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webpack5-rust-wasm-template

v1.0.1

Published

![build](https://github.com/freeshineit/webpack5-rust-wasm-template/workflows/build/badge.svg)

Downloads

3

Readme

webpack5-rust-wasm-template

build

Use

# install dependency
yarn install

# development
# 如果运行时 rust没有编译 , 请移除node_modules重新安装
yarn run dev

# production
yarn run build

# https://github.com/http-party/http-server
# version >= 14
cd docs && http-server -p 8080 .

创建

webpack

yarn add webpack webpack-cli webpack-dev-server copy-webpack-plugin -D

typescript

yarn add @swc/core swc-loader typescript -D

sass

yarn add sass css-loader style-loader sass-loader -D

wasm-pack

rust 编译成 webassembly 需要 wasm-pack

# 不建议全局安装
# 如果wasm-pack 有问题, 请删除 `node_modules`重新安装依赖
yarn add wasm-pack -D

# webpack plugin
yarn add @wasm-tool/wasm-pack-plugin -D

# 创建 rust 项目
cargo new wasm --lib

wasm中的Cargo.toml中添加下面依赖

[lib]
crate-type = ["cdylib", "rlib"]

[dependencies]
wasm-bindgen = "0.2"

# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
# compared to the default allocator's ~10K. It is slower than the default
# allocator, however.
wee_alloc = { version = "0.4.5", optional = true }

[features]
default = ["wee_alloc"]

[dev-dependencies]
wasm-bindgen-test = "0.3"

[package.metadata.wasm-pack.profile.release]
wasm-opt = ["-Oz", "--enable-mutable-globals"]

更新wasm/src/lib.rs

// 这个很重要, 预加载wasm_bindgen
use wasm_bindgen::prelude::*;

// When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
// allocator.
#[cfg(feature = "wee_alloc")]
#[global_allocator]
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;

// #[wasm_bindgen]属性 是把当前函数暴露给js使用
#[wasm_bindgen]
pub fn add(left: usize, right: usize) -> usize {
    left + right
}

WebAssembly

使用 rust 编译后的产物wasm/pkg, 在app/index.ts中引入。

// https://developer.mozilla.org/zh-CN/docs/WebAssembly/Loading_and_running
import("../wasm/pkg").then((module) => {
  // module.add 就是 .wasm 暴露出来的函数
  const add = module.add;
  console.log(add(1, 2));
});

Github action

.github