diagnose

Async and simple diagnostics system.

Write function that report diagnostics, then run them concurrently.

// Prepare checks
var checks = [
  function(check, async) {
    var done = async();
    fs.stat('somefile.json', function(err, stat) {
      if (err) check.fail('This check failed!');
      else check.pass('Everything in this check passed.');
      done();
    });
  },

  function(check) {
    check.warn('Boo!');
  }
];

// Run checks
diagnose(checks, function(err, diagnosis) {
  if (err) throw err;
  console.log(diagnosis.results);
});

Get an output of reports:

[ { type: 'warn', message: 'Boo!' },
  { type: 'fail', message: 'This check failed!' } ]

Installation

$ npm install --save-dev diagnose

API

diagnose(check, callback)

Run diagnostic check functions and get the results.

• check (Function|Array): Function(s) to write diagnostic reports.
• callback (Function): Node-style callback with the final diagnosis.

check(diagnosis, async) (put in diagnose)

A diagnostic check function that reports to a Diagnosis object.

• diagnosis (Diagnosis): Object used to write diagnostic reports.
• async (Function): Call to enable async, returns the function to finish the check.

new Diagnosis(opts)

A diagnosis object you can write reports to.

• opts (Object): Options for the diagnosis.
• opts.results (Array): Alternative array reports are written to.

Diagnosis#report(data)

Write a report the object.

• data (Object): Information for your report.

Diagnosis#pass(message)

Diagnosis#fail(message)

Diagnosis#warn(message)

Shortcut methods for writing pass/fail/warn reports.

• message (String): Message for the report.

Credits

| | |:---:| | Jamen Marzonie |