change BaseRegistry to only have one type parameter (#1474)

* change BaseRegistry to only have one type parameter

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/common/utils/index.ts

@@ -1,5 +1,7 @@
 // Common utils (main OR renderer)
 
+export const noop: any = () => { /* empty */ };
+
 export * from "./app-version";
 export * from "./autobind";
 export * from "./base64";
@@ -12,3 +14,4 @@ export * from "./splitArray";
 export * from "./saveToAppFiles";
 export * from "./singleton";
 export * from "./openExternal";
+export * from "./rectify-array";

src/common/utils/rectify-array.ts

@@ -0,0 +1,8 @@
+/**
+ * rectify condences the single item or array of T type, to an array.
+ * @param items either one item or an array of items
+ * @returns a list of items
+ */
+export function recitfy<T>(items: T | T[]): T[] {
+  return Array.isArray(items) ? items : [items];
+}

src/extensions/registries/base-registry.ts

@@ -1,20 +1,21 @@
 // Base class for extensions-api registries
 import { action, observable } from "mobx";
 import { LensExtension } from "../lens-extension";
+import { recitfy } from "../../common/utils";
 
-export class BaseRegistry<T = object, I extends T = T> {
+export class BaseRegistry<T> {
   private items = observable<T>([], { deep: false });
 
-  getItems(): I[] {
-    return this.items.toJS() as I[];
+  getItems(): T[] {
+    return this.items.toJS();
   }
 
   add(items: T | T[], ext?: LensExtension): () => void; // allow method overloading with required "ext"
   @action
   add(items: T | T[]) {
-    const normalizedItems = (Array.isArray(items) ? items : [items]);
-    this.items.push(...normalizedItems);
-    return () => this.remove(...normalizedItems);
+    const itemArray = recitfy(items);
+    this.items.push(...itemArray);
+    return () => this.remove(...itemArray);
   }
 
   @action

src/extensions/registries/page-registry.ts

@@ -7,6 +7,7 @@ import { compile } from "path-to-regexp";
 import { BaseRegistry } from "./base-registry";
 import { LensExtension } from "../lens-extension";
 import logger from "../../main/logger";
+import { recitfy } from "../../common/utils";
 
 export interface PageRegistration {
   /**
@@ -59,12 +60,13 @@ export function getExtensionPageUrl<P extends object>({ extensionId, pageId = ""
   return extPageRoutePath;
 }
 
-export class PageRegistry extends BaseRegistry<PageRegistration, RegisteredPage> {
+export class PageRegistry extends BaseRegistry<RegisteredPage> {
   @action
-  add(items: PageRegistration[], ext: LensExtension) {
+  add(items: PageRegistration | PageRegistration[], ext: LensExtension) {
+    const itemArray = recitfy(items);
     let registeredPages: RegisteredPage[] = [];
     try {
-      registeredPages = items.map(page => ({
+      registeredPages = itemArray.map(page => ({
         ...page,
         extensionId: ext.name,
         routePath: getExtensionPageUrl({ extensionId: ext.name, pageId: page.id ?? page.routePath }),

src/renderer/utils/index.ts

@@ -1,6 +1,5 @@
 // Common usage utils & helpers
 
-export const noop: any = Function();
 export const isElectron = !!navigator.userAgent.match(/Electron/);
 
 export * from "../../common/utils";