This very simple example shows usage of WebAssembly.
WebAssembly modules can be imported like other async modules with import await or import().
They are downloaded and instantiated in a streaming way when importing.
import await { add } from "./add.wasm";
import await { 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 await { add } from "./add.wasm";
import await { factorial } from "./factorial.wasm";
import await { 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);
}/******/ (function(modules) { /* webpackBootstrap */ })
/******/ (function(modules, runtime) { // webpackBootstrap
/******/ "use strict";
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/
/******/ // the startup function
/******/ function startup() {
/******/ // Load entry module and return exports
/******/ return __webpack_require__(0);
/******/ };
/******/ // initialize runtime
/******/ runtime(__webpack_require__);
/******/
/******/ // run startup
/******/ return startup();
/******/ })
/************************************************************************//******/ ([
/* 0 */
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__.r, __webpack_exports__, module, __webpack_require__ */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__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);
module.exports = Promise.all([_add_wasm__WEBPACK_IMPORTED_MODULE_0__, _math__WEBPACK_IMPORTED_MODULE_1__]).then(function([_add_wasm__WEBPACK_IMPORTED_MODULE_0__, _math__WEBPACK_IMPORTED_MODULE_1__]) {
console.log(Object(_add_wasm__WEBPACK_IMPORTED_MODULE_0__["add"])(22, 2200));
console.log(Object(_math__WEBPACK_IMPORTED_MODULE_1__["add"])(10, 101));
console.log(Object(_math__WEBPACK_IMPORTED_MODULE_1__["factorial"])(15));
console.log(Object(_math__WEBPACK_IMPORTED_MODULE_1__["factorialJavascript"])(15));
console.log(Object(_math__WEBPACK_IMPORTED_MODULE_1__["fibonacci"])(15));
console.log(Object(_math__WEBPACK_IMPORTED_MODULE_1__["fibonacciJavascript"])(15));
timed("wasm factorial", () => Object(_math__WEBPACK_IMPORTED_MODULE_1__["factorial"])(1500));
timed("js factorial", () => Object(_math__WEBPACK_IMPORTED_MODULE_1__["factorialJavascript"])(1500));
timed("wasm fibonacci", () => Object(_math__WEBPACK_IMPORTED_MODULE_1__["fibonacci"])(22));
timed("js fibonacci", () => Object(_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 ***!
\******************/
/*! export add [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_require__.v, __webpack_require__ */
/***/ (function(module, __unusedexports, __webpack_require__) {
module.exports = __webpack_require__.v(module.i)
/***/ }),
/* 2 */
/*!*****************!*\
!*** ./math.js ***!
\*****************/
/*! export add [provided] [no usage info] [missing usage info prevents renaming] */
/*! export factorial [provided] [no usage info] [missing usage info prevents renaming] */
/*! export factorialJavascript [provided] [no usage info] [missing usage info prevents renaming] */
/*! export fibonacci [provided] [no usage info] [missing usage info prevents renaming] */
/*! export fibonacciJavascript [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__.r, __webpack_exports__, module, __webpack_require__, __webpack_require__.d */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* 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);
module.exports = Promise.all([_add_wasm__WEBPACK_IMPORTED_MODULE_0__, _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__, _fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__]).then(function([_add_wasm__WEBPACK_IMPORTED_MODULE_0__, _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__, _fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__]) {
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "add", function() { return _add_wasm__WEBPACK_IMPORTED_MODULE_0__["add"]; });
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "factorial", function() { return _factorial_wasm__WEBPACK_IMPORTED_MODULE_1__["factorial"]; });
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "fibonacci", function() { return _fibonacci_wasm__WEBPACK_IMPORTED_MODULE_2__["fibonacci"]; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "factorialJavascript", function() { return factorialJavascript; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "fibonacciJavascript", function() { return fibonacciJavascript; });
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 ***!
