๐Ÿ“ฆ CLI for setting up a Go WebAssembly frontend app

Overview

go-web-app cover

GitHub code size in bytes Go Report Card Codacy grade

Simple CLI for setting up Go WebAssembly frontend app.

What's included

  • ๐Ÿ› ๏ธ Dev Server with live reload
  • ๐Ÿ—œ๏ธ TinyGo for small WebAssembly output
  • โžก Git setup with files (such as README.md)
  • ๐Ÿฉน Glue files (index.html + wasm_exec.js)

Requirements

  • Go 1.12+
  • Browser that supports WebAssembly
  • lld (LLVM linker)

Install

go get github.com/talentlessguy/go-web-app

Then use as go-web-app.

CLI Reference

go-web-app init

Initialize a project in a picked directory.

Project tree

out.wasm is generated when building. Other files are automatically added.

โ”œโ”€โ”€ src
โ”‚   โ””โ”€โ”€ main.go
โ”œโ”€โ”€ build
โ”‚   โ””โ”€โ”€ out.wasm
โ”œโ”€โ”€ go.mod
โ”œโ”€โ”€ index.html
โ”œโ”€โ”€ README.md
โ””โ”€โ”€ wasm_exec.js

go-web-app dev --port

Builds the project on first run and launches a development server with specified port.

Default port is 8080.

After launching a server, you should go to http://localhost:

Every time you change a file in src dev server automatically compiles and updates the page.

go-web-app build

Compiles go code to WebAssembly. Compiled out.wasm file could be found in build folder.

Everything in src compiles to build, every go file.

After build, binary size is shown

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Comments
  • [Bug] go get github.com/talentlessguy/go-web-app fail to build

    [Bug] go get github.com/talentlessguy/go-web-app fail to build

    When doing go get github.com/talentlessguy/go-web-app it fails to build

    go get github.com/talentlessguy/go-web-app
    # github.com/talentlessguy/go-web-app
    github.com/talentlessguy/go-web-app/main.go:15:5: app.Author undefined (type *cli.App has no field or method Author)
    github.com/talentlessguy/go-web-app/main.go:20:15: cannot use []cli.Command literal (type []cli.Command) as type []*cli.Command in assignment
    github.com/talentlessguy/go-web-app/main.go:24:4: cannot use InitWebApp (type func(*cli.Context)) as type cli.ActionFunc in field value
    github.com/talentlessguy/go-web-app/main.go:29:4: cannot use CompileToWASMCLI (type func(*cli.Context)) as type cli.ActionFunc in field value
    github.com/talentlessguy/go-web-app/main.go:31:19: cannot use cli.StringFlag literal (type cli.StringFlag) as type cli.Flag in slice literal:
    	cli.StringFlag does not implement cli.Flag (Apply method has pointer receiver)
    github.com/talentlessguy/go-web-app/main.go:41:4: cannot use RunDevServer (type func(*cli.Context)) as type cli.ActionFunc in field value
    github.com/talentlessguy/go-web-app/main.go:43:19: cannot use cli.StringFlag literal (type cli.StringFlag) as type cli.Flag in slice literal:
    	cli.StringFlag does not implement cli.Flag (Apply method has pointer receiver)
    

    How to fix (optional)

    I think it has to do with the new versions of github.com/urfave/cli

    Go version

    go version go1.15.6 darwin/amd64

    go env

    GO111MODULE=""
    GOARCH="amd64"
    GOBIN=""
    GOCACHE="/Users/pedro/Library/Caches/go-build"
    GOENV="/Users/pedro/Library/Application Support/go/env"
    GOEXE=""
    GOFLAGS=""
    GOHOSTARCH="amd64"
    GOHOSTOS="darwin"
    GOINSECURE=""
    GOMODCACHE="/Users/pedro/go/pkg/mod"
    GONOPROXY=""
    GONOSUMDB=""
    GOOS="darwin"
    GOPATH="/Users/pedro/go"
    GOPRIVATE=""
    GOPROXY="https://proxy.golang.org,direct"
    GOROOT="/usr/local/Cellar/go/1.15.6/libexec"
    GOSUMDB="sum.golang.org"
    GOTMPDIR=""
    GOTOOLDIR="/usr/local/Cellar/go/1.15.6/libexec/pkg/tool/darwin_amd64"
    GCCGO="gccgo"
    AR="ar"
    CC="clang"
    CXX="clang++"
    CGO_ENABLED="1"
    GOMOD=""
    CGO_CFLAGS="-g -O2"
    CGO_CPPFLAGS=""
    CGO_CXXFLAGS="-g -O2"
    CGO_FFLAGS="-g -O2"
    CGO_LDFLAGS="-g -O2"
    PKG_CONFIG="pkg-config"
    GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/0y/xvz2rfcd1znf4myy_znggft00000gn/T/go-build070457126=/tmp/go-build -gno-record-gcc-switches -fno-common"
    
    bug 
    opened by pmilanez 2
  • Module path should be

    Module path should be "github.com/talentlessguy/go-web-app", not "create-go-web-app"

    Background

    Module path is inconsistent with go import path. GO111MODULE=on, run go get github.com/talentlessguy/go-web-app:

    go: downloading github.com/talentlessguy/go-web-app v0.0.0-20200622190614-48b1d7b20b5e
    go: github.com/talentlessguy/go-web-app upgrade => v0.0.0-20200622190614-48b1d7b20b5e
    go get: github.com/talentlessguy/[email protected]: parsing go.mod:
            module declares its path as: create-go-web-app
                    but was required as: github.com/talentlessguy/go-web-app 
    

    Solution

    Fix the module path:

    1. Rename the module path to "github.com/talentlessguy/go-web-app": https://github.com/mikezss/skl-go/blob/master/go.mod#L1
    module github.com/talentlessguy/go-web-app
    go 1.12
    require (
    	โ€ฆ
    ) 
    
    1. Warning the users not to use the module, get "github.com/talentlessguy/go-web-app" in GOPATH mode.
    bug 
    opened by KateGo520 2
  • [Bug] WebSockets only work on port 8080

    [Bug] WebSockets only work on port 8080

    The bug

    For now, index.html's script initiates WebSockets on ws://localhost:8080/reload but in theory it must be able to use any port. I guess it can be achieved with html/template, something like {{ .Port }}

    bug 
    opened by talentlessguy 0
  • Different ways of compiling Go

    Different ways of compiling Go

    Problem

    Due to some issues in TinyGo I can't only use it because it lacks syscall/js support for all the DOM. So we need both standard compiler and tinygo as options.

    Solution

    Add flags to gwa build

    gwa build --native
    

    Regular compiler will be used when native flag is passed. Also might use upx for compressing binaries.

    enhancement help wanted good first issue 
    opened by talentlessguy 3
Releases(v0.0.9)
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17 yo nerd / nightwalker
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