refactor(build): replace eslint/prettier with oxlint/oxfmt, add debug… (#160)

* refactor(build): replace eslint/prettier with oxlint/oxfmt, add debug build variant, remove checksum cache

Linting/formatting:
- Replace eslint + prettier with oxlint and oxfmt
- Add .oxlintrc.json and .oxfmtrc.json config files
- Remove eslint.config.mjs, prettier.config.js
- Update package.json: lint/format scripts; remove eslint/prettier devDeps; add oxlint

Debug/release build variants:
- Add PRIVMX_BUILD_TYPE CMake cache variable to all five C++ components
  (async-engine, webendpoint-cpp, drv-crypto, drv-ecc, drv-net)
- Debug: -O0 -g, ASSERTIONS=2, SAFE_HEAP=1, STACK_OVERFLOW_CHECK=2, no LTO
- Release: unchanged (-O3, LTO, ASSERTIONS=0, SAFE_HEAP=0)
- Add build:debug and build:wasm:debug npm scripts
- pipeline.sh reads PRIVMX_BUILD_TYPE from env; passes it to build_api
- build_api, build_async_engine, build_webdrivers read build type; reconfigure
  only when CMakeCache.txt is absent or the build type changed
- Add configure_if_needed helper in build_webdrivers to avoid repetition

Remove custom checksum cache:
- Delete scripts/check_dir_checksum
- Remove check_dir_checksum calls, RESULT case/esac blocks, and need_rebuild
  sentinel logic from build_gmp, build_poco, build_privmx_endpoint, build_pson,
  build_secp, build_api, build_async_engine, build_webdrivers
- Replace with: configure step guarded by CMakeCache.txt / Makefile existence;
  make always runs (Make's own dependency graph skips unchanged units)

Add clean:wasm script:
- scripts/clean_wasm removes build-emscripten/ from every first-party C++
  component and all dependency_sources/ subdirectories
- Add "clean:wasm" npm script

README:
- Update build scripts table to include build:debug, build:wasm:debug, clean:wasm
- Add "Release vs Debug builds" section with flag comparison table

* package-lock sync

* fix: lint fix

---------

Co-authored-by: Paweł Aniszewski <paniszewski@simplito.com>

Author: imaTik0

.oxfmtrc.json

@@ -0,0 +1,12 @@
+{
+  "$schema": "./node_modules/oxfmt/configuration_schema.json",
+  "semi": true,
+  "singleQuote": false,
+  "printWidth": 100,
+  "trailingComma": "all",
+  "bracketSpacing": true,
+  "arrowParens": "always",
+  "tabWidth": 4,
+  "sortPackageJson": false,
+  "ignorePatterns": []
+}

.oxlintrc.json

@@ -0,0 +1,44 @@
+{
+    "$schema": "./node_modules/oxlint/configuration_schema.json",
+    "plugins": ["typescript", "unicorn", "oxc"],
+    "categories": {
+        "correctness": "error",
+        "suspicious": "warn"
+    },
+    "env": {
+        "builtin": true,
+        "browser": true
+    },
+    "ignorePatterns": [
+        "dist/**",
+        "assets/**",
+        "node_modules/**",
+        "dependency_sources/**",
+        "drivers/**",
+        "async-engine/**",
+        "webendpoint-cpp/**",
+        "emsdk/**"
+    ],
+    "overrides": [
+        {
+            "files": ["**/*.test.ts", "**/__tests__/**", "**/__mocks__/**"],
+            "plugins": ["jest"],
+            "rules": {
+                "jest/expect-expect": "off",
+                "jest/require-to-throw-message": "off"
+            }
+        }
+    ],
+    "rules": {
+        "no-console": "off",
+        "no-shadow": "off",
+        "no-useless-constructor": "off",
+        "preserve-caught-error": "off",
+        "typescript/no-extraneous-class": "off",
+        "unicorn/prefer-query-selector": "off",
+        "unicorn/no-array-for-each": "off",
+        "unicorn/no-array-reduce": "off",
+        "unicorn/prefer-add-event-listener": "off",
+        "unicorn/require-post-message-target-origin": "off"
+    }
+}

