stringify-error.js

> const err = new Error("oh no")
undefined
> err
Error: oh no
    at repl:1:13
    at Script.runInThisContext (vm.js:96:20)
    at REPLServer.defaultEval (repl.js:329:29)
    at bound (domain.js:396:14)
    at REPLServer.runBound [as eval] (domain.js:409:12)
    at REPLServer.onLine (repl.js:642:10)
    at REPLServer.emit (events.js:187:15)
    at REPLServer.EventEmitter.emit (domain.js:442:20)
    at REPLServer.Interface._onLine (readline.js:290:10)
    at REPLServer.Interface._line (readline.js:638:8)
> err.toString()
'Error: oh no'
> JSON.stringify(err)
'{}'
> err instanceof Object
true
> err instanceof Error
true
> const util = require("util")
undefined
> util.inspect(err)
'Error: oh no\n    at repl:1:13\n    at Script.runInThisContext (vm.js:96:20)\n    at REPLServer.defaultEval (repl.js:329:29)\n    at bound (domain.js:396:14)\n    at REPLServer.runBound [as eval] (domain.js:409:12)\n    at REPLServer.onLine (repl.js:642:10)\n    at REPLServer.emit (events.js:187:15)\n    at REPLServer.EventEmitter.emit (domain.js:442:20)\n    at REPLServer.Interface._onLine (readline.js:290:10)\n    at REPLServer.Interface._line (readline.js:638:8)'
> err.message
'oh no'
> err.stack
'Error: oh no\n    at repl:1:13\n    at Script.runInThisContext (vm.js:96:20)\n    at REPLServer.defaultEval (repl.js:329:29)\n    at bound (domain.js:396:14)\n    at REPLServer.runBound [as eval] (domain.js:409:12)\n    at REPLServer.onLine (repl.js:642:10)\n    at REPLServer.emit (events.js:187:15)\n    at REPLServer.EventEmitter.emit (domain.js:442:20)\n    at REPLServer.Interface._onLine (readline.js:290:10)\n    at REPLServer.Interface._line (readline.js:638:8)'