@pierre/storage

@pierre/storage

Pierre Git Storage SDK for TypeScript/JavaScript applications.

End-to-End Smoke Test

• node packages/git-storage-sdk/tests/full-workflow.js -e production -s pierre -k /home/ian/pierre-prod-key.pem
  Drives the Pierre workflow via the SDK: creates a repository, writes commits, fetches branch and diff data, and confirms storage APIs. Swap in your own private key path when running outside this workstation and adjust -e/-s for non-production environments.

Installation

npm install @pierre/storage

Usage

Basic Setup

import { GitStorage } from '@pierre/storage';

// Initialize the client with your name and key
const store = new GitStorage({
  name: 'your-name', // e.g., 'v0'
  key: 'your-key', // Your API key
});

Creating a Repository

// Create a new repository with auto-generated ID
const repo = await store.createRepo();
console.log(repo.id); // e.g., '123e4567-e89b-12d3-a456-426614174000'

// Create a repository with custom ID
const customRepo = await store.createRepo({ id: 'my-custom-repo' });
console.log(customRepo.id); // 'my-custom-repo'

Finding a Repository

const foundRepo = await store.findOne({ id: 'repo-id' });
if (foundRepo) {
  const url = await foundRepo.getRemoteURL();
  console.log(`Repository URL: ${url}`);
}

Getting Remote URLs

The SDK generates secure URLs with JWT authentication for Git operations:

// Get URL with default permissions (git:write, git:read) and 1-year TTL
const url = await repo.getRemoteURL();
// Returns: https://t:[e-mail]/repo-id.git

// Configure the Git remote
console.log(`Run: git remote add origin ${url}`);

// Get URL with custom permissions and TTL
const readOnlyUrl = await repo.getRemoteURL({
  permissions: ['git:read'], // Read-only access
  ttl: 3600, // 1 hour in seconds
});

// Available permissions:
// - 'git:read'   - Read access to Git repository
// - 'git:write'  - Write access to Git repository
// - 'repo:write' - Create a repository

Ephemeral Branches

For working with ephemeral branches (temporary branches isolated from the main repository), use getEphemeralRemote():

// Get ephemeral namespace remote URL
const ephemeralUrl = await repo.getEphemeralRemoteURL();
// Returns: https://t:[e-mail]/repo-id+ephemeral.git

// Configure separate remotes for default and ephemeral branches
console.log(`Run: git remote add origin ${await repo.getRemoteURL()}`);
console.log(`Run: git remote add ephemeral ${await repo.getEphemeralRemoteURL()}`);

// Push ephemeral branch
// git push ephemeral feature-branch

// The ephemeral remote supports all the same options and permission as regular remotes

Working with Repository Content

Once you have a repository instance, you can perform various Git operations:

const repo = await store.createRepo();
// or
const repo = await store.findOne({ id: 'existing-repo-id' });

// Get file content (streaming)
const resp = await repo.getFileStream({
  path: 'README.md',
  ref: 'main', // optional, defaults to default branch
});
const text = await resp.text();
console.log(text);

// List all files in the repository
const files = await repo.listFiles({
  ref: 'main', // optional, defaults to default branch
});
console.log(files.paths); // Array of file paths

// List branches
const branches = await repo.listBranches({
  limit: 10,
  cursor: undefined, // for pagination
});
console.log(branches.branches);

// List commits
const commits = await repo.listCommits({
  branch: 'main', // optional
  limit: 20,
  cursor: undefined, // for pagination
});
console.log(commits.commits);

// Get branch diff
const branchDiff = await repo.getBranchDiff({
  branch: 'feature-branch',
  base: 'main', // optional, defaults to main
});
console.log(branchDiff.stats);
console.log(branchDiff.files);

// Get commit diff
const commitDiff = await repo.getCommitDiff({
  sha: 'abc123...',
});
console.log(commitDiff.stats);
console.log(commitDiff.files);

// Create a new branch from an existing one
const branch = await repo.createBranch({
  baseBranch: 'main',
  targetBranch: 'feature/demo',
  // baseIsEphemeral: true,
  // targetIsEphemeral: true,
});
console.log(branch.targetBranch, branch.commitSha);

// Create a commit using the streaming helper
const fs = await import('node:fs/promises');
const result = await repo
  .createCommit({
    targetBranch: 'main',
    commitMessage: 'Update docs',
    author: { name: 'Docs Bot', email: '[e-mail]' },
  })
  .addFileFromString('docs/changelog.md', '# v2.0.1\n- add streaming SDK\n')
  .addFile('docs/readme.md', await fs.readFile('README.md'))
  .deletePath('docs/legacy.txt')
  .send();

console.log(result.commitSha);
console.log(result.refUpdate.newSha);
console.log(result.refUpdate.oldSha); // All zeroes when the ref is created

The builder exposes:

• addFile(path, source, options) to attach bytes from strings, typed arrays, ArrayBuffers, Blob or File objects, ReadableStreams, or iterable/async-iterable sources.
• addFileFromString(path, contents, options) for text helpers (defaults to UTF-8 and accepts any Node.js BufferEncoding).
• deletePath(path) to remove files or folders.
• send() to finalize the commit and receive metadata about the new commit.

send() resolves to an object with the new commit metadata plus the ref update:

type CommitResult = {
  commitSha: string;
  treeSha: string;
  targetBranch: string;
  packBytes: number;
  blobCount: number;
  refUpdate: {
    branch: string;
    oldSha: string; // All zeroes when the ref is created
    newSha: string;
  };
};

If the backend reports a failure (for example, the branch advanced past expectedHeadSha) the builder throws a RefUpdateError containing the status, reason, and ref details.