README.md

@@ -47,11 +47,41 @@ The project uses a combined pipeline to compile the C++ core to Wasm and bundle
 
 | Command | Description |
 | --- | --- |
-| `npm run build` | Runs the full pipeline: Clean -> Build Wasm -> Compile TS -> Bundle Webpack. |
-| `npm run build:wasm` | Compiles the C++ source code to WebAssembly using `scripts/pipeline.sh`. |
+| `npm run build` | Full release build: Clean → Build Wasm → Compile TS → Bundle Webpack. |
+| `npm run build:debug` | Full debug build (see below). |
+| `npm run build:wasm` | Compiles the C++ source to WebAssembly (release flags). |
+| `npm run build:wasm:debug` | Compiles the C++ source to WebAssembly (debug flags). |
 | `npm run build:js` | Compiles TypeScript (`tsc`) and bundles assets (`webpack`). |
 | `npm run watch:types` | Watches for TypeScript changes. |
 
+### Release vs Debug builds
+
+By default all builds are **release** builds: `-O3`, LTO enabled, `ASSERTIONS=0`, `SAFE_HEAP=0`.
+
+A **debug** build swaps in the following flags for the WASM module:
+
+| Flag | Release | Debug |
+| --- | --- | --- |
+| Optimisation | `-O3` + `-flto` | `-O0 -g` |
+| Emscripten assertions | `ASSERTIONS=0` | `ASSERTIONS=2` |
+| Heap safety checks | `SAFE_HEAP=0` | `SAFE_HEAP=1` |
+| Stack overflow check | off | `STACK_OVERFLOW_CHECK=2` |
+| Demangled stack traces | off | `DEMANGLE_SUPPORT=1` |
+| C++ `DEBUG` macro | not defined | defined |
+
+```bash
+# Full debug build (WASM + JS)
+npm run build:debug
+
+# WASM only (faster iteration)
+npm run build:wasm:debug
+
+# Or pass the env variable directly to the pipeline script
+PRIVMX_BUILD_TYPE=debug npm run build:wasm
+```
+
+> **Note:** Debug builds are significantly larger and slower than release builds. Use them only for local development and troubleshooting.
+
 ## Testing
 
 The project employs a dual testing strategy: **Jest** for unit logic and **Playwright** for End-to-End (E2E) integration testing.

async-engine/CMakeLists.txt

@@ -34,11 +34,27 @@ Threads::Threads
     Pson
 )
 
-target_compile_options(asyncengine PUBLIC 
-    -O3
-    -pthread
-    -fexceptions # Ensure exceptions are enabled for async logic
-)
+# ---------------------------------------------------------------------------
+# Build variant: release (default) or debug
+# ---------------------------------------------------------------------------
+set(PRIVMX_BUILD_TYPE "release" CACHE STRING "Build variant: release or debug")
+
+if(PRIVMX_BUILD_TYPE STREQUAL "debug")
+    message(STATUS "Building asyncengine: DEBUG")
+    target_compile_options(asyncengine PUBLIC
+        -O0 -g
+        -pthread
+        -fexceptions
+        -DDEBUG
+    )
+else()
+    message(STATUS "Building asyncengine: RELEASE")
+    target_compile_options(asyncengine PUBLIC
+        -O3
+        -pthread
+        -fexceptions
+    )
+endif()
 
 target_link_options(asyncengine PUBLIC
     -L $ENV{SDK_DIR}/upstream/emscripten/cache/sysroot/lib

