code: function scopeExpression(expression) {
  	return expression.replace(expressionRE, (match, name) =>
  		(
  			name === undefined ||
  			name[0] === "$" ||
  			globals.indexOf(name) !== -1
  		) ?
  			match :
  			"data." + name
  	);
  }
docs: Scope an expression to use variables within the `data` object.
  
  @param {string} expression