citkane/index.ts

## index.ts
import lib, {
      _bindName,
      _evalHelloWorld,
      _evalString,
      dispatchJSCallback,
      makeBindCallback,
} from "./lib.ts";

const worker = new Worker(import.meta.resolve("./worker.ts"), { type: "module" });

worker.onmessage = (event) => {
      const handle = Deno.UnsafePointer.create(event.data as bigint);
      const bindJSCallback = makeBindCallback(handle);
      try {
            lib.webview_dispatch(handle, dispatchJSCallback.pointer);
            lib.webview_bind(handle, _bindName, bindJSCallback.pointer, null);
            lib.webview_eval(handle, _evalHelloWorld);
      } catch (err) {
            console.error("error:", err);
      }
      setTimeout(() => {
            lib.webview_eval(handle, _evalString);
      }, 1000);
      setTimeout(() => {
            lib.webview_terminate(handle);
      }, 2000);
};

## lib.ts
import { resolve } from "node:path";

const encoder = new TextEncoder();
const libPath = resolve("../libwebview.so");
const { symbols } = Deno.dlopen(libPath, {
      webview_create: {
            parameters: ["i32", "pointer"],
            result: "pointer",
      },
      webview_set_html: {
            parameters: ["pointer", "buffer"],
            result: "void",
      },
      webview_run: {
            parameters: ["pointer"],
            result: "void",
      },
      webview_dispatch: {
            parameters: ["pointer", "function"],
            result: "void",
      },
      webview_bind: {
            parameters: ["pointer", "buffer", "function", "buffer"],
            result: "void",
      },
      webview_eval: {
            parameters: ["pointer", "buffer"],
            result: "void",
      },
      webview_return: {
            parameters: ["pointer", "pointer", "i32", "buffer"],
            result: "void",
      },
      webview_destroy: {
            parameters: ["pointer"],
            result: "void",
      },
      webview_terminate: {
            parameters: ["pointer"],
            result: "void",
      },
});

export default symbols;

export const html = encoder.encode("<html>Worker</html>\0");
export const _bindName = encoder.encode("testBind\0");
export const _evalString = encoder.encode("testBind()\0");
export const _evalHelloWorld = encoder.encode(`console.log("Hello World")\0`);
export const _nullReturn = encoder.encode(`""\0`);

export const dispatchJSCallback = new Deno.UnsafeCallback(
      { parameters: ["pointer"], result: "void" },
      (id) => {
            console.log("dispatched!");
      }
);
export function makeBindCallback(handle: Deno.PointerValue) {
      return new Deno.UnsafeCallback(
            { parameters: ["pointer", "pointer", "pointer"], result: "void" },
            (id, argsStringPointer, userArgPointer?) => {
                  console.log("Bind was evaluated!");
                  symbols.webview_return(handle, id, 0, _nullReturn);
            }
      );
}

## worker.ts
declare const self: Worker;

import lib, { _bindName, dispatchJSCallback, html, makeBindCallback } from "./lib.ts";

const handle = lib.webview_create(1, null);
lib.webview_set_html(handle, html);

postMessage(Deno.UnsafePointer.value(handle));

lib.webview_run(handle);
lib.webview_destroy(handle);
process.exit();
	import lib, {
	_bindName,
	_evalHelloWorld,
	_evalString,
	dispatchJSCallback,
	makeBindCallback,
	} from "./lib.ts";

	const worker = new Worker(import.meta.resolve("./worker.ts"), { type: "module" });

	worker.onmessage = (event) => {
	const handle = Deno.UnsafePointer.create(event.data as bigint);
	const bindJSCallback = makeBindCallback(handle);
	try {
	lib.webview_dispatch(handle, dispatchJSCallback.pointer);
	lib.webview_bind(handle, _bindName, bindJSCallback.pointer, null);
	lib.webview_eval(handle, _evalHelloWorld);
	} catch (err) {
	console.error("error:", err);
	}
	setTimeout(() => {
	lib.webview_eval(handle, _evalString);
	}, 1000);
	setTimeout(() => {
	lib.webview_terminate(handle);
	}, 2000);
	};
	import { resolve } from "node:path";

	const encoder = new TextEncoder();
	const libPath = resolve("../libwebview.so");
	const { symbols } = Deno.dlopen(libPath, {
	webview_create: {
	parameters: ["i32", "pointer"],
	result: "pointer",
	},
	webview_set_html: {
	parameters: ["pointer", "buffer"],
	result: "void",
	},
	webview_run: {
	parameters: ["pointer"],
	result: "void",
	},
	webview_dispatch: {
	parameters: ["pointer", "function"],
	result: "void",
	},
	webview_bind: {
	parameters: ["pointer", "buffer", "function", "buffer"],
	result: "void",
	},
	webview_eval: {
	parameters: ["pointer", "buffer"],
	result: "void",
	},
	webview_return: {
	parameters: ["pointer", "pointer", "i32", "buffer"],
	result: "void",
	},
	webview_destroy: {
	parameters: ["pointer"],
	result: "void",
	},
	webview_terminate: {
	parameters: ["pointer"],
	result: "void",
	},
	});

	export default symbols;

	export const html = encoder.encode("<html>Worker</html>\0");
	export const _bindName = encoder.encode("testBind\0");
	export const _evalString = encoder.encode("testBind()\0");
	export const _evalHelloWorld = encoder.encode(`console.log("Hello World")\0`);
	export const _nullReturn = encoder.encode(`""\0`);

	export const dispatchJSCallback = new Deno.UnsafeCallback(
	{ parameters: ["pointer"], result: "void" },
	(id) => {
	console.log("dispatched!");
	}
	);
	export function makeBindCallback(handle: Deno.PointerValue) {
	return new Deno.UnsafeCallback(
	{ parameters: ["pointer", "pointer", "pointer"], result: "void" },
	(id, argsStringPointer, userArgPointer?) => {
	console.log("Bind was evaluated!");
	symbols.webview_return(handle, id, 0, _nullReturn);
	}
	);
	}
	declare const self: Worker;

	import lib, { _bindName, dispatchJSCallback, html, makeBindCallback } from "./lib.ts";

	const handle = lib.webview_create(1, null);
	lib.webview_set_html(handle, html);

	postMessage(Deno.UnsafePointer.value(handle));

	lib.webview_run(handle);
	lib.webview_destroy(handle);
	process.exit();