This is a simple example that shows the usage of WebAssembly.
WebAssembly modules can be imported like other async modules with import or import().
When importing, they are downloaded and instantiated in a streaming way.
import { add } from "./add.wasm";
import {
add as mathAdd,
factorial,
factorialJavascript,
fibonacci,
fibonacciJavascript
} from "./math";
console.log(add(22, 2200));
console.log(mathAdd(10, 101));
console.log(factorial(15));
console.log(factorialJavascript(15));
console.log(fibonacci(15));
console.log(fibonacciJavascript(15));
timed("wasm factorial", () => factorial(1500));
timed("js factorial", () => factorialJavascript(1500));
timed("wasm fibonacci", () => fibonacci(22));
timed("js fibonacci", () => fibonacciJavascript(22));
function timed(name, fn) {
if (!console.time || !console.timeEnd) return fn();
// warmup
for (var i = 0; i < 10; i++) fn();
console.time(name);
for (var i = 0; i < 5000; i++) fn();
console.timeEnd(name);
}import { add } from "./add.wasm";
import { factorial } from "./factorial.wasm";
import { fibonacci } from "./fibonacci.wasm";
export { add, factorial, fibonacci };
export function factorialJavascript(i) {
if (i < 1) return 1;
return i * factorialJavascript(i - 1);
}
export function fibonacciJavascript(i) {
if (i < 2) return 1;
return fibonacciJavascript(i - 1) + fibonacciJavascript(i - 2);
}/******/ (() => { // webpackBootstrap
/******/ "use strict";
/******/ var __webpack_modules__ = ([
/* 0 */
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! namespace exports */
/*! exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__, __webpack_require__.r, __webpack_exports__, module, __webpack_require__.* */
/***/ ((module, __webpack_exports__, __webpack_require__) => {
module.exports = (async () => {
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _add_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./add.wasm */ 1);
/* harmony import */ var _math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./math */ 2);
([_math__WEBPACK_IMPORTED_MODULE_1__, _add_wasm__WEBPACK_IMPORTED_MODULE_0__] = await Promise.all([_math__WEBPACK_IMPORTED_MODULE_1__, _add_wasm__WEBPACK_IMPORTED_MODULE_0__]));
console.log((0,_add_wasm__WEBPACK_IMPORTED_MODULE_0__.add)(22, 2200));
console.log((0,_math__WEBPACK_IMPORTED_MODULE_1__.add)(10, 101));
console.log((0,_math__WEBPACK_IMPORTED_MODULE_1__.factorial)(15));
console.log((0,_math__WEBPACK_IMPORTED_MODULE_1__.factorialJavascript)(15));
console.log((0,_math__WEBPACK_IMPORTED_MODULE_1__.fibonacci)(15));
console.log((0,_math__WEBPACK_IMPORTED_MODULE_1__.fibonacciJavascript)(15));
timed("wasm factorial", () => (0,_math__WEBPACK_IMPORTED_MODULE_1__.factorial)(1500));
timed("js factorial", () => (0,_math__WEBPACK_IMPORTED_MODULE_1__.factorialJavascript)(1500));
timed("wasm fibonacci", () => (0,_math__WEBPACK_IMPORTED_MODULE_1__.fibonacci)(22));
timed("js fibonacci", () => (0,_math__WEBPACK_IMPORTED_MODULE_1__.fibonacciJavascript)(22));
function timed(name, fn) {
if (!console.time || !console.timeEnd) return fn();
// warmup
for (var i = 0; i < 10; i++) fn();
console.time(name);
for (var i = 0; i < 5000; i++) fn();
console.timeEnd(name);
}
return __webpack_exports__;
})();
/***/ }),
/* 1 */
/*!******************!*\
!*** ./add.wasm ***!
\******************/
/*! namespace exports */
/*! export add [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, module.id, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, module.id, "a7a690138d8dd16930b3")
/***/ }),
/* 2 */
/*!*****************!*\
!*** ./math.js ***!
\*****************/
/*! namespace exports */
/*! export add [provided] [no usage info] [missing usage info prevents renaming] -> ./add.wasm .add */
/*! export factorial [provided] [no usage info] [missing usage info prevents renaming] -> ./factorial.wasm .factorial */
/*! export factorialJavascript [provided] [no usage info] [missing usage info prevents renaming] */
/*! export fibonacci [provided] [no usage info] [missing usage info prevents renaming] -> ./fibonacci.wasm .fibonacci */
/*! export fibonacciJavascript [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__, __webpack_exports__, __webpack_require__.d, __webpack_require__.r, module, __webpack_require__.* */
/***/ ((module, __webpack_exports__, __webpack_require__) => {
module.exports = (async () => {
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */ "add": () => /* reexport safe */ _add_wasm__WEBPACK_IMPORTED_MODULE_0__.add,
/* harmony export */ "factorial": () => /* reexport safe */ _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__.factorial,
/* harmony export */ "fibonacci": () => /* reexport safe */ _fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__.fibonacci,
/* harmony export */ "factorialJavascript": () => /* binding */ factorialJavascript,
/* harmony export */ "fibonacciJavascript": () => /* binding */ fibonacciJavascript
/* harmony export */ });
/* harmony import */ var _add_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./add.wasm */ 1);
/* harmony import */ var _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./factorial.wasm */ 3);
/* harmony import */ var _fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./fibonacci.wasm */ 4);
([_fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__, _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__, _add_wasm__WEBPACK_IMPORTED_MODULE_0__] = await Promise.all([_fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__, _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__, _add_wasm__WEBPACK_IMPORTED_MODULE_0__]));
function factorialJavascript(i) {
if (i < 1) return 1;
return i * factorialJavascript(i - 1);
}
function fibonacciJavascript(i) {
if (i < 2) return 1;
return fibonacciJavascript(i - 1) + fibonacciJavascript(i - 2);
}
return __webpack_exports__;
})();
/***/ }),
/* 3 */
/*!************************!*\
!*** ./factorial.wasm ***!
