15 KiB
15 KiB
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.
example.js
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)
}
math.js
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);
}
dist/output.js
/******/ (() => { // webpackBootstrap
/******/ var __webpack_modules__ = ([
/* 0 */
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__, __webpack_require__.r, __webpack_exports__, module, __webpack_require__.* */
/***/ ((module, __webpack_exports__, __webpack_require__) => {
"use strict";
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 ***!
\******************/
/*! export add [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, 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__, __webpack_exports__, __webpack_require__.d, __webpack_require__.r, module, __webpack_require__.* */
/***/ ((module, __webpack_exports__, __webpack_require__) => {
"use strict";
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 ***!
\************************/
/*! export factorial [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, module.i)
/***/ }),
/* 4 */
/*!************************!*\
!*** ./fibonacci.wasm ***!
\************************/
/*! export fibonacci [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: module, __webpack_exports__, __webpack_require__.v, __webpack_require__.* */
/***/ ((module, exports, __webpack_require__) => {
module.exports = __webpack_require__.v(exports, module.i)
/***/ })
/******/ ]);
/* 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] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
/******/ /* webpack/runtime/define property getters */
/******/ !function() {
/******/ // define getter functions for harmony exports
/******/ var hasOwnProperty = Object.prototype.hasOwnProperty;
/******/ __webpack_require__.d = (exports, definition) => {
/******/ for(var key in definition) {
/******/ if(hasOwnProperty.call(definition, key) && !hasOwnProperty.call(exports, key)) {
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
/******/ }
/******/ }
/******/ };
/******/ }();
/******/
/******/ /* webpack/runtime/make namespace object */
/******/ !function() {
/******/ // 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 */
/******/ !function() {
/******/ __webpack_require__.p = "dist/";
/******/ }();
/******/
/******/ /* webpack/runtime/wasm chunk loading */
/******/ !function() {
/******/ __webpack_require__.v = function(exports, wasmModuleId, importsObj) {
/******/ var req = fetch(__webpack_require__.p + "" + {"1":"3ee1e22348cddba39f35","3":"04913f0d8c9a5aaf9873","4":"4877696a77609bcaa166"}[wasmModuleId] + ".wasm");
/******/ if(typeof WebAssembly.instantiateStreaming === 'function') {
/******/ return WebAssembly.instantiateStreaming(req, importsObj)
/******/ .then(function(res) { return Object.assign(exports, res.instance.exports); });
/******/ }
/******/ return req
/******/ .then(function(x) { return x.arrayBuffer(); })
/******/ .then(function(bytes) { return WebAssembly.instantiate(bytes, importsObj); })
/******/ .then(function(res) { return Object.assign(exports, res.instance.exports); });
/******/ };
/******/ }();
/******/
/************************************************************************/
/******/ // startup
/******/ // Load entry module
/******/ __webpack_require__(0);
/******/ // This entry module used 'module' so it can't be inlined
/******/ })()
;
Info
Unoptimized
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-beta.6
Asset Size
04913f0d8c9a5aaf9873.wasm 62 bytes [emitted] [immutable] [name: (main)]
3ee1e22348cddba39f35.wasm 41 bytes [emitted] [immutable] [name: (main)]
4877696a77609bcaa166.wasm 67 bytes [emitted] [immutable] [name: (main)]
output.js 8.82 KiB [emitted] [name: main]
Entrypoint main = output.js (04913f0d8c9a5aaf9873.wasm 3ee1e22348cddba39f35.wasm 4877696a77609bcaa166.wasm)
