Flatry

Flatry (flat try) converting promise or function to flat array response like [err, result].

Inspired by golang style error handling without try/catch.

 

Install

npm install flatry
# or
yarn add flatry

 

Use

import flatry from 'flatry';
// or
const flatry = require('flatry');

 

Examples

Asynchronous (async/await)

Before:

async asyncData({ app, error }) {
  try {
    const categories = (await app.$axios.$get('forum')).sections;
    return { categories };
  } catch (err) {
    return error({ statusCode: err.statusCode });
  }
}

After:

async asyncData({ app, error }) {
  const [err, res] = await flatry(app.$axios.$get('forum'));
  if (err) return error({ statusCode: err.statusCode });
  return { categories: res.sections };
}

Synchronous

Before:

function throwErrorIn10percent() {
  if (Math.random() > 0.9) throw new Error('Random error');
  return true;
}

let result = false;
try {
    result = throwErrorIn10percent()
} catch (error) {
    console.log('Error catched', error)
}
console.log('result', result);

After:

function throwErrorIn10percent() {
  if (Math.random() > 0.9) throw new Error('Random error');
  return true;
}

const [err, result] = flatry(throwErrorIn10percent);
if (err) console.log('Error catched', err)
console.log('result', result);