Learn WebAssembly

Tests file review

Let's walk through the test file, located at /src/__tests__/main.test.js, and review the purpose of each section of code. The first section of the test file instantiates the main.wasm file and assigns the result to the local wasmInstance variable:

const fs = require('fs');const path = require('path');describe('main.wasm Tests', () => {  let wasmInstance;  beforeAll(async () => {    const wasmPath = path.resolve(__dirname, '..', 'main.wasm');    const buffer = fs.readFileSync(wasmPath);    const results = await WebAssembly.instantiate(buffer, {      env: {        memoryBase: 0,        tableBase: 0,        memory: new WebAssembly.Memory({ initial: 1024 }),        table: new WebAssembly.Table({ initial: 16, element: 'anyfunc' }),        abort: console.log      }    }); wasmInstance ...