now-flow/src/providers/sh/util/error.js

Add deployment workflows to Zeit now

// Packages
const ms = require('ms')
const chalk = require('chalk')

// Utilities
const error = require('../../../util/output/error')
const info = require('../../../util/output/info')

function handleError(err, { debug = false } = {}) {
	// Coerce Strings to Error instances
	if (typeof err === 'string') {
		err = new Error(err)
	}

	if (debug) {
		console.log(`> [debug] handling error: ${err.stack}`)
	}

	if (err.status === 403) {
		console.error(error(
			'Authentication error. Run `now login` to log-in again.'
		))
	} else if (err.status === 429) {
		if (err.retryAfter === 'never') {
			console.error(error(err.message))
		} else if (err.retryAfter === null) {
			console.error(error('Rate limit exceeded error. Please try later.'))
		} else {
			console.error(error(
				'Rate limit exceeded error. Try again in ' +
          ms(err.retryAfter * 1000, { long: true }) +
          ', or upgrade your account by running ' +
          `${chalk.gray('`')}${chalk.cyan('now upgrade')}${chalk.gray('`')}`
			))
		}
	} else if (err.userError) {
		console.error(error(err.message))
	} else if (err.status === 500) {
		console.error(error('Unexpected server error. Please retry.'))
	} else if (err.code === 'USER_ABORT') {
		info('Aborted')
	} else {
		console.error(error(`Unexpected error. Please try again later. (${err.message})`))
	}
}

async function responseError(res) {
	let message
	let userError

	if (res.status >= 400 && res.status < 500) {
		let body

		try {
			body = await res.json()
		} catch (err) {
			body = {}
		}

		// Some APIs wrongly return `err` instead of `error`
		message = (body.error || body.err || {}).message
		userError = true
	} else {
		userError = false
	}

	const err = new Error(message || 'Response error')
	err.status = res.status
	err.userError = userError

	if (res.status === 429) {
		const retryAfter = res.headers.get('Retry-After')

		if (retryAfter) {
			err.retryAfter = parseInt(retryAfter, 10)
		}
	}

	return err
}

module.exports = {
	handleError,
	responseError,
	error
}