CHANGELOG.md

 
+<a name="v3.17.0"></a>
+## [v3.17.0] - 2023-02-28
+### Add Features
+- new is- commands for transformer, not command
+
+
 <a name="v3.16.1"></a>
 ## [v3.16.1] - 2023-02-26
 ### Changes
@@ -338,6 +344,7 @@
 <a name="1.8.0"></a>
 ## 1.8.0 - 2021-08-15
 
+[v3.17.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.16.1...v3.17.0
 [v3.16.1]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.16.0...v3.16.1
 [v3.16.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.15.0...v3.16.0
 [v3.15.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.14.1...v3.15.0

application/package.json

 {
   "name": "@schukai/monster",
-  "version": "3.16.0",
+  "version": "3.16.1",
   "description": "Monster is a simple library for creating fast, robust and lightweight websites.",
   "keywords": [
     "framework",

application/source/data/transformer.mjs

@@ -17,6 +17,7 @@ import {
     validateObject,
     validatePrimitive,
     validateString,
+    validateBoolean,
 } from "../types/validate.mjs";
 import {clone} from "../util/clone.mjs";
 import {Pathfinder} from "./pathfinder.mjs";
@@ -186,6 +187,42 @@ function transform(value) {
             validateString(value);
             return value.toLowerCase();
 
+        case "isundefined":
+        case "is-undefined":
+            return value === undefined;
+
+        case "isnull":
+        case "is-null":
+            return value === null;
+
+        case "isset":
+        case "is-set":
+            return value !== undefined && value !== null;
+
+        case "isnumber":
+        case "is-number":
+            return isPrimitive(value) && !isNaN(value);
+
+        case "isinteger":
+        case "is-integer":
+            return isPrimitive(value) && !isNaN(value) && value % 1 === 0;
+
+        case "isfloat":
+        case "is-float":
+            return isPrimitive(value) && !isNaN(value) && value % 1 !== 0;
+
+        case "isobject":
+        case "is-object":
+            return isObject(value);
+
+        case "isarray":
+        case "is-array":
+            return Array.isArray(value);
+
+        case "not":
+            validateBoolean(value);
+            return !value;
+
         case "toupper":
         case "strtoupper":
         case "touppercase":

application/source/types/version.mjs

@@ -142,7 +142,7 @@ function getMonsterVersion() {
     }
 
     /** don't touch, replaced by make with package.json version */
-    monsterVersion = new Version("3.16.0");
+    monsterVersion = new Version("3.16.1");
 
     return monsterVersion;
 }

development/package.json

 {
   "name": "monster",
-  "version": "3.16.0",
+  "version": "3.16.1",
   "description": "monster",
   "repository": {
     "type": "git",

development/test/cases/data/transformer.mjs

@@ -24,9 +24,31 @@ describe('Transformer', function () {
 
     });
 
+
     describe('Transformer.run()', function () {
 
         [
+            ['isundefined', "a", false],
+            ['isundefined', null, false],
+            ['isundefined', undefined, true],
+            ['isnull', "a", false],
+            ['isnull', null, true],
+            ['isset', null, false],
+            ['isset', undefined, false],
+            ['isset', "", true],
+            ['isnumber', "a", false],
+            ['isnumber', 4, true],
+            ['isnumber', 4.5, true],
+            ['isinteger', 4.5, false],
+            ['isinteger', 4, true],
+            ['isfloat', 5.6, true],
+            ['isfloat', 5, false],
+            ['isobject', 4, false],
+            ['isobject', {}, true],
+            ['isarray', [{}], true],
+            ['isarray', "a", false],
+            ['not', true, false],
+            ['not', false, true],
             ['map:a=4:b=5:c=6', "a", "4"],
             ['date', "2023-02-14", "14.2.2023"],
             ['year', "2023-02-14", 2023],

development/test/cases/monster.mjs

@@ -7,7 +7,7 @@ describe('Monster', function () {
         let monsterVersion
 
         /** don´t touch, replaced by make with package.json version */
-        monsterVersion = new Version("3.16.0")
+        monsterVersion = new Version("3.16.1")
 
         let m = getMonsterVersion();
 

release.json

-{"version":"3.16.1"}
+{"version":"3.17.0"}