node判断.net 5的环境是否存在

结果（电脑中存在.net 5的环境）：

function judgeNETEnviroment(): Promise {
  let process = require('child_process');

  let cmd = 'dotnet --info';
  return new Promise((resolve, reject) => {
    process.exec(cmd, function (error: any, stdout: any, stderr: any) {
      if (error) {
        console.error(error);
        reject(error);
      }
      resolve(queryStr(stdout, 'Microsoft.NETCore.App 5.0'))
    });
  })
}


function queryStr(str1: string, str2: string): boolean {
  let reg = new RegExp(str2);

  return reg.test(str1);
}