我如何排除JSON.parse没有对象的错误？ [重复]

Question

 console.log(JSON.parse(buffer.toString()))

这是输出错误

      else throw err
           ^

SyntaxError: Unexpected token a in JSON at position 0
    at JSON.parse (<anonymous>)
    at Object.handler (C:UserscatprogrammerDesktop
ode.js
otes-appapp.js:36:26)
    at Object.runCommand (C:UserscatprogrammerDesktop
ode.js
otes-app
ode_modulesyargslibcommand.js:240:40)
    at Object.parseArgs [as _parseArgs] (C:UserscatprogrammerDesktop
ode.js
otes-app
ode_modulesyargsyargs.js:1107:41)
    at Object.parse (C:UserscatprogrammerDesktop
ode.js
otes-app
ode_modulesyargsyargs.js:566:25)
    at Object.<anonymous> (C:UserscatprogrammerDesktop
ode.js
otes-appapp.js:85:7)
    at Module._compile (internal/modules/cjs/loader.js:959:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
    at Module.load (internal/modules/cjs/loader.js:815:32)
    at Function.Module._load (internal/modules/cjs/loader.js:727:14)

如何排除JSON错误。例如，使用if(){}条件检查错误。我需要程序不会因该错误而停止。我该怎么办？我想这样：

if(JSON.parse('hello there!'){
    console.log('This is impossible!!')
}else{
    console.log('Parsing to object...')
}