mk-mobile-command/config/env.js

mk移动端脚手架

'use strict';

const fs = require('fs');
const path = require('path');
const paths = require('./paths');

delete require.cache[require.resolve('./paths')];

const NODE_ENV = process.env.NODE_ENV;
if (!NODE_ENV) {
    throw new Error(
        '必须指定NODE_ENV环境变量'
    );
}

//环境文件
var dotenvFiles = [
    `${paths.dotenv}.${NODE_ENV}.local`,
    `${paths.dotenv}.${NODE_ENV}`,
    paths.dotenv,
].filter(Boolean);

//将.env文件中的环境变量加载到 process.env
dotenvFiles.forEach(dotenvFile => {
    if (fs.existsSync(dotenvFile)) {
        require('dotenv-expand')(
            require('dotenv').config({
                path: dotenvFile,
            })
        );
    }
});

const appDirectory = fs.realpathSync(process.cwd());
process.env.NODE_PATH = (process.env.NODE_PATH || '')
    .split(path.delimiter)
    .filter(folder => folder && !path.isAbsolute(folder))
    .map(folder => path.resolve(appDirectory, folder))
    .join(path.delimiter);


function getClientEnvironment(publicUrl) {
    const raw = {
        NODE_ENV: process.env.NODE_ENV || 'development',
        PUBLIC_URL: publicUrl,
    }
    const stringified = {
        'process.env': Object.keys(raw).reduce((env, key) => {
            env[key] = JSON.stringify(raw[key]);
            return env;
        }, {}),
    };

    return { raw, stringified };
}

module.exports = getClientEnvironment;