rust-webwasm/index.js

import wasmInit from "./pkg/gamarjoba.js"

const runWasm = async () => {
    const rustWasm = await wasmInit("./pkg/gamarjoba_bg.wasm");

    const result = rustWasm.de_iavascriptis(0, 1);
    console.log("Should be undefined: ", rustWasm.add_integer_with_constant);
    document.body.textContent = `Gamarjoba! result: ${result}`;

    const NUMBER = 257;

    console.log("Write in WASM, read in JS");
    rustWasm.store_value_in_wasm_mem_idx_0(NUMBER);
    let wasmMemory = new Uint8Array(rustWasm.memory.buffer);
    let ptr = rustWasm.get_wasm_mem_buffer_pointer();
    console.log("Pointer from rust: ", ptr);

    console.log(wasmMemory[ptr+0]); // should be NUMBER, wrapped around 256

    console.log("Write in JS, read in wasm");
    wasmMemory[ptr+1] = 15;
    console.log(rustWasm.read_wasm_mem_buffer_idx_1()); // should be 15

};

runWasm();