Output control for util.inspect / console.error ?

[ferm10n]

I see that the toJSON is deliberately used for the Symbol.for('nodejs.util.inspect.custom') custom formatter. This doesn't feel very conducive to clear and concise error messages. Take the following for example and its output:

const ono = require("ono");

const onoError = ono({ foo: 'bar' }, 'Test Error');
console.log(onoError);

const ogError = new Error('Test Error');
ogError.foo = 'bar';
console.log(ogError);

{
  stack: 'Error: Test Error\n' +
    '    at Object.<anonymous> (/home/jsanders/ferm10n/dweb-mirror/demo.js:4:18)\n' +
    '    at Module._compile (internal/modules/cjs/loader.js:1138:30)\n' +
    '    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)\n' +
    '    at Module.load (internal/modules/cjs/loader.js:986:32)\n' +
    '    at Function.Module._load (internal/modules/cjs/loader.js:879:14)\n' +
    '    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)\n' +
    '    at internal/main/run_main_module.js:17:47',
  message: 'Test Error',
  toJSON: [Function: toJSON],
  foo: 'bar',
  name: 'Error',
  toString: [Function: toString]
}
Error: Test Error
    at Object.<anonymous> (/home/jsanders/ferm10n/dweb-mirror/demo.js:7:17)
    at Module._compile (internal/modules/cjs/loader.js:1138:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
    at Module.load (internal/modules/cjs/loader.js:986:32)
    at Function.Module._load (internal/modules/cjs/loader.js:879:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
    at internal/main/run_main_module.js:17:47 {
  foo: 'bar'
}

Same information is conveyed, but the ono error is a lot more verbose. Is there a reason why toJSON was used for the inspect method? Would it make sense to only have toJSON only present enumerable properties, like how JSON.stringify serializes objects?