Kotaro Chikuba mizchi

## vscode-side-preview-extensions.tsx
import vscode from "vscode";
import path from "path";

export function activate(context: vscode.ExtensionContext) {
  context.subscriptions.push(
    vscode.Disposable.from(registerOpenCommand(context))
  );
}

function openPreview(

## immer-and-weakref-failed.ts
import produce, { current } from "immer";

type Node = {
  value: string;
  children: Node[];
};

const tree: Node = {
  value: "root",
  children: [

## browser-gzip.ts
declare const DecompressionStream: any;
declare const CompressionStream: any;

const encoder = new TextEncoder();
const decoder = new TextDecoder();
async function compress(str: string): Promise<ArrayBuffer> {
  const cs = new CompressionStream("gzip");
  const buf = encoder.encode(str);
  const stream = new Response(buf).body!.pipeThrough(cs);
  return new Response(stream as any).arrayBuffer();

## portal-guest.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
  </head>
  <body style="height: 200vh">
    <h1>portal guest</h1>
    <script>
      portalHost.postMessage("foo");
      portalHost.onmessage = (ev) => {

## index.js
export function __test__({ test }) {
  test("xxx", () => {
    console.log("ok");
  });
}

console.log("...");

## deno_code_reading_20210516.md

      
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              Last active May 18, 2021
            
          
      View deno_code_reading_20210516.md
  
      
    Deno の コードリーディング
動機
cloudflare worker, deno deploy 等で v8 isolates を前提にしたホスティングプラットフォームが増えている。これを自分で実装してみたいと思った。
denoland/rusty_v8 を読んだが、SnapshotCreator の使い方がよくわからなかった。これを deno 本体を読んで使い方を調べた。
ついでに、rusty_v8、というか v8 にはメインループやスケジューラが含まれていないので、 Tokio のメインループで、どのように deno が非同期メインループを実装しているか調べた。

  
## rusty_v8_minimum_snapshot.rs
use rusty_v8 as v8;
use std::mem::forget;

fn main() {
    let platform = v8::new_default_platform().unwrap();
    v8::V8::initialize_platform(platform);
    v8::V8::initialize();
    let snapshot;
    // --- create snapshot ---
    {

## how_to_use_deno_snapshot.rs
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.

use deno_core::{JsRuntime, RuntimeOptions, Snapshot};

fn main() {
  // create snapshot
  let mut runtime = JsRuntime::new(RuntimeOptions {
    will_snapshot: true,
    ..Default::default()
  });

## context_store.ts
type EventBase = {
  __uid?: string;
  __ts?: number;
};

type PubSub<Event> = {
  dispatch: (ev: Event) => void;
  subscribe: (fn: (ev: Event) => void) => void;
};

## template.html
<div>hello</div>
	import vscode from "vscode";
	import path from "path";

	export function activate(context: vscode.ExtensionContext) {
	context.subscriptions.push(
	vscode.Disposable.from(registerOpenCommand(context))
	);
	}

	function openPreview(
	import produce, { current } from "immer";

	type Node = {
	value: string;
	children: Node[];
	};

	const tree: Node = {
	value: "root",
	children: [
	declare const DecompressionStream: any;
	declare const CompressionStream: any;

	const encoder = new TextEncoder();
	const decoder = new TextDecoder();
	async function compress(str: string): Promise<ArrayBuffer> {
	const cs = new CompressionStream("gzip");
	const buf = encoder.encode(str);
	const stream = new Response(buf).body!.pipeThrough(cs);
	return new Response(stream as any).arrayBuffer();
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8" />
	</head>
	<body style="height: 200vh">
	<h1>portal guest</h1>
	<script>
	portalHost.postMessage("foo");
	portalHost.onmessage = (ev) => {
	export function __test__({ test }) {
	test("xxx", () => {
	console.log("ok");
	});
	}

	console.log("...");
	use rusty_v8 as v8;
	use std::mem::forget;

	fn main() {
	let platform = v8::new_default_platform().unwrap();
	v8::V8::initialize_platform(platform);
	v8::V8::initialize();
	let snapshot;
	// --- create snapshot ---
	{
	// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.

	use deno_core::{JsRuntime, RuntimeOptions, Snapshot};

	fn main() {
	// create snapshot
	let mut runtime = JsRuntime::new(RuntimeOptions {
	will_snapshot: true,
	..Default::default()
	});
	type EventBase = {
	__uid?: string;
	__ts?: number;
	};

	type PubSub<Event> = {
	dispatch: (ev: Event) => void;
	subscribe: (fn: (ev: Event) => void) => void;
	};