在vue專案中讀取package.json資料

先在vue.config.js中加入plugin定義

module.exports = { 
  chainWebpack: config => {
    config.plugin("define").tap(definitions => {
      definitions[0]["process.env"]["PACKAGE_VERSION"] = JSON.stringify(
        require("./package.json").version,
      );
      return definitions;
    });
  },
};

讀取

let version = process.env.PACKAGE_VERSION;