Options

• targetBranch (required): Branch name (for example main) that will receive the commit.
• expectedHeadSha (optional): Commit SHA that must match the remote tip; omit to fast-forward unconditionally.
• baseBranch (optional): Mirrors the base_branch metadata and names an existing branch whose tip should seed targetBranch if it does not exist. Leave expectedHeadSha empty when creating a new branch from baseBranch; when both are provided and the branch already exists, expectedHeadSha continues to enforce the fast-forward guard.
• commitMessage (required): The commit message.
• author (required): Include name and email for the commit author.
• committer (optional): Include name and email. If omitted, the author identity is reused.
• signal (optional): Abort an in-flight upload with AbortController.
• targetRef (deprecated, optional): Fully qualified ref (for example refs/heads/main). Prefer targetBranch, which now accepts plain branch names.

Files are chunked into 4 MiB segments under the hood, so you can stream large assets without buffering them entirely in memory. File paths are normalized relative to the repository root.

The targetBranch must already exist on the remote repository unless you provide baseBranch (or the repository has no refs). To seed an empty repository, point to the default branch and omit expectedHeadSha. To create a missing branch within an existing repository, set baseBranch to the source branch and omit expectedHeadSha so the service clones that tip before applying your changes.

Apply a pre-generated diff

If you already have a patch (for example, the output of git diff --binary) you can stream it to the gateway with a single call. The SDK handles chunking and NDJSON streaming just like it does for regular commits:

const fs = await import('node:fs/promises');

const patch = await fs.readFile('build/generated.patch', 'utf8');

const diffResult = await repo.createCommitFromDiff({
  targetBranch: 'feature/apply-diff',
  expectedHeadSha: 'abc123def4567890abc123def4567890abc12345',
  commitMessage: 'Apply generated API changes',
  author: { name: 'Diff Bot', email: '[e-mail]' },
  diff: patch,
});

console.log(diffResult.commitSha);
console.log(diffResult.refUpdate.newSha);

The diff field accepts a string, Uint8Array, ArrayBuffer, Blob, File, ReadableStream, iterable, or async iterable of byte chunks—the same sources supported by the standard commit builder. createCommitFromDiff returns a Promise<CommitResult> and throws a RefUpdateError when the server rejects the diff (for example, if the branch tip changed).

Streaming Large Files

The commit builder accepts any async iterable of bytes, so you can stream large assets without buffering:

import { createReadStream } from 'node:fs';

await repo
  .createCommit({
    targetBranch: 'assets',
    expectedHeadSha: 'abc123def4567890abc123def4567890abc12345',
    commitMessage: 'Upload latest design bundle',
    author: { name: 'Assets Uploader', email: '[e-mail]' },
  })
  .addFile('assets/design-kit.zip', createReadStream('/tmp/design-kit.zip'))
  .send();

API Reference

GitStorage

class GitStorage {
  constructor(options: GitStorageOptions);
  async createRepo(options?: CreateRepoOptions): Promise<Repo>;
  async findOne(options: FindOneOptions): Promise<Repo | null>;
  getConfig(): GitStorageOptions;
}

Interfaces

interface GitStorageOptions {
  name: string; // Your identifier
  key: string; // Your API key
  defaultTTL?: number; // Default TTL for generated JWTs (seconds)
}

interface CreateRepoOptions {
  id?: string; // Optional custom repository ID
}

interface FindOneOptions {
  id: string; // Repository ID to find
}

interface Repo {
  id: string;
  getRemoteURL(options?: GetRemoteURLOptions): Promise<string>;
  getEphemeralRemoteURL(options?: GetRemoteURLOptions): Promise<string>;

  getFileStream(options: GetFileOptions): Promise<Response>;
  listFiles(options?: ListFilesOptions): Promise<ListFilesResult>;
  listBranches(options?: ListBranchesOptions): Promise<ListBranchesResult>;
  listCommits(options?: ListCommitsOptions): Promise<ListCommitsResult>;
  getBranchDiff(options: GetBranchDiffOptions): Promise<GetBranchDiffResult>;
  getCommitDiff(options: GetCommitDiffOptions): Promise<GetCommitDiffResult>;
}

interface GetRemoteURLOptions {
  permissions?: ('git:write' | 'git:read' | 'repo:write')[];
  ttl?: number; // Time to live in seconds (default: 31536000 = 1 year)
}

