feat(mapperconfig): allow for backwards compitability in mapper configs

Author: Per Kristian Kummermo

src/DataMapperChain.spec.ts

@@ -103,6 +103,19 @@ describe("Data mapper chain", () => {
         p2: "2",
       });
     });
+
+    it("should be able to deserialize old mapper configs", () => {
+      const serializedConfig = `{"name":"Test","mappers":[{"ident":"MOCK","params":{"p1":1,"p2":"2"}}]}`;
+
+      dataMapperChain.loadConfig(serializedConfig);
+
+      expect(dataMapperChain.name).toBe("Test");
+      expect(dataMapperChain.mappers.length).toBe(1);
+      expect((dataMapperChain.mappers[0] as MapperMock).initParams).toEqual({
+        p1: 1,
+        p2: "2",
+      });
+    });
   });
 
   describe("Mapper configuration", () => {

src/DataMapperChain.ts

@@ -78,7 +78,15 @@ export class DataMapperChain {
   loadConfig(configString: string): DataMapperChain {
     const parsedConfig = JSON.parse(configString);
     this.name = parsedConfig.name;
-    const mapperConfigs: IMapperConfig[] = parsedConfig.mappers;
+    let mapperConfigs: IMapperConfig[] = [];
+
+    mapperConfigs = parsedConfig.mappers.map((mapper: IMapperConfig) => {
+      if (mapper.ident) {
+        mapper.id = mapper.ident;
+      }
+
+      return mapper;
+    });
 
     mapperConfigs.forEach((config) => {
       const mapper = this.createMapperByConfig(config);

src/Typings.ts

@@ -7,6 +7,8 @@ export enum IOutputType {
 
 export interface IMapperConfig {
   id: string;
+  /** @deprecated */
+  ident?: string;
   params: any;
 }