feat(ViewWrapper): Add the ViewWrapper class to libview

src/ViewWrapper.ts

+import {ViewDescription, View} from '.';
+
+export class ViewWrapper {
+    DESCRIPTOR: ViewDescription;
+    _VIEW_ENTRYPOINT?: View;
+
+    constructor(descriptor: ViewDescription) {
+        this.DESCRIPTOR = descriptor;
+    }
+
+    getViewEntrypoint(): Promise<View> {
+        const fetchViewData = async () => {
+            // eslint-disable-next-line no-eval
+            const viewData = eval(
+                await fetch(this.viewUrl).then((data) => data.text())
+            );
+            return viewData;
+        };
+
+        return new Promise((resolve, reject) => {
+            if (this._VIEW_ENTRYPOINT === undefined) {
+                fetchViewData()
+                    .then((viewData) => {
+                        if (viewData.VIEW_ENTRYPOINT === undefined) {
+                            reject(`View entrypoint is not defined in ${this.DESCRIPTOR.name}`);
+                        }
+                        this._VIEW_ENTRYPOINT = viewData.VIEW_ENTRYPOINT;
+                        resolve(viewData.VIEW_ENTRYPOINT);
+                    })
+                    .catch((e) => {
+                        console.error('Error fetching view data : ', e);
+                        reject(e);
+                    });
+            } else {
+                resolve(this._VIEW_ENTRYPOINT);
+            }
+        });
+    }
+
+    isApplicable(uri: string, endpoint: string): Promise<boolean> {
+        return new Promise((resolve, reject) => {
+            this.getViewEntrypoint()
+                .then((view) => {
+                    resolve(view.isApplicable(uri, endpoint));
+                })
+                .catch((e) => {
+                    console.error('Error fetching view data : ', e);
+                    reject(e);
+                });
+        });
+    }
+
+    get name(): string {
+        return this.DESCRIPTOR.name;
+    }
+
+    get id(): string {
+        return this.DESCRIPTOR.name;
+    }
+
+    get viewUrl(): string {
+        return this.DESCRIPTOR.url;
+    }
+}

src/index.ts

@@ -17,3 +17,5 @@ export interface ViewDescription {
     description: string;
     url: string;
 }
+
+export {ViewWrapper} from './ViewWrapper';