code: function(tickValue, index, ticks) {
  			// If we have lots of ticks, don't use the ones
  			var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
  
  			// If we have a number like 2.5 as the delta, figure out how many decimal places we need
  			if (Math.abs(delta) > 1) {
  				if (tickValue !== Math.floor(tickValue)) {
  					// not an integer
  					delta = tickValue - Math.floor(tickValue);
  				}
  			}
  
  			var logDelta = helpers$1.log10(Math.abs(delta));
  			var tickString = '';
  
  			if (tickValue !== 0) {
  				var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
  				if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
  					var logTick = helpers$1.log10(Math.abs(tickValue));
  					tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta));
  				} else {
  					var numDecimal = -1 * Math.floor(logDelta);
  					numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
  					tickString = tickValue.toFixed(numDecimal);
  				}
  			} else {
  				tickString = '0'; // never show decimal places for 0
  			}
  
  			return tickString;
  		}
docs: Formatter for linear numeric ticks
  @method Chart.Ticks.formatters.linear
  @param tickValue {number} the value to be formatted
  @param index {number} the position of the tickValue parameter in the ticks array
  @param ticks {number[]} the list of ticks being converted
  @return {string} string representation of the tickValue parameter