BREAKING CHANGE(core): Make API strict-by-default: remove *Strict variants, throw on not-found/exists conflicts, add explicit exists() methods, update docs/tests and bump deps

changelog.md

@@ -1,5 +1,107 @@
 # Changelog
 
+## 2025-11-20 - 4.0.0 - BREAKING CHANGE(core)
+Make API strict-by-default: remove *Strict variants, throw on not-found/exists conflicts, add explicit exists() methods, update docs/tests and bump deps
+
+- Breaking: Core API methods are strict by default and now throw errors instead of returning null when targets are missing or already exist (e.g. getBucketByName, getFile, getSubDirectoryByName, fastPut, fastPutStream).
+- Removed *Strict variants: fastPutStrict, getBucketByNameStrict, getFileStrict, getSubDirectoryByNameStrict — use the base methods which are now strict.
+- Added explicit existence checks: bucketExists (SmartBucket), fileExists (Directory/fileExists), directoryExists (Directory.directoryExists), and fastExists (Bucket.fastExists) to allow non-throwing checks before operations.
+- Return type updates: fastPut now returns Promise<File> (no null), getBucketByName/getFile/getSubDirectoryByName now return the respective objects or throw.
+- Improved error messages to guide callers (e.g. suggest setting overwrite:true on fastPut when object exists).
+- Updated README, changelog and tests to reflect the new strict semantics and usage patterns.
+- Developer/runtime dependency bumps: @git.zone/tsbuild, @git.zone/tsrun, @git.zone/tstest, @aws-sdk/client-s3, @push.rocks/smartstring, @tsclass/tsclass (version bumps recorded in package.json).
+- Major version bump to 4.0.0 to reflect breaking API changes.
+
+## 2025-11-20 - 4.0.0 - BREAKING: Strict by default + exists methods
+Complete API overhaul: all methods throw by default, removed all *Strict variants, added dedicated exists methods
+
+**Breaking Changes:**
+
+**Putters (Write Operations):**
+- `fastPut`: Return type `Promise<File | null>` → `Promise<File>`, throws when file exists and overwrite is false
+- `fastPutStream`: Now throws when file exists and overwrite is false (previously returned silently)
+- `fastPutStrict`: **Removed** - use `fastPut` directly
+
+**Getters (Read Operations):**
+- `getBucketByName`: Return type `Promise<Bucket | null>` → `Promise<Bucket>`, throws when bucket not found
+- `getBucketByNameStrict`: **Removed** - use `getBucketByName` directly
+- `getFile`: Return type `Promise<File | null>` → `Promise<File>`, throws when file not found
+- `getFileStrict`: **Removed** - use `getFile` directly
+- `getSubDirectoryByName`: Return type `Promise<Directory | null>` → `Promise<Directory>`, throws when directory not found
+- `getSubDirectoryByNameStrict`: **Removed** - use `getSubDirectoryByName` directly
+
+**New Methods (Existence Checks):**
+- `bucket.fastExists({ path })` - ✅ Already existed
+- `directory.fileExists({ path })` - **NEW** - Check if file exists
+- `directory.directoryExists(name)` - **NEW** - Check if subdirectory exists
+- `smartBucket.bucketExists(name)` - **NEW** - Check if bucket exists
+
+**Benefits:**
+- ✅ **Simpler API**: Removed 4 redundant *Strict methods
+- ✅ **Type-safe**: No nullable returns - `Promise<T>` not `Promise<T | null>`
+- ✅ **Fail-fast**: Errors throw immediately with precise stack traces
+- ✅ **Consistent**: All methods behave the same way
+- ✅ **Explicit**: Use exists() to check, then get() to retrieve
+- ✅ **Better debugging**: Error location is always precise
+
+**Migration Guide:**
+
+```typescript
+// ============================================
+// Pattern 1: Check then Get (Recommended)
+// ============================================
+
+// Before (v3.x):
+const bucket = await smartBucket.getBucketByName('my-bucket');
+if (bucket) {
+  // use bucket
+}
+
+// After (v4.0):
+if (await smartBucket.bucketExists('my-bucket')) {
+  const bucket = await smartBucket.getBucketByName('my-bucket'); // guaranteed to exist
+  // use bucket
+}
+
+// ============================================
+// Pattern 2: Try/Catch
+// ============================================
+
+// Before (v3.x):
+const file = await directory.getFile({ path: 'file.txt' });
+if (!file) {
+  // Handle not found
+}
+
+// After (v4.0):
+try {
+  const file = await directory.getFile({ path: 'file.txt' });
+  // use file
+} catch (error) {
+  // Handle not found
+}
+
+// ============================================
+// Pattern 3: Remove *Strict calls
+// ============================================
+
+// Before (v3.x):
+const file = await directory.getFileStrict({ path: 'file.txt' });
+
+// After (v4.0):
+const file = await directory.getFile({ path: 'file.txt' }); // already strict
+
+// ============================================
+// Pattern 4: Write Operations
+// ============================================
+
+// Before (v3.x):
+const file = await bucket.fastPutStrict({ path: 'file.txt', contents: 'data' });
+
+// After (v4.0):
+const file = await bucket.fastPut({ path: 'file.txt', contents: 'data' }); // already strict
+```
+
 ## 2025-08-18 - 3.3.10 - fix(helpers)
 Normalize and robustly parse S3 endpoint configuration; use normalized descriptor in SmartBucket and update dev tooling