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- Go 66.2%
- JavaScript 11.9%
- HTML 10.5%
- Objective-C 4.2%
- NSIS 1.8%
- Other 5.4%
a06d55804c* perf(v3): optimize JSON processing and reduce allocations in hot paths - Switch to goccy/go-json for method binding, events, and HTTP transport (21-63% faster, 40-60% less memory for method calls) - Optimize BoundMethod struct layout to reduce padding (144 -> 136 bytes) - Cache isVariadic flag at registration to avoid reflect call per invocation - Use stack-allocated buffer for method arguments (<=8 args) - Optimize result collection to avoid slice allocation for single return values - Use sync.Map for MIME cache to improve concurrent read performance - Use buffer pool for HTTP transport request body reading - Lazily allocate CloseNotify channel in content type sniffer - Remove debug CSS logging from asset server - Add comprehensive benchmark tests (build tag: bench) Performance improvements for BoundMethod.Call: - SimpleCall: 1290ns -> 930ns (28% faster), 240B -> 80B (67% less memory) - ComplexCall: 10500ns -> 3900ns (63% faster), 1192B -> 1020B (14% less) - VariadicCall: 3460ns -> 1600ns (54% faster), 512B -> 289B (44% less) * perf(v3): add max size limit to buffer pool to prevent memory bloat Buffers larger than 512KB are not returned to the pool, allowing GC to reclaim memory after large requests (e.g., base64 encoded images). * perf(v3): remove mimetype library dependency, saving ~208KB binary size - Replace github.com/wailsapp/mimetype with expanded extension map + stdlib - Expand MIME type map from 16 to 50+ common web formats (fonts, audio, video, etc.) - Add comprehensive test suite validating MIME detection for all web formats - Use http.DetectContentType as fallback for unknown extensions - Actual binary size reduction: 1.2MB (11MB -> 9.8MB in test app) * perf(v3): migrate all runtime code to goccy/go-json Migrate remaining encoding/json usages to goccy/go-json in: - pkg/application (android, darwin, ios, single_instance, webview_window) - pkg/services (kvstore, notifications on all platforms) - internal/assetserver/webview (request/response handling) - internal/runtime and internal/capabilities Note: encoding/json (110KB) remains in binary because: 1. goccy/go-json imports it for interface compatibility (json.Marshaler, etc.) 2. log/slog (stdlib) uses it for JSON output The performance benefit is in the hot paths which now use the faster library. * perf(v3): replace gopkg.in/ini.v1 with minimal .desktop file parser Replace the gopkg.in/ini.v1 dependency with a purpose-built minimal parser for Linux .desktop files. The new parser: - Only extracts the Exec key from [Desktop Entry] section (all we need) - Follows the Desktop Entry Specification - Has comprehensive test coverage (40 tests) including: - All major file managers (Nautilus, Dolphin, Thunar, PCManFM, Caja, Nemo) - Edge cases (UTF-8, special chars, comments, empty files, etc.) - Buffer limit handling Binary size reduction: 45KB (10.22MB -> 10.18MB) * perf(v3): remove samber/lo from runtime code, saving ~310KB binary size Replace samber/lo with Go 1.21+ stdlib slices package and minimal internal helpers in all runtime code paths. This removes 80 transitive dependencies from the production binary. Changes: - Create internal/sliceutil package with Unique and FindMapKey helpers - Replace lo.Without with slices.DeleteFunc in event handling - Replace lo.Ternary with inline if/else in Windows code - Replace lo.Uniq with sliceutil.Unique for feature flags - Replace lo.FindKey with sliceutil.FindMapKey for method aliases - Replace lo.Filter with slices.DeleteFunc in event listeners - Replace lo.Must with inline panic in w32 package Binary size: 10.18MB -> 9.87MB (~310KB / 3% reduction) Note: CLI tools still use samber/lo since they don't affect production binary size. The application_debug.go file also retains lo usage as it has //go:build !production tag. * fix: address CodeRabbit review comments - Use application/x-typescript MIME type (not IANA-registered text/typescript) - Fix potential panic in mimetype_stdlib_test.go for short MIME strings - Use cached isVariadic flag in bindings_optimized_bench_test.go * fix: initialize goccy/go-json decoder early to fix Windows test failure On Windows, goccy/go-json's type address calculation can fail if the decoder is first invoked during test