chunk output.js (main) 1.3 KiB (javascript) 170 bytes (webassembly) 1.29 KiB (runtime) [entry] [rendered]
> ./example.js main
./add.wasm 50 bytes (javascript) 41 bytes (webassembly) [built]
[exports: add]
[used exports unknown]
harmony side effect evaluation ./add.wasm ./example.js 1:0-39
harmony import specifier ./add.wasm ./example.js 4:12-15
harmony side effect evaluation ./add.wasm ./math.js 1:0-39
harmony export imported specifier ./add.wasm ./math.js 5:0-37
./example.js 761 bytes [built]
[no exports]
[used exports unknown]
entry ./example.js main
./factorial.wasm 50 bytes (javascript) 62 bytes (webassembly) [built]
[exports: factorial]
[used exports unknown]
harmony side effect evaluation ./factorial.wasm ./math.js 2:0-51
harmony export imported specifier ./factorial.wasm ./math.js 5:0-37
./fibonacci.wasm 50 bytes (javascript) 67 bytes (webassembly) [built]
[exports: fibonacci]
[used exports unknown]
harmony side effect evaluation ./fibonacci.wasm ./math.js 3:0-51
harmony export imported specifier ./fibonacci.wasm ./math.js 5:0-37
./math.js 418 bytes [built]
[exports: add, factorial, factorialJavascript, fibonacci, fibonacciJavascript]
[used exports unknown]
harmony side effect evaluation ./math ./example.js 2:0-110
harmony import specifier ./math ./example.js 5:12-19
harmony import specifier ./math ./example.js 6:12-21
harmony import specifier ./math ./example.js 7:12-31
harmony import specifier ./math ./example.js 8:12-21
harmony import specifier ./math ./example.js 9:12-31
harmony import specifier ./math ./example.js 10:30-39
harmony import specifier ./math ./example.js 11:28-47
harmony import specifier ./math ./example.js 12:30-39
harmony import specifier ./math ./example.js 13:28-47
+ 4 hidden chunk modules
Production mode
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-beta.6
Asset Size
5ba3e3921117e9d828f5.wasm 67 bytes [emitted] [immutable] [name: (main)]
5dd947250fab86306d49.wasm 62 bytes [emitted] [immutable] [name: (main)]
6f6c0ffc52ce3a45ff7e.wasm 41 bytes [emitted] [immutable] [name: (main)]
output.js 1.7 KiB [emitted] [name: main]
Entrypoint main = output.js (5ba3e3921117e9d828f5.wasm 5dd947250fab86306d49.wasm 6f6c0ffc52ce3a45ff7e.wasm)
chunk output.js (main) 1.3 KiB (javascript) 170 bytes (webassembly) 1.03 KiB (runtime) [entry] [rendered]
> ./example.js main
./add.wasm 50 bytes (javascript) 41 bytes (webassembly) [built]
[exports: add]
[all exports used]
harmony side effect evaluation ./add.wasm ./example.js 1:0-39
harmony import specifier ./add.wasm ./example.js 4:12-15
harmony side effect evaluation ./add.wasm ./math.js 1:0-39
harmony export imported specifier ./add.wasm ./math.js 5:0-37
./example.js 761 bytes [built]
[no exports]
[no exports used]
entry ./example.js main
./factorial.wasm 50 bytes (javascript) 62 bytes (webassembly) [built]
[exports: factorial]
[all exports used]
harmony side effect evaluation ./factorial.wasm ./math.js 2:0-51
harmony export imported specifier ./factorial.wasm ./math.js 5:0-37
./fibonacci.wasm 50 bytes (javascript) 67 bytes (webassembly) [built]
[exports: fibonacci]
[all exports used]
harmony side effect evaluation ./fibonacci.wasm ./math.js 3:0-51
harmony export imported specifier ./fibonacci.wasm ./math.js 5:0-37
./math.js 418 bytes [built]
[exports: add, factorial, factorialJavascript, fibonacci, fibonacciJavascript]
[all exports used]
harmony side effect evaluation ./math ./example.js 2:0-110
harmony import specifier ./math ./example.js 5:12-19
harmony import specifier ./math ./example.js 6:12-21
harmony import specifier ./math ./example.js 7:12-31
harmony import specifier ./math ./example.js 8:12-21
harmony import specifier ./math ./example.js 9:12-31
harmony import specifier ./math ./example.js 10:30-39
harmony import specifier ./math ./example.js 11:28-47
harmony import specifier ./math ./example.js 12:30-39
harmony import specifier ./math ./example.js 13:28-47
+ 3 hidden chunk modules