From 6430012fcac77aa96509ef535a148c742375127f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=B2=81=E6=A0=91=E4=BA=BA?= <lu.shuren@um-react.app>
Date: Sun, 4 May 2025 21:25:58 +0900
Subject: [PATCH] docs: add build instruction and npm usage

---
 README.MD | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/README.MD b/README.MD
index e6b4859..1ca34dd 100644
--- a/README.MD
+++ b/README.MD
@@ -12,6 +12,42 @@ lib_um_crypto_rust
 └── um_wasm_loader  打包 `um_wasm` 到 npm 包的代码。
 ```
 
+## 构建说明
+
+```
+bash build.sh
+```
+
+### 单独构建 um_wasm
+
+首先安装 `wasm-pack`：
+
+```sh
+curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+```
+
+然后构建：
+
+```sh
+cd um_wasm
+wasm-pack build --release --target web
+```
+
+注意此处构建的产出不会被用于 NPM 包。
+
+### 构建 NPM 包
+
+安装 `wasm-pack` 以及 `pnpm`，然后构建：
+
+```sh
+cd um_wasm_loader
+pnpm build
+```
+
+## 作 NPM 包使用
+
+参考 [`um_wasm_loader/Readme.MD`](um_wasm_loader/Readme.MD) 的说明。
+
 ## 授权协议
 
 Apache License 2.0 + MIT 双协议