\************************/
/*! export factorial [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_require__.v, __webpack_require__ */
/***/ (function(module, __unusedexports, __webpack_require__) {
module.exports = __webpack_require__.v(module.i)
/***/ }),
/* 4 */
/*!************************!*\
!*** ./fibonacci.wasm ***!
\************************/
/*! export fibonacci [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_require__.v, __webpack_require__ */
/***/ (function(module, __unusedexports, __webpack_require__) {
module.exports = __webpack_require__.v(module.i)
/***/ })
/******/ ],function(__webpack_require__) { /* webpackRuntimeModules */ });
/******/ function(__webpack_require__) { // webpackRuntimeModules
/******/ "use strict";
/******/
/******/ /* webpack/runtime/make namespace object */
/******/ !function() {
/******/ // define __esModule on exports
/******/ __webpack_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/ }();
/******/
/******/ /* webpack/runtime/define property getter */
/******/ !function() {
/******/ // define getter function for harmony exports
/******/ var hasOwnProperty = Object.prototype.hasOwnProperty;
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!hasOwnProperty.call(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/ }();
/******/
/******/ /* webpack/runtime/publicPath */
/******/ !function() {
/******/ __webpack_require__.p = "dist/";
/******/ }();
/******/
/******/ /* webpack/runtime/wasm chunk loading */
/******/ !function() {
/******/ __webpack_require__.v = function(wasmModuleId, importsObj) {
/******/ var req = fetch(__webpack_require__.p + "" + {"1":"216fd3b2e2c26ba17d6a","3":"ce408c5c3fbf4bafc915","4":"edf8dce07bda763a8ce8"}[wasmModuleId] + ".wasm");
/******/ if(typeof WebAssembly.instantiateStreaming === 'function') {
/******/ return WebAssembly.instantiateStreaming(req, importsObj)
/******/ .then(function(res) { return res.instance.exports; });
/******/ }
/******/ return req
/******/ .then(function(x) { return x.arrayBuffer(); })
/******/ .then(function(bytes) { return WebAssembly.instantiate(bytes, importsObj); })
/******/ .then(function(res) { return res.instance.exports; });
/******/ };
/******/ }();
/******/
/******/ }
);Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-alpha.14
Asset Size Chunks Chunk Names
216fd3b2e2c26ba17d6a.wasm 41 bytes {179} [emitted] main
ce408c5c3fbf4bafc915.wasm 62 bytes {179} [emitted] main
edf8dce07bda763a8ce8.wasm 67 bytes {179} [emitted] main
output.js 8.9 KiB {179} [emitted] main
Entrypoint main = output.js 216fd3b2e2c26ba17d6a.wasm ce408c5c3fbf4bafc915.wasm edf8dce07bda763a8ce8.wasm
chunk {179} output.js, 216fd3b2e2c26ba17d6a.wasm, ce408c5c3fbf4bafc915.wasm, edf8dce07bda763a8ce8.wasm (main) 1.3 KiB (javascript) 170 bytes (webassembly) 1.16 KiB (runtime) [entry] [rendered]
> ./example.js main
[0] ./example.js 761 bytes {179} [built]
[no exports]
[used exports unknown]
entry ./example.js main
[1] ./add.wasm 50 bytes (javascript) 41 bytes (webassembly) {179} [built]
[exports: add]
[used exports unknown]
harmony side effect evaluation ./add.wasm [0] ./example.js 1:0-39
harmony import specifier ./add.wasm [0] ./example.js 4:12-15
harmony side effect evaluation ./add.wasm [2] ./math.js 1:0-39
harmony export imported specifier ./add.wasm [2] ./math.js 5:0-37
[2] ./math.js 418 bytes {179} [built]
[exports: add, factorial, factorialJavascript, fibonacci, fibonacciJavascript]
[used exports unknown]
