add 'xs:numeric' to simpleTypes list

Author: pgfearo

src/functionData.ts

@@ -381,7 +381,13 @@ export class FunctionData {
 		"dateTimeStamp#1"
 	];
 
-	public static readonly simpleTypes = FunctionData.schema.map(t => 'xs:' + t.substring(0, t.length - 2));
+	private static unionSimpleTypes() {
+		const baseSimpleTypes = FunctionData.schema.map(t => 'xs:' + t.substring(0, t.length - 2));
+		baseSimpleTypes.push('xs:numeric');
+		return baseSimpleTypes;
+	}
+
+	public static readonly simpleTypes = FunctionData.unionSimpleTypes();
 
 	public static readonly namespaces = new Map([
 ["http://www.w3.org/2005/xpath-functions/array", XSLTnamespaces.Array],