execution rather than at init time. Force early initialization by unmarshaling a []int during package init. See: https://github.com/goccy/go-json/issues/474 * 📝 Add docstrings to `v3/performance-improvements` (#4844) * fix: initialize goccy/go-json decoder early to fix Windows test failure On Windows, goccy/go-json's type address calculation can fail if the decoder is first invoked during test execution rather than at init time. Force early initialization by unmarshaling a []int during package init. See: https://github.com/goccy/go-json/issues/474 * 📝 Add docstrings to `v3/performance-improvements` Docstrings generation was requested by @leaanthony. * https://github.com/wailsapp/wails/pull/4843#issuecomment-3703472562 The following files were modified: * `v3/internal/assetserver/common.go` * `v3/internal/assetserver/content_type_sniffer.go` * `v3/internal/assetserver/mimecache.go` * `v3/internal/fileexplorer/desktopfile.go` * `v3/internal/fileexplorer/fileexplorer_linux.go` * `v3/internal/sliceutil/sliceutil.go` * `v3/pkg/application/application_ios.go` * `v3/pkg/application/bindings.go` * `v3/pkg/application/ios_runtime_ios.go` * `v3/pkg/w32/window.go` --------- Co-authored-by: Lea Anthony <lea.anthony@gmail.com> Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> --------- Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> |
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Build desktop applications using Go & Web Technologies.
Table of Contents
- Table of Contents
- Introduction
- Features
- Getting Started
- Sponsors
- FAQ
- Stargazers over time
- Contributors
- License
- Inspiration
Introduction
The traditional method of providing web interfaces to Go programs is via a built-in web server. Wails offers a different approach: it provides the ability to wrap both Go code and a web frontend into a single binary. Tools are provided to make this easy for you by handling project creation, compilation and bundling. All you have to do is get creative!
Features
- Use standard Go for the backend
- Use any frontend technology you are already familiar with to build your UI
- Quickly create rich frontends for your Go programs using pre-built templates
- Easily call Go methods from Javascript
- Auto-generated Typescript definitions for your Go structs and methods
- Native Dialogs & Menus
- Native Dark / Light mode support
- Supports modern translucency and "frosted window" effects
- Unified eventing system between Go and Javascript
- Powerful cli tool to quickly generate and build your projects
- Multiplatform
- Uses native rendering engines - no embedded browser!
Roadmap
The project roadmap may be found here. Please consult it before creating an enhancement request.
Getting Started
The installation instructions are on the official website.
Sponsors
This project is supported by these kind people / companies:
FAQ
-
Is this an alternative to Electron?
Depends on your requirements. It's designed to make it easy for Go programmers to make lightweight desktop applications or add a frontend to their existing applications. Wails does offer native elements such as menus and dialogs, so it could be considered a lightweight electron alternative.
-
Who is this project aimed at?
Go programmers who want to bundle an HTML/JS/CSS frontend with their applications, without resorting to creating a server and opening a browser to view it.
-
What's with the name?
When I saw WebView, I thought "What I really want is tooling around building a WebView app, a bit like Rails is to Ruby". So initially it was a play on words (Webview on Rails). It just so happened to also be a homophone of the English name for the Country I am from. So it stuck.
Stargazers over time
Contributors
The contributors list is getting too big for the readme! All the amazing people who have contributed to this project have their own page here.
License
Inspiration
This project was mainly coded to the following albums:
- Manic Street Preachers - Resistance Is Futile
- Manic Street Preachers - This Is My Truth, Tell Me Yours
- The Midnight - Endless Summer
- Gary Newman - Savage (Songs from a Broken World)
- Steve Vai - Passion & Warfare
- Ben Howard - Every Kingdom
- Ben Howard - Noonday Dream
- Adwaith - Melyn
- Gwidaith Hen Fran - Cedors Hen Wrach
- Metallica - Metallica
- Bloc Party - Silent Alarm
- Maxthor - Another World
- Alun Tan Lan - Y Distawrwydd