Add initial types for samples

data-viewer/@types/DataService/index.js

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+// This is an automatically generated file. Please do not change its contents manually!
+const cds = require('@sap/cds')
+const cson = cds.entities('DataService')
+module.exports.Entity = cson.Entities
+module.exports.Entities = cson.Entities
+module.exports.Data = cson.Data
+module.exports.Data_ = cson.Data

data-viewer/@types/DataService/index.ts

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+// This is an automatically generated file. Please do not change its contents manually!
+import * as __ from './../_';
+
+
+
+
+
+/**
+* Metadata like name and columns/elements
+*/
+export function Entity<TBase extends new (...args: any[]) => {}>(Base: TBase) {
+  return class EntityAspect extends Base {
+    name: string;
+    columns: {
+    name: string;
+    type: string;
+    isKey: boolean;
+  };
+  };
+}
+const EntityXtended = Entity(__.Entity)
+export type Entity = InstanceType<typeof EntityXtended>
+
+export class Entities extends Array<Entity> {
+}
+
+/**
+* The actual data, organized by column name
+*/
+export function Data<TBase extends new (...args: any[]) => {}>(Base: TBase) {
+  return class DataAspect extends Base {
+    record: {};
+  };
+}
+const DataXtended = Data(__.Entity)
+export type Data = InstanceType<typeof DataXtended>
+
+export class Data_ extends Array<Data> {
+}
+

data-viewer/@types/_/index.js

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+// This is an automatically generated file. Please do not change its contents manually!
+const cds = require('@sap/cds')
+const cson = cds.entities('_')

data-viewer/@types/_/index.ts

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+// This is an automatically generated file. Please do not change its contents manually!
+
+
+export namespace Association {
+    export type to <T> = T & ((fn:(a:T)=>any) => T)
+    export namespace to {
+        // type many <T> = T[] & (T extends (infer R)[] ? R[] & ((fn:(a:R)=>any) => R[]) : T[]);
+        export type many <T extends readonly unknown[]> = T & ((fn:(a:T[number])=>any) => T[number]);
+    }
+}
+
+export namespace Composition {
+    export type of <T> = T & ((fn:(a:T)=>any) => T)
+    export namespace of {
+        //type many <T> = T[] & (T extends (infer R)[] ? R[] & ((fn:(a:R)=>any) => R[]) : T[]);
+        export type many <T extends readonly unknown[]> = T & ((fn:(a:T[number])=>any) => T[number]);
+    }
+}
+
+export class Entity {
+    static data<T extends Entity> (this:T, input:Object) : T { 
+        return {} as T // mock
+    } 
+}
+  
+export type EntitySet<T> = T[] & {
+    data (input:object[]) : T[]
+    data (input:object) : T
+}
+
+
+
+
+
+

data-viewer/jsconfig.json

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+{
+  "compilerOptions": {
+    "checkJs": true
+  }
+}