d2d8053446
|
||
|---|---|---|
| .. | ||
| pkg | ||
| README.md | ||
| build.js | ||
| example.js | ||
| index.html | ||
| template.md | ||
| test.filter.js | ||
| webpack.config.js | ||
README.md
This is a simple example that shows the usage of an ES module packaging around a Rust module, built by wasm-pack.
The ES module can be imported like other async modules with import or import().
When importing, the underlying WebAssembly module is downloaded and instantiated in a streaming way.
example.js
import { greeting } from "./pkg";
document.write(greeting('Bob'));
dist/output.js
/******/ (() => { // 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__.a, __webpack_require__.* */
/***/ ((module, __webpack_exports__, __webpack_require__) => {
__webpack_require__.a(module, async (__webpack_handle_async_dependencies__, __webpack_async_result__) => { try {
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _pkg__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./pkg */ 1);
var __webpack_async_dependencies__ = __webpack_handle_async_dependencies__([_pkg__WEBPACK_IMPORTED_MODULE_0__]);
_pkg__WEBPACK_IMPORTED_MODULE_0__ = (__webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__)[0];
document.write((0,_pkg__WEBPACK_IMPORTED_MODULE_0__.greeting)('Bob'));
__webpack_async_result__();
} catch(e) { __webpack_async_result__(e); } });
/***/ }),
/* 1 */
/*!***************************!*\
!*** ./pkg/hi_wasm_bg.js ***!
\***************************/
/*! namespace exports */
/*! export greeting [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__, __webpack_require__.r, __webpack_exports__, module, __webpack_require__.a, __webpack_require__.d, __webpack_require__.* */
/***/ ((__webpack_module__, __webpack_exports__, __webpack_require__) => {
__webpack_require__.a(__webpack_module__, async (__webpack_handle_async_dependencies__, __webpack_async_result__) => { try {
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */ greeting: () => (/* binding */ greeting)
/* harmony export */ });
/* harmony import */ var _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./hi_wasm_bg.wasm */ 2);
var __webpack_async_dependencies__ = __webpack_handle_async_dependencies__([_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__]);
_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = (__webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__)[0];
let WASM_VECTOR_LEN = 0;
let cachegetUint8Memory0 = null;
function getUint8Memory0() {
if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.memory.buffer) {
cachegetUint8Memory0 = new Uint8Array(_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.memory.buffer);
}
return cachegetUint8Memory0;
}
const lTextEncoder = typeof TextEncoder === 'undefined' ? (0, module.require)('util').TextEncoder : TextEncoder;
let cachedTextEncoder = new lTextEncoder('utf-8');
const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
? function (arg, view) {
return cachedTextEncoder.encodeInto(arg, view);
}
: function (arg, view) {
const buf = cachedTextEncoder.encode(arg);
view.set(buf);
return {
read: arg.length,
written: buf.length
};
});
function passStringToWasm0(arg, malloc, realloc) {
if (realloc === undefined) {
const buf = cachedTextEncoder.encode(arg);
const ptr = malloc(buf.length);
getUint8Memory0().subarray(ptr, ptr + buf.length).set(buf);
WASM_VECTOR_LEN = buf.length;
return ptr;
}
let len = arg.length;
let ptr = malloc(len);
const mem = getUint8Memory0();
let offset = 0;
for (; offset < len; offset++) {
const code = arg.charCodeAt(offset);
if (code > 0x7F) break;
mem[ptr + offset] = code;
}
if (offset !== len) {
if (offset !== 0) {
arg = arg.slice(offset);
}
ptr = realloc(ptr, len, len = offset + arg.length * 3);
const view = getUint8Memory0().subarray(ptr + offset, ptr + len);
const ret = encodeString(arg, view);
offset += ret.written;
}
WASM_VECTOR_LEN = offset;
return ptr;
}
let cachegetInt32Memory0 = null;
function getInt32Memory0() {
if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.memory.buffer) {
cachegetInt32Memory0 = new Int32Array(_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.memory.buffer);
}
return cachegetInt32Memory0;
}
const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
cachedTextDecoder.decode();
function getStringFromWasm0(ptr, len) {
return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
}
/**
* @param {string} name
* @returns {string}
*/
function greeting(name) {
try {
const retptr = _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.__wbindgen_add_to_stack_pointer(-16);
var ptr0 = passStringToWasm0(name, _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.__wbindgen_malloc, _hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.__wbindgen_realloc);
var len0 = WASM_VECTOR_LEN;
_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.greeting(retptr, ptr0, len0);
var r0 = getInt32Memory0()[retptr / 4 + 0];
var r1 = getInt32Memory0()[retptr / 4 + 1];
return getStringFromWasm0(r0, r1);
} finally {
_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.__wbindgen_add_to_stack_pointer(16);
_hi_wasm_bg_wasm__WEBPACK_IMPORTED_MODULE_0__.__wbindgen_free(r0, r1);
}
}
__webpack_async_result__();
} catch(e) { __webpack_async_result__(e); } });
/***/ }),
/* 2 */
/*!*****************************!*\
!*** ./pkg/hi_wasm_bg.wasm ***!
