Added typings for internal events API (#3014)

Co-authored-by: Lukas Holländer <[email protected]>

Author: gevzak

types/index.d.ts

@@ -50,8 +50,6 @@
  */
 
 declare module "jspdf" {
-  import construct = Reflect.construct;
-
   export interface Annotation {
     type: "text" | "freetext" | "link";
     title?: string;
@@ -633,6 +631,20 @@ declare module "jspdf" {
     yStep?: number;
   }
 
+  export interface PubSub {
+    subscribe(
+      topic: string,
+      callback: (...args: any[]) => void,
+      once?: boolean
+    ): string;
+    unsubscribe(token: string): boolean;
+    publish(topic: string, ...args: any[]): void;
+    getTopics(): Record<
+      string,
+      Record<string, [(...args: any[]) => void, boolean]>
+    >;
+  }
+
   export class jsPDF {
     constructor(options?: jsPDFOptions);
     constructor(
@@ -844,6 +856,7 @@ declare module "jspdf" {
     getVerticalCoordinateString(value: number): number;
 
     internal: {
+      events: PubSub;
       scaleFactor: number;
       pageSize: {
         width: number;

types/jspdf-tests-node.ts

@@ -18,6 +18,17 @@ const {
   TilingPattern
 } = jspdf;
 
+function pubsub() {
+  const doc = new jsPDF();
+  const token = doc.internal.events.subscribe("topic", (a, b) => {}, true);
+  doc.internal.events.unsubscribe(token);
+  doc.internal.events.publish("topic", 1, "foo");
+  const topics = doc.internal.events.getTopics();
+  if (topics["topic"][token][1]) {
+    topics["topic"][token][0](1, "foo");
+  }
+}
+
 function classes() {
   new GState({});
   new TilingPattern([], 0, 0);

types/jspdf-tests.ts

@@ -17,6 +17,17 @@ import {
   AcroFormTextField
 } from "jspdf";
 
+function pubsub() {
+  const doc = new jsPDF();
+  const token = doc.internal.events.subscribe("topic", (a, b) => {}, true);
+  doc.internal.events.unsubscribe(token);
+  doc.internal.events.publish("topic", 1, "foo");
+  const topics = doc.internal.events.getTopics();
+  if (topics["topic"][token][1]) {
+    topics["topic"][token][0](1, "foo");
+  }
+}
+
 function classes() {
   new GState({});
   new TilingPattern([], 0, 0);

types/tsconfig.json

@@ -8,5 +8,5 @@
     "noEmit": true,
     "forceConsistentCasingInFileNames": true
   },
-  "files": ["index.d.ts", "jspdf-tests.ts", "jspdf-tests.ts"]
+  "files": ["index.d.ts", "jspdf-tests.ts"]
 }