Kotaro Chikuba mizchi

original

https://github.com/helix-editor/helix/blob/master/runtime/tutor

Helix Tutor 日本語訳（Markdown版）

原文のキー表記・コマンドはそのまま残し、説明文のみ日本語に訳しています。

Bundle Size Analysis

This document analyzes the bundle size of MoonBit JavaScript output, identifying the main contributors to code size and potential optimization opportunities.

Note: The analyzed output is after terser DCE (Dead Code Elimination) with compress enabled. Unused code has already been removed.

Analysis Target

https://github.com/mizchi/js.mbt/blob/main/src/examples/aisdk/main.mbt

Moonbit FFI Core

///|
#external
pub type JsValue

///|
pub fn[T] JsValue::cast(self : JsValue) -> T = "%identity"

Proposal	Author	Status	Review and discussion
ME-0011	mizchi	Under review	Github issue

新しい json enum 構文を提案します。

モチベーション

///|
extern "js" fn ffi_request_animation_frame(f : () -> Unit) -> Unit =
  #|(f) => {
  #|  if (globalThis.requestAnimationFrame) {
  #|    requestAnimationFrame(f)
  #|  } else {
  #|    setTimeout(f, 0) // fallback
  #|  }
  #|}

	// deno run -A compile-mbt.ts
	import * as comlink from "npm:comlink@4.4.2";

	const mooncWorkerPath = import.meta.resolve(
	"npm:@moonbit/moonc-worker@0.1.202601213/moonc-worker.js"
	);

	// 標準ライブラリの .mi ファイルを読み込む
	function getStdMiFiles(target = "js"): [string, Uint8Array][] {
	const home = Deno.env.get("HOME") \|\| "";

	// JSON Parser in Wado - TDD approach
	// Goal: Verify if Wado can implement a JSON parser

	use {println, Stdout} from "core:cli";

	// =============================================================================
	// Parser State
	// =============================================================================

	struct Parser {

	// Minimal Baseline JIT for WebAssembly (ARM64)
	// Zig implementation

	const std = @import("std");
	const fs = std.fs;
	const mem = std.mem;
	const Allocator = std.mem.Allocator;

	// ============================================================================
	// Code buffer for JIT compilation

	/// original https://github.com/moonbit-community/jmop/blob/main/promise.mbt

	///\|
	extern "js" fn ffi_promise_resolve(x : Value) -> Value = "(x) => Promise.resolve(x)"

	///\|
	extern "js" fn ffi_promise_reject(e : Error) -> Value = "(x) => Promise.reject(x)"

	///\|
	extern "js" fn ffi_promise_then(

	```mbt
	async fn[T, U] map_async(arr: Array[T], f: async (T) -> U raise?) -> Array[U] raise? {
	let res: Array[U] = []
	for item in arr {
	res.push(f(item))
	}
	res
	}

	async test {