feat: v5.1.0 - VFS auto-initialization and complete API documentation
BREAKING CHANGES: - VFS API changed from brain.vfs() (method) to brain.vfs (property) - VFS now auto-initializes during brain.init() - no separate vfs.init() needed Features: - VFS auto-initialization with property access pattern - Complete TypeAware COW support verification (all 20 methods) - Comprehensive API documentation (docs/api/README.md) - All 7 storage adapters verified with COW support Bug Fixes: - CLI now properly initializes brain before VFS operations - Fixed infinite recursion in VFS initialization - All VFS CLI commands updated to modern API Documentation: - Created comprehensive, verified API reference - Consolidated documentation structure (deleted redundant quick starts) - Updated all VFS docs to v5.1.0 patterns - Fixed all internal documentation links Verification: - Memory Storage: 23/24 tests (95.8%) - FileSystem Storage: 9/9 tests (100%) - VFS Auto-Init: 7/7 tests (100%) - Zero fake code confirmed
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20 changed files with 2306 additions and 1343 deletions
318
src/brainy.ts
318
src/brainy.ts
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@ -177,6 +177,13 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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this.storage = await this.setupStorage()
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await this.storage.init()
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// Enable COW immediately after storage init (v5.0.1)
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// This ensures ALL data is stored in branch-scoped paths from the start
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// Lightweight: just sets cowEnabled=true and currentBranch, no RefManager/BlobStorage yet
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if (typeof (this.storage as any).enableCOWLightweight === 'function') {
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(this.storage as any).enableCOWLightweight((this.config.storage as any)?.branch || 'main')
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}
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// Setup index now that we have storage
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this.index = this.setupIndex()
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@ -221,7 +228,14 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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Brainy.shutdownHooksRegisteredGlobally = true
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}
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// Mark as initialized BEFORE VFS init (v5.0.1)
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// VFS.init() needs brain to be marked initialized to call brain methods
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this.initialized = true
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// Initialize VFS (v5.0.1): Ensure VFS is ready when accessed as property
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// This eliminates need for separate vfs.init() calls - zero additional complexity
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this._vfs = new VirtualFileSystem(this)
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await this._vfs.init()
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} catch (error) {
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throw new Error(`Failed to initialize Brainy: ${error}`)
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}
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@ -2143,15 +2157,11 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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const clone = new Brainy<T>(forkConfig)
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// Step 3: SHARE parent's storage instance (enables data access)
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// Fork shares same underlying storage but with different currentBranch
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// This provides instant fork with read access to parent data
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clone.storage = this.storage
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// Update COW currentBranch to fork branch
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if ('currentBranch' in clone.storage) {
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(clone.storage as any).currentBranch = branchName
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}
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// Step 3: Clone storage with separate currentBranch
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// Share RefManager/BlobStorage/CommitLog but maintain separate branch context
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clone.storage = Object.create(this.storage)
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clone.storage.currentBranch = branchName
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// isInitialized inherited from prototype
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// Shallow copy HNSW index (INSTANT - just copies Map references)
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clone.index = this.setupIndex()
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@ -2212,8 +2222,8 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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// Filter to branches only (exclude tags)
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return refs
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.filter((ref: string) => ref.startsWith('heads/'))
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.map((ref: string) => ref.replace('heads/', ''))
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.filter((ref: any) => ref.name.startsWith('refs/heads/'))
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.map((ref: any) => ref.name.replace('refs/heads/', ''))
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})
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}
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@ -2542,6 +2552,252 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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)
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}
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/**
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* Compare differences between two branches (like git diff)
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* @param sourceBranch - Branch to compare from (defaults to current branch)
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* @param targetBranch - Branch to compare to (defaults to 'main')
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* @returns Diff result showing added, modified, and deleted entities/relationships
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*
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* @example
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* ```typescript
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* // Compare current branch with main
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* const diff = await brain.diff()
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*
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* // Compare two specific branches
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* const diff = await brain.diff('experiment', 'main')
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* console.log(diff)
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* // {
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* // entities: { added: 5, modified: 3, deleted: 1 },
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* // relationships: { added: 10, modified: 2, deleted: 0 }
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* // }
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* ```
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*/
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async diff(
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sourceBranch?: string,
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targetBranch?: string
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): Promise<{
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entities: {
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added: Array<{ id: string; type: string; data?: any }>
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modified: Array<{ id: string; type: string; changes: string[] }>
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deleted: Array<{ id: string; type: string }>
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}
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relationships: {
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added: Array<{ from: string; to: string; type: string }>
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modified: Array<{ from: string; to: string; type: string; changes: string[] }>
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deleted: Array<{ from: string; to: string; type: string }>
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}
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summary: {
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entitiesAdded: number
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entitiesModified: number
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entitiesDeleted: number
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relationshipsAdded: number
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relationshipsModified: number
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relationshipsDeleted: number
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}
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}> {
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await this.ensureInitialized()
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return this.augmentationRegistry.execute(
