CHANGELOG.md

 
+<a name="v3.14.0"></a>
+## [v3.14.0] - 2023-02-21
+### Add Features
+- new transformer function concat
+
+
 <a name="v3.13.1"></a>
 ## [v3.13.1] - 2023-02-18
 ### Bug Fixes
@@ -304,6 +310,7 @@
 <a name="1.8.0"></a>
 ## 1.8.0 - 2021-08-15
 
+[v3.14.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.13.1...v3.14.0
 [v3.13.1]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.13.0...v3.13.1
 [v3.13.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.12.2...v3.13.0
 [v3.12.2]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.12.1...v3.12.2

application/package.json

 {
   "name": "@schukai/monster",
-  "version": "3.13.0",
+  "version": "3.13.1",
   "description": "Monster is a simple library for creating fast, robust and lightweight websites.",
   "keywords": [
     "framework",

application/source/data/datasource.mjs

@@ -53,6 +53,7 @@ class Datasource extends Base {
      */
     constructor() {
         super();
+
         this[internalSymbol] = new ProxyObserver({
             options: extend({}, this.defaults),
         });

application/source/data/datasource/server/restapi.mjs

@@ -169,6 +169,13 @@ class RestAPI extends Server {
     }
 }
 
+/**
+ * @private
+ * @param init
+ * @param key
+ * @param callback
+ * @returns {Promise<string>}
+ */
 function fetchData(init, key, callback) {
     const self = this;
     let response;

application/source/data/transformer.mjs

@@ -8,7 +8,7 @@
 import {Base} from "../types/base.mjs";
 import {getGlobal, getGlobalObject} from "../types/global.mjs";
 import {ID} from "../types/id.mjs";
-import {isArray, isObject, isString} from "../types/is.mjs";
+import {isArray, isObject, isString, isPrimitive} from "../types/is.mjs";
 import {getDocumentTranslations, Translations} from "../i18n/translations.mjs";
 import {
     validateFunction,
@@ -397,6 +397,28 @@ function transform(value) {
 
             return new Pathfinder(value).exists(key);
 
+        case "concat":
+            let pf2 = new Pathfinder(value);
+            let concat = "";
+            while (args.length > 0) {
+                key = args.shift();
+                if (key === undefined) {
+                    throw new Error("missing key parameter");
+                }
+                
+                if (!pf2.exists(key)) {
+                    concat += key;
+                    continue;
+                }
+                let v = pf2.getVia(key);
+                if(!isPrimitive(v)) {
+                    throw new Error("value is not primitive");
+                }
+
+                concat += v;
+            }
+            
+            return concat;
         case "path":
             key = args.shift();
             if (key === undefined) {

application/source/types/version.mjs

@@ -142,7 +142,7 @@ function getMonsterVersion() {
     }
 
     /** don't touch, replaced by make with package.json version */
-    monsterVersion = new Version("3.13.0");
+    monsterVersion = new Version("3.13.1");
 
     return monsterVersion;
 }

development/package.json

 {
   "name": "monster",
-  "version": "3.13.0",
+  "version": "3.13.1",
   "description": "monster",
   "repository": {
     "type": "git",
@@ -32,12 +32,12 @@
     "create-polyfill-service-url": "^2.2.6",
     "crypt": "^0.0.2",
     "cssnano": "^5.1.15",
-    "esbuild": "^0.17.8",
+    "esbuild": "^0.17.10",
     "flow-bin": "^0.200.0",
     "fs": "0.0.1-security",
     "glob": "^8.1.0",
     "graphviz": "^0.0.9",
-    "jsdoc": "^4.0.1",
+    "jsdoc": "^4.0.2",
     "jsdoc-external-example": "github:volker-schukai/jsdoc-external-example",
     "jsdoc-plantuml": "^1.0.2",
     "jsdom": "^21.1.0",
@@ -50,7 +50,7 @@
     "postcss-import": "^15.1.0",
     "postcss-load-config": "^4.0.1",
     "postcss-mixins": "^9.0.4",
-    "postcss-nested": "^6.0.0",
+    "postcss-nested": "^6.0.1",
     "postcss-nesting": "^11.2.1",
     "postcss-normalize": "^10.0.1",
     "postcss-responsive-type": "^1.0.0",
@@ -61,11 +61,11 @@
     "url": "^0.11.0",
     "url-exist": "3.0.1",
     "util": "^0.12.5",
-    "vite": "^4.1.2",
+    "vite": "^4.1.3",
     "vite-plugin-banner": "^0.7.0",
     "vite-plugin-list-directory-contents": "^1.4.5",
     "vite-plugin-minify": "^1.5.2",
-    "vite-plugin-mkcert": "^1.13.1",
+    "vite-plugin-mkcert": "^1.13.2",
     "ws": "^8.12.1"
   }
 }

development/test/cases/data/transformer.mjs

@@ -27,6 +27,7 @@ describe('Transformer', function () {
     describe('Transformer.run()', function () {
 
         [
+            ['concat:a.b.c:test:a.b.d', {a: {b: {c: 4, d: 6}}}, "4test6"],
             ['??:a', null, 'a'],
             ['??:a', undefined, 'a'],
             ['??:a', 'true', 'true'],

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("3.13.0")
+        monsterVersion = new Version("3.13.1")
 
         let m = getMonsterVersion();
 

release.json

-{"version":"3.13.1"}
+{"version":"3.14.0"}