wechat_weapp_miniprogram_rust_wasm_bindgen_wasm-pack.txt

> cat Cargo.toml                                                                                        fish-0 | 0 (0.008s) < 21:08:47
[package]
name = "hiwasm"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[lib]
crate-type = ["cdylib"]

[dependencies]
wasm-bindgen = "0.2"

[profile.release]
opt-level = "s"
lto = true

> cat src/lib.rs                                                                                        fish-0 | 0 (0.005s) < 21:08:49
use wasm_bindgen::prelude::*;

#[wasm_bindgen]
extern {
    pub fn alert(s: &str);
}

#[wasm_bindgen]
pub fn greet(name: &str) {
    alert(&format!("Hello, {}!", name));
}

#[wasm_bindgen]
pub fn add(a: i32, b: i32) -> i32 {
    //utils::set_panic_hook();
    a + b
}

#[wasm_bindgen]
pub fn first_char(input: &str) -> char {
    //utils::set_panic_hook();
    input.chars().next().unwrap()
}

wasm-pack build --target web

> ll pkg/                                                                                               fish-0 | 0 (0.007s) < 21:09:33
total 168
-rw-r--r--  1 laris  staff   2.3K Jan 30 14:45 EncoderDecoderTogether.min.js
-rw-r--r--  1 laris  staff   1.4K Jan 30 20:34 hiwasm.d.ts
-rw-r--r--  1 laris  staff   4.7K Jan 30 20:34 hiwasm.js
-rw-r--r--  1 laris  staff    13K Jan 30 20:34 hiwasm_bg.wasm
-rw-r--r--  1 laris  staff   374B Jan 30 20:34 hiwasm_bg.wasm.d.ts
-rw-r--r--  1 laris  staff   615B Jan 30 20:45 js-patch-1.diff
-rw-r--r--  1 laris  staff   194B Jan 30 20:34 package.json
-rw-r--r--  1 laris  staff   1.7K Jan 30 14:45 wx.patch

> cat pkg/js-patch-1.diff                                                                               fish-0 | 0 (0.005s) < 21:09:51
0a1,4
> require('./EncoderDecoderTogether.min.js')
> const { TextEncoder, TextDecoder } = global;
> const WebAssembly = WXWebAssembly;
> const fetch = e => e;
18c18,19
<     return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
---
>     return String.fromCharCode.apply(null, getUint8Memory0().subarray(ptr, ptr + len))
>
163,165d163
<     if (typeof input === 'undefined') {
<         input = new URL('hiwasm_bg.wasm', import.meta.url);
<     }
174c172
<     const { instance, module } = await load(await input, imports);
---
>     const { instance, module } = await load(input, imports);

// pages/index/index.js
import init, {add, first_char} from './hiwasm'
Page({
    onLoad: async function (options) {
      await init('/pages/index/hiwasm_bg.wasm');
      var res = add(1, 2);
      console.log(res)
      var res;
      wx.setClipboardData({
        data: first_char('微信借铁板'),
        success (res) {
          wx.getClipboardData({
            success (res) {
              console.log(res.data) // data
            }
          })
        }
      })
      //console.log(data)
    }
})