\*****************************/
/*! namespace exports */
/*! export __wbindgen_add_to_stack_pointer [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! export __wbindgen_free [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! export __wbindgen_malloc [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! export __wbindgen_realloc [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! export greeting [provided] [no usage info] [provision prevents renaming (no use info)] */
/*! export memory [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, "ffe21e855d11d22ab54f");
/***/ })
/******/ ]);
/* webpack runtime code */
/************************************************************************/
/******/ // The module cache
/******/ var __webpack_module_cache__ = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ var cachedModule = __webpack_module_cache__[moduleId];
/******/ if (cachedModule !== undefined) {
/******/ return cachedModule.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/async module */
/******/ (() => {
/******/ var webpackQueues = typeof Symbol === "function" ? Symbol("webpack queues") : "__webpack_queues__";
/******/ var webpackExports = typeof Symbol === "function" ? Symbol("webpack exports") : "__webpack_exports__";
/******/ var webpackError = typeof Symbol === "function" ? Symbol("webpack error") : "__webpack_error__";
/******/ var resolveQueue = (queue) => {
/******/ if(queue && queue.d < 1) {
/******/ queue.d = 1;
/******/ queue.forEach((fn) => (fn.r--));
/******/ queue.forEach((fn) => (fn.r-- ? fn.r++ : fn()));
/******/ }
/******/ }
/******/ var wrapDeps = (deps) => (deps.map((dep) => {
/******/ if(dep !== null && typeof dep === "object") {
/******/ if(dep[webpackQueues]) return dep;
/******/ if(dep.then) {
/******/ var queue = [];
/******/ queue.d = 0;
/******/ dep.then((r) => {
/******/ obj[webpackExports] = r;
/******/ resolveQueue(queue);
/******/ }, (e) => {
/******/ obj[webpackError] = e;
/******/ resolveQueue(queue);
/******/ });
/******/ var obj = {};
/******/ obj[webpackQueues] = (fn) => (fn(queue));
/******/ return obj;
/******/ }
/******/ }
/******/ var ret = {};
/******/ ret[webpackQueues] = x => {};
/******/ ret[webpackExports] = dep;
/******/ return ret;
/******/ }));
/******/ __webpack_require__.a = (module, body, hasAwait) => {
/******/ var queue;
/******/ hasAwait && ((queue = []).d = -1);
/******/ var depQueues = new Set();
/******/ var exports = module.exports;
/******/ var currentDeps;
/******/ var outerResolve;
/******/ var reject;
/******/ var promise = new Promise((resolve, rej) => {
/******/ reject = rej;
/******/ outerResolve = resolve;
/******/ });
/******/ promise[webpackExports] = exports;
/******/ promise[webpackQueues] = (fn) => (queue && fn(queue), depQueues.forEach(fn), promise["catch"](x => {}));
/******/ module.exports = promise;
/******/ body((deps) => {
/******/ currentDeps = wrapDeps(deps);
/******/ var fn;
/******/ var getResult = () => (currentDeps.map((d) => {
/******/ if(d[webpackError]) throw d[webpackError];
/******/ return d[webpackExports];
/******/ }))
/******/ var promise = new Promise((resolve) => {
