lib/thematic.js
function(field) {
    if (this.vars.hasOwnProperty(field)) {
      if (!this.usage.hasOwnProperty(field)) {
        this.usage[field] = 0;
      }
      this.usage[field]++;
    }
  }
function(field) {
    if (this.vars.hasOwnProperty(field)) {
      if (!this.usage.hasOwnProperty(field)) {
        this.usage[field] = 0;
      }
      this.usage[field]++;
    }
  }
function ( field ) { if ( this . vars . hasOwnProperty ( field ) ) { if ( ! this . usage . hasOwnProperty ( field ) ) { this . usage [ field ] = 0 ; } this . usage [ field ] ++ ; } }
Tracks field names used within the source,
and keeps a running tally of their use count.
@param {String} name of field to report on.
Tracks field names used within the source and keeps a running tally of their use count .