feat: items-editor (#5)

* format readme

* update logo

* format html

* add logo to docs

* repository for document and document tokens

* add attachments type and repository

* autogenerate types via scripts

* use autogenerated types

* attachment type updates

* add insured and quantity fields for items

* implement HasID interface for entities

* implement label updates for items

* implement service update method

* WIP item update client side actions

* check err on attachment

* finish types for basic items editor

* remove unused var

* house keeping

frontend/lib/api/base/base-api.ts

@@ -8,10 +8,50 @@ import { Requests } from "../../requests";
 // 	TDeleteResult = void
 // >
 
+type BaseApiType = {
+  createdAt: string;
+  updatedAt: string;
+};
+
+export function hasKey(obj: object, key: string): obj is Required<BaseApiType> {
+  return typeof obj[key] === "string";
+}
+
+export function parseDate<T>(obj: T, keys: Array<keyof T> = []): T {
+  const result = { ...obj };
+  [...keys, "createdAt", "updatedAt"].forEach(key => {
+    // @ts-ignore - we are checking for the key above
+    if (hasKey(result, key)) {
+      // @ts-ignore - we are guarding against this above
+      result[key] = new Date(result[key]);
+    }
+  });
+
+  return result;
+}
+
 export class BaseAPI {
   http: Requests;
 
   constructor(requests: Requests) {
     this.http = requests;
   }
+
+  /**
+   * dropFields will remove any fields that are specified in the fields array
+   * additionally, it will remove the `createdAt` and `updatedAt` fields if they
+   * are present. This is useful for when you want to send a subset of fields to
+   * the server like when performing an update.
+   */
+  dropFields<T>(obj: T, keys: Array<keyof T> = []): T {
+    const result = { ...obj };
+    [...keys, "createdAt", "updatedAt"].forEach(key => {
+      // @ts-ignore - we are checking for the key above
+      if (hasKey(result, key)) {
+        // @ts-ignore - we are guarding against this above
+        delete result[key];
+      }
+    });
+    return result;
+  }
 }