/******/ fn = () => (resolve(getResult));
/******/ fn.r = 0;
/******/ var fnQueue = (q) => (q !== queue && !depQueues.has(q) && (depQueues.add(q), q && !q.d && (fn.r++, q.push(fn))));
/******/ currentDeps.map((dep) => (dep[webpackQueues](fnQueue)));
/******/ });
/******/ return fn.r ? promise : getResult();
/******/ }, (err) => ((err ? reject(promise[webpackError] = err) : outerResolve(exports)), resolveQueue(queue)));
/******/ queue && queue.d < 0 && (queue.d = 0);
/******/ };
/******/ })();
/******/
/******/ /* 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/wasm loading */
/******/ (() => {
/******/ __webpack_require__.v = (exports, wasmModuleId, wasmModuleHash, importsObj) => {
/******/ var req = fetch(__webpack_require__.p + "" + wasmModuleHash + ".wasm");
/******/ var fallback = () => (req
/******/ .then((x) => (x.arrayBuffer()))
/******/ .then((bytes) => (WebAssembly.instantiate(bytes, importsObj)))
/******/ .then((res) => (Object.assign(exports, res.instance.exports))));
/******/ return req.then((res) => {
/******/ if (typeof WebAssembly.instantiateStreaming === "function") {
/******/ return WebAssembly.instantiateStreaming(res, importsObj)
/******/ .then(
/******/ (res) => (Object.assign(exports, res.instance.exports)),
/******/ (e) => {
/******/ if(res.headers.get("Content-Type") !== "application/wasm") {
/******/ console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
/******/ return fallback();
/******/ }
/******/ throw e;
/******/ }
/******/ );
/******/ }
/******/ return fallback();
/******/ });
/******/ };
/******/ })();
/******/
/******/ /* webpack/runtime/publicPath */
/******/ (() => {
/******/ __webpack_require__.p = "dist/";
/******/ })();
/******/
/************************************************************************/
/******/
/******/ // startup
/******/ // Load entry module and return exports
/******/ // This entry module used 'module' so it can't be inlined
/******/ var __webpack_exports__ = __webpack_require__(0);
/******/
/******/ })()
;
Info
Unoptimized
asset ffe21e855d11d22ab54f.wasm 14.8 KiB [emitted] [immutable] (auxiliary name: main)
asset output.js 13.4 KiB [emitted] (name: main)
chunk (runtime: main) output.js (main) 3.03 KiB (javascript) 14.8 KiB (webassembly) 3.68 KiB (runtime) [entry] [rendered]
> ./example.js main
runtime modules 3.68 KiB 6 modules
dependent modules 2.97 KiB (javascript) 14.8 KiB (webassembly) [dependent] 2 modules
./example.js 69 bytes [built] [code generated]
[no exports]
[used exports unknown]
entry ./example.js main
webpack 5.90.0 compiled successfully
Production mode
asset f7199313c1125f249cd6.wasm 14.8 KiB [emitted] [immutable] (auxiliary name: main)
asset output.js 3.41 KiB [emitted] [minimized] (name: main)
chunk (runtime: main) output.js (main) 3.03 KiB (javascript) 14.8 KiB (webassembly) 3.42 KiB (runtime) [entry] [rendered]
> ./example.js main
runtime modules 3.42 KiB 5 modules
dependent modules 2.97 KiB (javascript) 14.8 KiB (webassembly) [dependent] 2 modules
./example.js 69 bytes [built] [code generated]
[no exports]
[no exports used]
entry ./example.js main
webpack 5.90.0 compiled successfully