harmony side effect evaluation ./math [0] ./example.js 2:0-110
harmony import specifier ./math [0] ./example.js 5:12-19
harmony import specifier ./math [0] ./example.js 6:12-21
harmony import specifier ./math [0] ./example.js 7:12-31
harmony import specifier ./math [0] ./example.js 8:12-21
harmony import specifier ./math [0] ./example.js 9:12-31
harmony import specifier ./math [0] ./example.js 10:30-39
harmony import specifier ./math [0] ./example.js 11:28-47
harmony import specifier ./math [0] ./example.js 12:30-39
harmony import specifier ./math [0] ./example.js 13:28-47
[3] ./factorial.wasm 50 bytes (javascript) 62 bytes (webassembly) {179} [built]
[exports: factorial]
[used exports unknown]
harmony side effect evaluation ./factorial.wasm [2] ./math.js 2:0-51
harmony export imported specifier ./factorial.wasm [2] ./math.js 5:0-37
[4] ./fibonacci.wasm 50 bytes (javascript) 67 bytes (webassembly) {179} [built]
[exports: fibonacci]
[used exports unknown]
harmony side effect evaluation ./fibonacci.wasm [2] ./math.js 3:0-51
harmony export imported specifier ./fibonacci.wasm [2] ./math.js 5:0-37
+ 4 hidden chunk modules
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-alpha.14
Asset Size Chunks Chunk Names
6d518704ecb4aa16ea4e.wasm 62 bytes {179} [emitted] main
9099c5b3bb53a85154d5.wasm 41 bytes {179} [emitted] main
b7e9245ccbc6eb4c52c9.wasm 67 bytes {179} [emitted] main
output.js 2 KiB {179} [emitted] main
Entrypoint main = output.js 6d518704ecb4aa16ea4e.wasm 9099c5b3bb53a85154d5.wasm b7e9245ccbc6eb4c52c9.wasm
chunk {179} output.js, 6d518704ecb4aa16ea4e.wasm, 9099c5b3bb53a85154d5.wasm, b7e9245ccbc6eb4c52c9.wasm (main) 1.3 KiB (javascript) 170 bytes (webassembly) 1.17 KiB (runtime) [entry] [rendered]
> ./example.js main
[78] ./factorial.wasm 50 bytes (javascript) 62 bytes (webassembly) {179} [built]
[exports: factorial]
harmony side effect evaluation ./factorial.wasm [451] ./math.js 2:0-51
harmony export imported specifier ./factorial.wasm [451] ./math.js 5:0-37
[144] ./example.js 761 bytes {179} [built]
[no exports]
entry ./example.js main
[451] ./math.js 418 bytes {179} [built]
[exports: add, factorial, factorialJavascript, fibonacci, fibonacciJavascript]
[all exports used]
harmony side effect evaluation ./math [144] ./example.js 2:0-110
harmony import specifier ./math [144] ./example.js 5:12-19
harmony import specifier ./math [144] ./example.js 6:12-21
harmony import specifier ./math [144] ./example.js 7:12-31
harmony import specifier ./math [144] ./example.js 8:12-21
harmony import specifier ./math [144] ./example.js 9:12-31
harmony import specifier ./math [144] ./example.js 10:30-39
harmony import specifier ./math [144] ./example.js 11:28-47
harmony import specifier ./math [144] ./example.js 12:30-39
harmony import specifier ./math [144] ./example.js 13:28-47
[461] ./add.wasm 50 bytes (javascript) 41 bytes (webassembly) {179} [built]
[exports: add]
harmony side effect evaluation ./add.wasm [144] ./example.js 1:0-39
harmony import specifier ./add.wasm [144] ./example.js 4:12-15
harmony side effect evaluation ./add.wasm [451] ./math.js 1:0-39
harmony export imported specifier ./add.wasm [451] ./math.js 5:0-37
[605] ./fibonacci.wasm 50 bytes (javascript) 67 bytes (webassembly) {179} [built]
[exports: fibonacci]
harmony side effect evaluation ./fibonacci.wasm [451] ./math.js 3:0-51
harmony export imported specifier ./fibonacci.wasm [451] ./math.js 5:0-37
+ 4 hidden chunk modules