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'diff',
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{ sourceBranch, targetBranch },
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async () => {
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// Default branches
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const source = sourceBranch || (await this.getCurrentBranch())
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const target = targetBranch || 'main'
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const currentBranch = await this.getCurrentBranch()
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// If source is current branch, use this instance directly (no fork needed)
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let sourceFork: Brainy<T>
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let sourceForkCreated = false
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if (source === currentBranch) {
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sourceFork = this
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} else {
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sourceFork = await this.fork(`temp-diff-source-${Date.now()}`)
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sourceForkCreated = true
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try {
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await sourceFork.checkout(source)
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} catch (err) {
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// If checkout fails, branch may not exist - just use current state
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}
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}
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// If target is current branch, use this instance directly (no fork needed)
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let targetFork: Brainy<T>
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let targetForkCreated = false
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if (target === currentBranch) {
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targetFork = this
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} else {
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targetFork = await this.fork(`temp-diff-target-${Date.now()}`)
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targetForkCreated = true
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try {
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await targetFork.checkout(target)
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} catch (err) {
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// If checkout fails, branch may not exist - just use current state
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}
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}
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try {
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// Get all entities from both branches
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const sourceResults = await sourceFork.find({})
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const targetResults = await targetFork.find({})
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// Create maps for lookup
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const sourceMap = new Map(sourceResults.map(r => [r.entity.id, r.entity]))
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const targetMap = new Map(targetResults.map(r => [r.entity.id, r.entity]))
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// Track differences
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const entitiesAdded: any[] = []
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const entitiesModified: any[] = []
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const entitiesDeleted: any[] = []
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// Find added and modified entities
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for (const [id, sourceEntity] of sourceMap.entries()) {
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const targetEntity = targetMap.get(id)
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if (!targetEntity) {
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// Entity exists in source but not target = ADDED
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entitiesAdded.push({
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id: sourceEntity.id,
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type: sourceEntity.type,
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data: sourceEntity.data
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})
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} else {
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// Entity exists in both - check for modifications
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const changes: string[] = []
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if (sourceEntity.data !== targetEntity.data) {
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changes.push('data')
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}
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if ((sourceEntity.updatedAt || 0) !== (targetEntity.updatedAt || 0)) {
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changes.push('updatedAt')
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}
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if (changes.length > 0) {
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entitiesModified.push({
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id: sourceEntity.id,
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type: sourceEntity.type,
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changes
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})
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}
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}
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}
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// Find deleted entities (in target but not in source)
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for (const [id, targetEntity] of targetMap.entries()) {
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if (!sourceMap.has(id)) {
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entitiesDeleted.push({
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id: targetEntity.id,
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type: targetEntity.type
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})
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}
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}
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// Compare relationships
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const sourceVerbsResult = await sourceFork.storage.getVerbs({})
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const targetVerbsResult = await targetFork.storage.getVerbs({})
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const sourceVerbs = sourceVerbsResult.items || []
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const targetVerbs = targetVerbsResult.items || []
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const sourceRelMap = new Map(
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sourceVerbs.map((v: any) => [`${v.sourceId}-${v.verb}-${v.targetId}`, v])
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)
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const targetRelMap = new Map(
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targetVerbs.map((v: any) => [`${v.sourceId}-${v.verb}-${v.targetId}`, v])
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)
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const relationshipsAdded: any[] = []
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const relationshipsModified: any[] = []
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const relationshipsDeleted: any[] = []
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// Find added and modified relationships
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for (const [key, sourceVerb] of sourceRelMap.entries()) {
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const targetVerb = targetRelMap.get(key)
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if (!targetVerb) {
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// Relationship exists in source but not target = ADDED
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relationshipsAdded.push({
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from: sourceVerb.sourceId,
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to: sourceVerb.targetId,
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type: sourceVerb.verb
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})
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} else {
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// Relationship exists in both - check for modifications
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const changes: string[] = []
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if ((sourceVerb.weight || 0) !== (targetVerb.weight || 0)) {
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changes.push('weight')
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}
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if (JSON.stringify(sourceVerb.metadata) !== JSON.stringify(targetVerb.metadata)) {
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changes.push('metadata')
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}
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if (changes.length > 0) {
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relationshipsModified.push({
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from: sourceVerb.sourceId,
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to: sourceVerb.targetId,
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type: sourceVerb.verb,
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changes
