Handlebars logging - tips for debugging templates!

gistfile1.js

  /*
   * Use this to turn on logging: (in your local extensions file)
   */
  Handlebars.logger.log = function(level) {
    if(level >= Handlebars.logger.level) {
      console.log.apply(console, [].concat(["Handlebars: "], _.toArray(arguments)));
    }
  };
  // DEBUG: 0, INFO: 1, WARN: 2, ERROR: 3, 
  Handlebars.registerHelper('log', Handlebars.logger.log);
  // Std level is 3, when set to 0, handlebars will log all compilation results
  Handlebars.logger.level = 3; 

  /* 
   * Log can also be used in templates: '{{log 0 this "myString" accountName}}'
   * Logs all the passed data when logger.level = 0
   */

Thanks a bunch for this

Been looking for something like this & happened to come across this gist, thanks for sharing. Still pretty relevant now

Thank you so much

Thanks from 2021, it works still )

hmm i get "cannot read properties of undefined (reading 'log')" on Handlebars.logger.log

looks like i was missing

Handlerbars.logger = {
    methodMap: { 0: 'debug', 1: 'info', 2: 'warn', 3: 'error' },

    // State enum
    DEBUG: 0,
    INFO: 1,
    WARN: 2,
    ERROR: 3,
};