.env在mode文件中如何添加注释详解_vue.js_

NODE_ENV='production' VUE_APP_PATH='./' VUE_APP_RUNTIME='prod' 

const dotenv = require('dotenv'); // ... loadEnv (mode) { const logger = debug('vue:env') const basePath = path.resolve(this.context, `.env${mode ? `.${mode}` : ``}`) const localPath = `${basePath}.local` const load = envPath => { try { const env = dotenv.config({ path: envPath, debug: process.env.DEBUG }) dotenvExpand(env) logger(envPath, env) } catch (err) { // only ignore error if file is not found if (err.toString().indexOf('ENOENT') < 0) { error(err) } } } load(localPath) load(basePath) // by default, NODE_ENV and BABEL_ENV are set to "development" unless mode // is production or test. However the value in .env files will take higher // priority. if (mode) { // always set NODE_ENV during tests // as that is necessary for tests to not be affected by each other const shouldForceDefaultEnv = ( process.env.VUE_CLI_TEST && !process.env.VUE_CLI_TEST_TESTING_ENV ) const defaultNodeEnv = (mode === 'production' || mode === 'test') ? mode : 'development' if (shouldForceDefaultEnv || process.env.NODE_ENV == null) { process.env.NODE_ENV = defaultNodeEnv } if (shouldForceDefaultEnv || process.env.BABEL_ENV == null) { process.env.BABEL_ENV = defaultNodeEnv } } } 

NODE_ENV='production' # VUE_APP_PATH='/pc/' VUE_APP_PATH='./' VUE_APP_RUNTIME='prod' 

"scripts": { "build": "vue-cli-service build --mode prod", },