loro/crates/loro-wasm/scripts/build.ts

import __ from "https://deno.land/x/dirname@1.1.2/mod.ts";
import { resolve } from "https://deno.land/std@0.105.0/path/mod.ts";
const { __dirname } = __(import.meta);

// deno run -A build.ts debug
// deno run -A build.ts release
// deno run -A build.ts release web
// deno run -A build.ts release nodejs
let profile = "dev";
let profileDir = "debug";
if (Deno.args[0] == "release") {
  profile = "release";
  profileDir = "release";
}
const TARGETS = ["bundler", "nodejs"];
const startTime = performance.now();
const LoroWasmDir = resolve(__dirname, "..");

console.log(LoroWasmDir);
async function build() {
  await cargoBuild();
  const target = Deno.args[1];
  if (target != null) {
    if (!TARGETS.includes(target)) {
      throw new Error(`Invalid target ${target}`);
    }

    buildTarget(target);
    return;
  }

  await Promise.all(TARGETS.map((target) => {
    return buildTarget(target);
  }));

  if (profile !== "dev") {
    await Promise.all(TARGETS.map(async (target) => {
      const cmd =
        `wasm-opt -O4 ./${target}/loro_wasm_bg.wasm -o ./${target}/loro_wasm_bg.wasm`;
      console.log(">", cmd);
      await Deno.run({ cmd: cmd.split(" "), cwd: LoroWasmDir }).status();
    }));
  }

  console.log(
    "✅",
    "Build complete in",
    (performance.now() - startTime) / 1000,
    "s",
  );
}

async function cargoBuild() {
  const cmd =
    `cargo build --target wasm32-unknown-unknown --profile ${profile}`;
  console.log(cmd);
  const status = await Deno.run({
    cmd: cmd.split(" "),
    cwd: LoroWasmDir,
  }).status();
  if (!status.success) {
    console.log(
      "❌",
      "Build failed in",
      (performance.now() - startTime) / 1000,
      "s",
    );
    Deno.exit(status.code);
  }
}

async function buildTarget(target: string) {
  console.log("🏗️  Building target", `[${target}]`);
  const targetDirPath = resolve(LoroWasmDir, target);
  try {
    await Deno.remove(targetDirPath, { recursive: true });
    console.log("Clear directory " + targetDirPath);
  } catch (_e) {
    //
  }

  const cmd =
    `wasm-bindgen --weak-refs --target ${target} --out-dir ${target} ../../target/wasm32-unknown-unknown/${profileDir}/loro_wasm.wasm`;
  console.log(">", cmd);
  await Deno.run({ cmd: cmd.split(" "), cwd: LoroWasmDir }).status();
  console.log();

  if (target === "nodejs") {
    console.log("🔨  Patching nodejs target");
    const patch = await Deno.readTextFile(
      resolve(__dirname, "./nodejs_patch.js"),
    );
    const wasm = await Deno.readTextFile(
      resolve(targetDirPath, "loro_wasm.js"),
    );
    await Deno.writeTextFile(
      resolve(targetDirPath, "loro_wasm.js"),
      wasm + "\n" + patch,
    );
  }
}

build();