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Node.js Process

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process模块和process.env环境变量

vscode debug

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{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "node",
            "request": "launch",
            "name": "Launch Program",
            "program": "${workspaceFolder}\\server.js",
            "args": ["--trace-sync-io"],
            "env":{
                "NODE_ENV":"production",
                "PORT":"3001"
            }
        }
    ]
}

关于设置环境变量 Node及Express入门

node.js 程序调用命令行

exec方式

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var exec = require("child_process").exec;
var LangLocale = {
    fr: 'fr_FR',
    fr_FR: 'fr-FR',
    zh_CN: 'zh-CN',
    zh_TW: 'zh-TW',
    en: 'en_US',
    en_US: 'en_US',
    ja: 'ja_JP',
    es: 'es_ES',
    de: 'de_DE',
    da: 'da_DK',
}
var langs = Object.values(LangLocale)

function runCMD(cmd) {
    return new Promise((resolve, reject) => {
        exec(`yarn extract src/locales/${cmd}.json `, {
            maxBuffer: 1024 * 2000
        }, function (err, stdout, stderr) {
            if (err) {
                console.log(err);
                reject(err);
            } else if (stderr.lenght > 0) {
                reject(new Error(stderr.toString()));
            } else {
                console.log(stdout);
                resolve();
            }
        });
    })
}
langs.forEach(async (lang) => {
    await runCMD(lang)
})