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silverbullet/plugbox/node_sandbox.ts

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import { ControllerMessage, WorkerLike, WorkerMessage } from "./types";
import { System, Sandbox } from "./runtime";
import { Worker } from "worker_threads";
import * as fs from "fs";
import { safeRun } from "./util";
// @ts-ignore
import workerCode from "bundle-text:./node_worker.ts"
// ParcelJS will simply inline this into the bundle.
// const workerCode = fs.readFileSync(__dirname + "/node_worker.ts", "utf-8");
class NodeWorkerWrapper implements WorkerLike {
onMessage?: (message: any) => Promise<void>;
private worker: Worker;
constructor(worker: Worker) {
this.worker = worker;
worker.on("message", (message: any) => {
safeRun(async () => {
await this.onMessage!(message);
});
});
}
postMessage(message: any): void {
this.worker.postMessage(message);
}
terminate(): void {
this.worker.terminate();
}
}
export function createSandbox(system: System<any>) {
return new Sandbox(
system,
new NodeWorkerWrapper(
new Worker(workerCode, {
eval: true,
})
)
);
}