Provide a constant list definition for the most common use case (http, file extension, ...).

Example

const EXTENSION = require('constant-list').EXTENSION;

function isJavascriptFile(filename) {
  return (filename.indexOf(EXTENSION.JS) != -1);
}

const JS = require('constant-list').JS;

if(typeof true == JS.BOOLEAN) {
  console.log('is boolean');
}

const HTTP = require('constant-list').HTTP;
console.log(`page not found ${HTTP.NOT_FOUND}`)