// Git operation interfaces
interface GetFileOptions {
  path: string;
  ref?: string; // Branch, tag, or commit SHA
  ttl?: number;
}

// getFileStream() returns a standard Fetch Response for streaming bytes

interface ListFilesOptions {
  ref?: string; // Branch, tag, or commit SHA
  ttl?: number;
}

interface ListFilesResponse {
  paths: string[]; // Array of file paths
  ref: string; // The resolved reference
}

interface ListFilesResult {
  paths: string[];
  ref: string;
}

interface ListBranchesOptions {
  cursor?: string;
  limit?: number;
  ttl?: number;
}

interface ListBranchesResponse {
  branches: BranchInfo[];
  nextCursor?: string;
  hasMore: boolean;
}

interface ListBranchesResult {
  branches: BranchInfo[];
  nextCursor?: string;
  hasMore: boolean;
}

interface BranchInfo {
  cursor: string;
  name: string;
  headSha: string;
  createdAt: string;
}

interface ListCommitsOptions {
  branch?: string;
  cursor?: string;
  limit?: number;
  ttl?: number;
}

interface ListCommitsResponse {
  commits: CommitInfo[];
  nextCursor?: string;
  hasMore: boolean;
}

interface ListCommitsResult {
  commits: CommitInfo[];
  nextCursor?: string;
  hasMore: boolean;
}

interface CommitInfo {
  sha: string;
  message: string;
  authorName: string;
  authorEmail: string;
  committerName: string;
  committerEmail: string;
  date: Date;
  rawDate: string;
}

interface GetBranchDiffOptions {
  branch: string;
  base?: string; // Defaults to 'main'
  ttl?: number;
  ephemeral?: boolean;
  ephemeralBase?: boolean;
}

interface GetCommitDiffOptions {
  sha: string;
  ttl?: number;
}

interface GetBranchDiffResponse {
  branch: string;
  base: string;
  stats: DiffStats;
  files: FileDiff[];
  filteredFiles: FilteredFile[];
}

interface GetBranchDiffResult {
  branch: string;
  base: string;
  stats: DiffStats;
  files: FileDiff[];
  filteredFiles: FilteredFile[];
}

interface GetCommitDiffResponse {
  sha: string;
  stats: DiffStats;
  files: FileDiff[];
  filteredFiles: FilteredFile[];
}

interface GetCommitDiffResult {
  sha: string;
  stats: DiffStats;
  files: FileDiff[];
  filteredFiles: FilteredFile[];
}
interface DiffStats {
  files: number;
  additions: number;
  deletions: number;
  changes: number;
}

type DiffFileState =
  | 'added'
  | 'modified'
  | 'deleted'
  | 'renamed'
  | 'copied'
  | 'type_changed'
  | 'unmerged'
  | 'unknown';

interface DiffFileBase {
  path: string;
  state: DiffFileState;
  rawState: string;
  oldPath?: string;
  bytes: number;
  isEof: boolean;
}

interface FileDiff {
  path: string;
  state: DiffFileState;
  rawState: string;
  oldPath?: string;
  bytes: number;
  isEof: boolean;
  raw: string;
}

interface FilteredFile {
  path: string;
  state: DiffFileState;
  rawState: string;
  oldPath?: string;
  bytes: number;
  isEof: boolean;
}

interface RefUpdate {
  branch: string;
  oldSha: string;
  newSha: string;
}

interface CommitResult {
  commitSha: string;
  treeSha: string;
  targetBranch: string;
  packBytes: number;
  blobCount: number;
  refUpdate: RefUpdate;
}

interface RestoreCommitOptions {
  targetBranch: string;
  targetCommitSha: string;
  commitMessage?: string;
  expectedHeadSha?: string;
  author: CommitSignature;
  committer?: CommitSignature;
}

interface RestoreCommitResult {
  commitSha: string;
  treeSha: string;
  targetBranch: string;
  packBytes: number;
  refUpdate: {
    branch: string;
    oldSha: string;
    newSha: string;
  };
}

Authentication

The SDK uses JWT (JSON Web Tokens) for authentication. When you call getRemoteURL(), it:

• Creates a JWT with your name, repository ID, and requested permissions
• Signs it with your key
• Embeds it in the Git remote URL as the password

The generated URLs are compatible with standard Git clients and include all necessary authentication.

Error Handling

The SDK validates inputs and provides helpful error messages:

try {
  const store = new GitStorage({ name: '', key: 'key' });
} catch (error) {
  // Error: GitStorage name must be a non-empty string.
}

try {
  const store = new GitStorage({ name: 'v0', key: '' });
} catch (error) {
  // Error: GitStorage key must be a non-empty string.
}
-

• Mutating operations (commit builder, restoreCommit) throw RefUpdateError when the backend reports a ref failure. Inspect error.status, error.reason, error.message, and error.refUpdate for details.

License

MIT