHelperArgs(repo, "--fast", "test: fast helper", "note.txt");
+
+    expect(output).toContain('Committed "test: fast helper" with 1 files');
+    expect(committedPaths(repo)).toEqual(["note.txt"]);
+  });
+
+  it("supports combining --force and --fast", () => {
+    const repo = createRepo();
+    writeRepoFile(repo, "note.txt", "hello\n");
+
+    const output = commitWithHelperArgs(
+      repo,
+      "--force",
+      "--fast",
+      "test: fast forced helper",
+      "note.txt",
+    );
+
+    expect(output).toContain('Committed "test: fast forced helper" with 1 files');
+    expect(committedPaths(repo)).toEqual(["note.txt"]);
+  });
+
+  it("passes FAST_COMMIT through to git hooks when using --fast", () => {
+    const repo = createRepo();
+    installHook(
+      repo,
+      ".githooks/pre-commit",
+      '#!/usr/bin/env bash\nset -euo pipefail\n[ "${FAST_COMMIT:-}" = "1" ] || exit 91\n',
+    );
+    writeRepoFile(repo, "note.txt", "hello\n");
+
+    const output = commitWithHelperArgs(repo, "--fast", "test: fast hook env", "note.txt");
+
+    expect(output).toContain('Committed "test: fast hook env" with 1 files');
+    expect(committedPaths(repo)).toEqual(["note.txt"]);
+  });
 });