@jupyterlite/xeus-sqlite-kernel/lib/worker.js

A SQLite kernel for JupyterLite, powered by Xeus

// Copyright (c) Thorsten Beier
// Copyright (c) JupyterLite Contributors
// Distributed under the terms of the Modified BSD License.
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
import createXeusModule from './xeus_kernel.js';
// We alias self to ctx and give it our newly created type
const ctx = self;
let raw_xkernel;
let raw_xserver;
async function get_stdin() {
    const replyPromise = new Promise(resolve => {
        resolveInputReply = resolve;
    });
    return replyPromise;
}
// eslint-disable-next-line
// @ts-ignore: breaks typedoc
ctx.get_stdin = get_stdin;
// eslint-disable-next-line
// @ts-ignore: breaks typedoc
let resolveInputReply;
async function loadCppModule(moduleFactory) {
    const options = {};
    return moduleFactory(options).then((Module) => {
        raw_xkernel = new Module.xkernel();
        raw_xserver = raw_xkernel.get_server();
        raw_xkernel.start();
    });
}
const loadCppModulePromise = loadCppModule(createXeusModule);
ctx.onmessage = async (event) => {
    await loadCppModulePromise;
    const data = event.data;
    const msg = data.msg;
    const msg_type = msg.header.msg_type;
    if (msg_type === 'input_reply') {
        resolveInputReply(msg);
    }
    else {
        raw_xserver.notify_listener(msg);
    }
};