drivers/privmx-webendpoint-drv-crypto/CMakeLists.txt

@@ -11,11 +11,20 @@ add_library(privmxdrvcrypto ${SOURCES})
 target_include_directories(privmxdrvcrypto PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)
 set_target_properties(privmxdrvcrypto PROPERTIES PUBLIC_HEADER ${CMAKE_CURRENT_SOURCE_DIR}/include/privmx/drv/crypto.h)
 target_link_libraries(privmxdrvcrypto embind)
-target_compile_options(privmxdrvcrypto PUBLIC 
-    -O3
-    -pthread
-)
-set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+# ---------------------------------------------------------------------------
+# Build variant: release (default) or debug
+# ---------------------------------------------------------------------------
+set(PRIVMX_BUILD_TYPE "release" CACHE STRING "Build variant: release or debug")
+
+if(PRIVMX_BUILD_TYPE STREQUAL "debug")
+    message(STATUS "Building privmxdrvcrypto: DEBUG")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvcrypto PUBLIC -O0 -g -pthread -DDEBUG)
+else()
+    message(STATUS "Building privmxdrvcrypto: RELEASE")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvcrypto PUBLIC -O3 -pthread)
+endif()
 target_link_options(privmxdrvcrypto PUBLIC
     -sUSE_PTHREADS
     -sEXPORTED_RUNTIME_METHODS=['HEAPU8','ccall']

drivers/privmx-webendpoint-drv-ecc/CMakeLists.txt

@@ -12,11 +12,20 @@ target_include_directories(privmxdrvecc PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/incl
 set_target_properties(privmxdrvecc PROPERTIES PUBLIC_HEADER ${CMAKE_CURRENT_SOURCE_DIR}/include/privmx/drv/ecc.h)
 target_link_libraries(privmxdrvecc)
 target_link_libraries(privmxdrvecc embind)
-target_compile_options(privmxdrvecc PUBLIC 
-    -O3
-    -pthread
-)
-set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+# ---------------------------------------------------------------------------
+# Build variant: release (default) or debug
+# ---------------------------------------------------------------------------
+set(PRIVMX_BUILD_TYPE "release" CACHE STRING "Build variant: release or debug")
+
+if(PRIVMX_BUILD_TYPE STREQUAL "debug")
+    message(STATUS "Building privmxdrvecc: DEBUG")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvecc PUBLIC -O0 -g -pthread -DDEBUG)
+else()
+    message(STATUS "Building privmxdrvecc: RELEASE")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvecc PUBLIC -O3 -pthread)
+endif()
 target_link_options(privmxdrvecc PUBLIC
     -L $ENV{SDK_DIR}/upstream/emscripten/cache/sysroot/lib
     -sUSE_PTHREADS

drivers/privmx-webendpoint-drv-net/CMakeLists.txt

@@ -10,11 +10,20 @@ add_library(privmxdrvnet ${SOURCES})
 target_include_directories(privmxdrvnet PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)
 set_target_properties(privmxdrvnet PROPERTIES PUBLIC_HEADER ${CMAKE_CURRENT_SOURCE_DIR}/include/privmx/drv/net.h)
 target_link_libraries(privmxdrvnet PRIVATE embind)
-target_compile_options(privmxdrvnet PUBLIC 
-    -O3
-    -pthread
-)
-set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+# ---------------------------------------------------------------------------
+# Build variant: release (default) or debug
+# ---------------------------------------------------------------------------
+set(PRIVMX_BUILD_TYPE "release" CACHE STRING "Build variant: release or debug")
+
+if(PRIVMX_BUILD_TYPE STREQUAL "debug")
+    message(STATUS "Building privmxdrvnet: DEBUG")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvnet PUBLIC -O0 -g -pthread -DDEBUG)
+else()
+    message(STATUS "Building privmxdrvnet: RELEASE")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -fexceptions -pthread")
+    target_compile_options(privmxdrvnet PUBLIC -O3 -pthread)
+endif()
 target_link_options(privmxdrvnet PUBLIC
     -L $ENV{SDK_DIR}/upstream/emscripten/cache/sysroot/lib
     -sUSE_PTHREADS