Logs a message to users if callback has not been called within given time
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README.md

responsive-callback

Logs a message to users if callback has not been called within given time

Installation

npm install --save responsive-callback

Usage

Basically: responsiveCallback(options, callbackToMakeResponsive)

Example

const responsiveCallback = require('responsive-callback')
const needle = require('needle')

const onResponse = function(error, response) {
  console.log('Got HTTP response:')
  console.log(response.body)
}

const callback = responsiveCallback({
  message: 'Waiting for slow site to respond...'
}, onResponse)

needle.get('http://slow.site/', callback)

If slow.site takes more than 1500ms to respond, the Waiting for slow site to respond... message is logged to console. If the HTTP request responds before this, the message is never displayed.

Options

  • duration - Duration in milliseconds to wait before showing message (default: 1500)
  • message - A single message to display (default: Waiting...)
  • messages - An array of messages to display. If the user has waited for than duration, the first message in the array is displayed. After 2x duration, the second message is displayed, and so forth. Stops logging messages when it reachs the last message.
  • notifier - Function to call instead of logging with console.log. The function receives the message as the first argument. Note that when there are no more messages to log, the notifier won't be called anymore.
  • stream - If set to true (or a valid TTY-stream), will write to the stream and clear old messages

Browser usage

The NPM package ships with a UMD-bundle which works in browsers. You can load it from unpkg by referencing the umd-field: https://unpkg.com/responsive-callback?main=umd

It will be available under window.responsiveCallback or as an AMD module under responsive-callback.

License

MIT-licensed. See LICENSE.