--- sidebar_position: 5 --- # Project Config The project config resides in the `wails.json` file in the project directory. The structure of the config is: ```json { "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to build the assets, run in the frontend directory - often `npm run build`]", "frontend:dev": "[This command has been replaced by frontend:dev:build.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.