Project Config

The project config resides in the wails.json file in the project directory. The structure of the config is:

{
    "name": "[The project name]",
    "assetdir": "[Relative path to the directory containing the compiled assets, this is normally inferred and could be left empty]",
    "reloaddirs": "[Additional directories to trigger reloads (comma separated), this is only used for some advanced asset configurations]",
    "frontend:install": "[The command to install node dependencies, run in the frontend directory - often `npm install`]",
    "frontend:build": "[The command to build the assets, run in the frontend directory - often `npm run build`]",
    "frontend:dev": "[This command has been replaced by frontend:dev:build. If frontend:dev:build is not specified will falls back to this command. If this command is also not specified will falls back to frontend:build]",
    "frontend:dev:build": "[This command is the dev equivalent of frontend:build. If not specified falls back to frontend:dev]",
    "frontend:dev:install": "[This command is the dev equivalent of frontend:install. If not specified falls back to frontend:install]",
    "frontend:dev:watcher": "[This command is run in a separate process on `wails dev`. Useful for 3rd party watchers or starting 3d party dev servers]",
    "frontend:dev:serverUrl": "[URL to a 3rd party dev server to be used to serve assets, EG Vite. If this is set to 'auto' then the devServerUrl will be inferred from the Vite output]",
    "wailsjsdir": "[Relative path to the directory that the auto-generated JS modules will be created]",
    "version": "[Project config version]",
    "outputfilename": "[The name of the binary]",
    "debounceMS": 100, // The default time the dev server waits to reload when it detects a change in assets
    "devServer": "[Address to bind the wails dev sever to. Default: localhost:34115]",
    "appargs": "[Arguments passed to the application in shell style when in dev mode]",
    "runNonNativeBuildHooks": false, // Defines if build hooks should be run though they are defined for an OS other than the host OS.
    "preBuildHooks": {
        "GOOS/GOARCH": "[The command that will be executed before a build of the specified GOOS/GOARCH: ${platform} is replaced with the "GOOS/GOARCH". The "GOOS/GOARCH" hook is executed before the "GOOS/*" and "*/*" hook.]",
        "GOOS/*": "[The command that will be executed before a build of the specified GOOS: ${platform} is replaced with the "GOOS/GOARCH". The "GOOS/*" hook is executed before the "*/*" hook.]",
        "*/*": "[The command that will be executed before every build: ${platform} is replaced with the "GOOS/GOARCH".]"
    },
    "postBuildHooks": {
        "GOOS/GOARCH": "[The command that will be executed after a build of the specified GOOS/GOARCH: ${platform} is replaced with the "GOOS/GOARCH" and ${bin} with the path to the compiled binary. The "GOOS/GOARCH" hook is executed before the "GOOS/*" and "*/*" hook.]",
        "GOOS/*": "[The command that will be executed after a build of the specified GOOS: ${platform} is replaced with the "GOOS/GOARCH" and ${bin} with the path to the compiled binary. The "GOOS/*" hook is executed before the "*/*" hook.]",
        "*/*": "[The command that will be executed after every build: ${platform} is replaced with the "GOOS/GOARCH" and ${bin} with the path to the compiled binary.]"
    },
    "info": { // Data used to populate manifests and version info.
        "companyName": "[The company name. Default: [The project name]]",
        "productName": "[The product name. Default: [The project name]]",
        "productVersion": "[The version of the product. Default: '1.0.0']",
        "copyright": "[The copyright of the product. Default: 'Copyright.........']",
        "comments": "[A short comment of the app. Default: 'Built using Wails (https://wails.app)']"
    },
    "nsisType": "['multiple': One installer per architecture. 'single': Single universal installer for all architectures being built. Default: 'multiple']"
}

This file is read by the Wails CLI when running wails build or wails dev.

The assetdir, reloaddirs, wailsjsdir, debounceMS, devserver and frontenddevserverurl flags in wails build/dev will update the project config and thus become defaults for subsequent runs.