add $ sign as a namedPlaceholder (for data model syntax)

Author: datbth

dist/sql-formatter.js

@@ -1688,7 +1688,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	                openParens: ["("],
 	                closeParens: [")"],
 	                indexedPlaceholderTypes: ["?"],
-	                namedPlaceholderTypes: ["@", ":"],
+	                namedPlaceholderTypes: ["@", ":", "$"],
 	                lineCommentTypes: ["#", "--"]
 	            });
 	        }
@@ -2409,10 +2409,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 	 */
 	function isIndex(value, length) {
+	  var type = typeof value;
 	  length = length == null ? MAX_SAFE_INTEGER : length;
+
 	  return !!length &&
-	    (typeof value == 'number' || reIsUint.test(value)) &&
-	    (value > -1 && value % 1 == 0 && value < length);
+	    (type == 'number' ||
+	      (type != 'symbol' && reIsUint.test(value))) &&
+	        (value > -1 && value % 1 == 0 && value < length);
 	}
 
 	module.exports = isIndex;
@@ -2513,6 +2516,14 @@ return /******/ (function(modules) { // webpackBootstrap
 	/** Used to access faster Node.js helpers. */
 	var nodeUtil = (function() {
 	  try {
+	    // Use `util.types` for Node.js 10+.
+	    var types = freeModule && freeModule.require && freeModule.require('util').types;
+
+	    if (types) {
+	      return types;
+	    }
+
+	    // Legacy `process.binding('util')` for Node.js < 10.
 	    return freeProcess && freeProcess.binding && freeProcess.binding('util');
 	  } catch (e) {}
 	}());

dist/sql-formatter.min.js

@@ -52,7 +52,7 @@ var StandardSqlFormatter = function () {
                 openParens: ["("],
                 closeParens: [")"],
                 indexedPlaceholderTypes: ["?"],
-                namedPlaceholderTypes: ["@", ":"],
+                namedPlaceholderTypes: ["@", ":", "$"],
                 lineCommentTypes: ["#", "--"]
             });
         }