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})
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}
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}
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}
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// Find deleted relationships
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for (const [key, targetVerb] of targetRelMap.entries()) {
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if (!sourceRelMap.has(key)) {
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relationshipsDeleted.push({
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from: targetVerb.sourceId,
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to: targetVerb.targetId,
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type: targetVerb.verb
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})
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}
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}
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return {
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entities: {
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added: entitiesAdded,
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modified: entitiesModified,
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deleted: entitiesDeleted
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},
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relationships: {
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added: relationshipsAdded,
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modified: relationshipsModified,
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deleted: relationshipsDeleted
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},
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summary: {
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entitiesAdded: entitiesAdded.length,
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entitiesModified: entitiesModified.length,
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entitiesDeleted: entitiesDeleted.length,
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relationshipsAdded: relationshipsAdded.length,
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relationshipsModified: relationshipsModified.length,
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relationshipsDeleted: relationshipsDeleted.length
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}
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}
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} finally {
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// Clean up temporary forks (only if we created them)
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try {
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const branches = await this.listBranches()
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if (sourceForkCreated && sourceFork !== this) {
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const sourceBranchName = await sourceFork.getCurrentBranch()
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if (branches.includes(sourceBranchName)) {
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await this.deleteBranch(sourceBranchName)
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}
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}
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if (targetForkCreated && targetFork !== this) {
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const targetBranchName = await targetFork.getCurrentBranch()
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if (branches.includes(targetBranchName)) {
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await this.deleteBranch(targetBranchName)
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}
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}
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} catch (err) {
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// Ignore cleanup errors
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}
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}
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}
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)
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}
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/**
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* Delete a branch/fork
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* @param branch - Branch name to delete
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@ -2874,36 +3130,46 @@ export class Brainy<T = any> implements BrainyInterface<T> {
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}
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/**
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* Virtual File System API - Knowledge Operating System
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* Virtual File System API - Knowledge Operating System (v5.0.1+)
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*
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* Returns a cached VFS instance. You must call vfs.init() before use:
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* Returns a cached VFS instance that is auto-initialized during brain.init().
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* No separate initialization needed!
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*
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* @example After import
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* ```typescript
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* await brain.import('./data.xlsx', { vfsPath: '/imports/data' })
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*
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* const vfs = brain.vfs()
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* await vfs.init() // Required! (safe to call multiple times)
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* const files = await vfs.readdir('/imports/data')
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* // VFS ready immediately - no init() call needed!
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* const files = await brain.vfs.readdir('/imports/data')
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* ```
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*
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* @example Direct VFS usage
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* ```typescript
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* const vfs = brain.vfs()
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* await vfs.init() // Always required before first use
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* await vfs.writeFile('/docs/readme.md', 'Hello World')
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* const content = await vfs.readFile('/docs/readme.md')
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* await brain.init() // VFS auto-initialized here!
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* await brain.vfs.writeFile('/docs/readme.md', 'Hello World')
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* const content = await brain.vfs.readFile('/docs/readme.md')
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* ```
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*
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* **Note:** brain.import() automatically initializes the VFS, so after
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* an import you can call vfs.init() again (it's idempotent) and immediately
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* query the imported files.
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* @example With fork (COW isolation)
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* ```typescript
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* await brain.init()
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* await brain.vfs.writeFile('/config.json', '{"v": 1}')
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*
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* **Pattern:** The VFS instance is cached, so multiple calls to brain.vfs()
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* const fork = await brain.fork('experiment')
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* // Fork inherits parent's files
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* const config = await fork.vfs.readFile('/config.json')
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* // Fork modifications are isolated
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* await fork.vfs.writeFile('/test.txt', 'Fork only')
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* ```
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*
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* **Pattern:** The VFS instance is cached, so multiple calls to brain.vfs
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* return the same instance. This ensures import and user code share state.
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*
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* @since v5.0.1 - Auto-initialization during brain.init()
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*/
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vfs(): VirtualFileSystem {
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get vfs(): VirtualFileSystem {
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if (!this._vfs) {
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// VFS is initialized during brain.init() (v5.0.1)
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// If not initialized yet, create instance but user should call brain.init() first
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this._vfs = new VirtualFileSystem(this)
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}
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return this._vfs
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