api(@deltachat/stdio-rpc-server): also export a class

This is convenient for bots and libs for bots, so they can extend from this class directly

Author: DavidSM100

deltachat-rpc-server/npm-package/index.d.ts

@@ -35,6 +35,13 @@ export interface StartOptions {
  */
 export function startDeltaChat(directory: string, options?: Partial<SearchOptions & StartOptions> ): DeltaChatOverJsonRpcServer
 
+export class DeltaChatOverJsonRpc extends StdioDeltaChat {
+  constructor(
+    directory: string,
+    options?: Partial<SearchOptions & StartOptions>
+  );
+  readonly pathToServerBinary: string;
+}
 
 export namespace FnTypes {
     export type getRPCServerPath = typeof getRPCServerPath

deltachat-rpc-server/npm-package/index.js

@@ -106,3 +106,46 @@ export function startDeltaChat(directory, options = {}) {
 
   return dc;
 }
+
+export class DeltaChatOverJsonRpc extends StdioDeltaChat {
+  /**
+   *
+   * @param {string} directory
+   * @param {Partial<import("./index").SearchOptions & import("./index").StartOptions>} options
+   */
+  constructor(directory, options = {}) {
+    const pathToServerBinary = getRPCServerPath(options);
+    const server = spawn(pathToServerBinary, {
+      env: {
+        RUST_LOG: process.env.RUST_LOG,
+        DC_ACCOUNTS_PATH: directory,
+      },
+      stdio: ["pipe", "pipe", options.muteStdErr ? "ignore" : "inherit"],
+    });
+
+    server.on("error", (err) => {
+      throw new Error(
+        FAILED_TO_START_SERVER_EXECUTABLE(pathToServerBinary, err)
+      );
+    });
+    let shouldClose = false;
+
+    server.on("exit", () => {
+      if (shouldClose) {
+        return;
+      }
+      throw new Error("Server quit");
+    });
+
+    super(server.stdin, server.stdout, true);
+
+    this.close = () => {
+      shouldClose = true;
+      if (!server.kill()) {
+        console.log("server termination failed");
+      }
+    };
+
+    this.pathToServerBinary = pathToServerBinary;
+  }
+}