\************************/
/*! namespace exports */
/*! export factorial [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, module.id, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, module.id, "9d2b0c46ef31acbcf414")
/***/ }),
/* 4 */
/*!************************!*\
!*** ./fibonacci.wasm ***!
\************************/
/*! namespace exports */
/*! export fibonacci [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, module.id, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, module.id, "0925a077f3cf38995044")
/***/ })
/******/ ]);/* webpack runtime code */
/************************************************************************/
/******/ // The module cache
/******/ var __webpack_module_cache__ = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ if(__webpack_module_cache__[moduleId]) {
/******/ return __webpack_module_cache__[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = __webpack_module_cache__[moduleId] = {
/******/ id: moduleId,
/******/ // no module.loaded needed
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
/******/ /* webpack/runtime/define property getters */
/******/ (() => {
/******/ // define getter functions for harmony exports
/******/ __webpack_require__.d = (exports, definition) => {
/******/ for(var key in definition) {
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
/******/ }
/******/ }
/******/ };
/******/ })();
/******/
/******/ /* webpack/runtime/hasOwnProperty shorthand */
/******/ (() => {
/******/ __webpack_require__.o = (obj, prop) => Object.prototype.hasOwnProperty.call(obj, prop)
/******/ })();
/******/
/******/ /* webpack/runtime/make namespace object */
/******/ (() => {
/******/ // define __esModule on exports
/******/ __webpack_require__.r = (exports) => {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/ })();
/******/
/******/ /* webpack/runtime/publicPath */
/******/ (() => {
/******/ __webpack_require__.p = "dist/";
/******/ })();
/******/
/******/ /* webpack/runtime/wasm chunk loading */
/******/ (() => {
/******/ __webpack_require__.v = (exports, wasmModuleId, wasmModuleHash, importsObj) => {
/******/ var req = fetch(__webpack_require__.p + "" + wasmModuleHash + ".wasm");
/******/ if (typeof WebAssembly.instantiateStreaming === 'function') {
/******/ return WebAssembly.instantiateStreaming(req, importsObj)
/******/ .then((res) => Object.assign(exports, res.instance.exports));
/******/ }
/******/ return req
/******/ .then((x) => x.arrayBuffer())
/******/ .then((bytes) => WebAssembly.instantiate(bytes, importsObj))
/******/ .then((res) => Object.assign(exports, res.instance.exports));
/******/ };
/******/ })();
/******/
/************************************************************************//******/ // startup
/******/ // Load entry module
/******/ __webpack_require__(0);
/******/ // This entry module used 'module' so it can't be inlined
/******/ })()
;asset output.js 9.05 KiB [emitted] (name: main)
asset 0925a077f3cf38995044.wasm 67 bytes [emitted] [immutable] (auxiliary name: main)
asset 9d2b0c46ef31acbcf414.wasm 62 bytes [emitted] [immutable] (auxiliary name: main)
asset a7a690138d8dd16930b3.wasm 41 bytes [emitted] [immutable] (auxiliary name: main)
chunk (runtime: main) output.js (main) 1.27 KiB (javascript) 170 bytes (webassembly) 1.19 KiB (runtime) [entry] [rendered]
> ./example.js main
runtime modules 1.19 KiB 5 modules
dependent modules 552 bytes (javascript) 170 bytes (webassembly) [dependent] 4 modules
./example.js 753 bytes [built] [code generated]
[no exports]
[used exports unknown]
entry ./example.js main
webpack 5.11.1 compiled successfully
asset output.js 1.59 KiB [emitted] [minimized] (name: main)
asset 908ca2d722f446ec8201.wasm 67 bytes [emitted] [immutable] (auxiliary name: main)
asset ea4e26db3d258a94d99d.wasm 62 bytes [emitted] [immutable] (auxiliary name: main)
asset f4c0bab8e2d961142f75.wasm 41 bytes [emitted] [immutable] (auxiliary name: main)
chunk (runtime: main) output.js (main) 1.27 KiB (javascript) 170 bytes (webassembly) 943 bytes (runtime) [entry] [rendered]
> ./example.js main
dependent modules 552 bytes (javascript) 170 bytes (webassembly) [dependent] 4 modules
runtime modules 943 bytes 4 modules
./example.js 753 bytes [built] [code generated]
[no exports]
[no exports used]
entry ./example.js main
webpack 5.11.1 compiled successfully