webpack/examples/asset-advanced/README.md

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This example shows the usage of the asset module type with asset generator options customization.
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Files can be imported similar to other modules without file-loader or url-loader.
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# example.js
```javascript
import svg from "./images/file.svg";
const container = document.createElement("div");
Object.assign(container.style, {
display: "flex",
justifyContent: "center"
});
document.body.appendChild(container);
function createImageElement(title, src) {
const div = document.createElement("div");
div.style.textAlign = "center";
const h2 = document.createElement("h2");
h2.textContent = title;
div.appendChild(h2);
const img = document.createElement("img");
img.setAttribute("src", src);
img.setAttribute("width", "150");
div.appendChild(img);
container.appendChild(div);
}
[svg].forEach(src => {
createImageElement(src.split(".").pop(), src);
});
```
# webpack.config.js
```javascript
const svgToMiniDataURI = require("mini-svg-data-uri");
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module.exports = {
output: {
assetModuleFilename: "images/[hash][ext]"
},
module: {
rules: [
{
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test: /\.(png|jpg)$/,
type: "asset"
},
{
test: /\.svg$/,
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type: "asset",
generator: {
dataUrl: content => {
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if (typeof content !== "string") {
content = content.toString();
}
return svgToMiniDataURI(content);
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}
}
}
]
},
experiments: {
asset: true
}
};
```
# js/output.js
```javascript
/******/ (() => { // webpackBootstrap
/******/ "use strict";
/******/ var __webpack_modules__ = ([
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/* 0 */,
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/* 1 */
/*!*************************!*\
!*** ./images/file.svg ***!
\*************************/
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/*! default exports */
/*! exports [not provided] [maybe used (runtime-defined)] */
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/*! runtime requirements: module */
/***/ ((module) => {
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module.exports = "data:image/svg+xml,%3csvg xmlns='http://www.w3.or...3c/svg%3e";
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/***/ })
/******/ ]);
```
<details><summary><code>/* webpack runtime code */</code></summary>
``` js
/************************************************************************/
/******/ // 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] = {
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/******/ // no module.id needed
/******/ // no module.loaded needed
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/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
```
</details>
``` js
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(() => {
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! namespace exports */
/*! exports [not provided] [unused] */
/*! runtime requirements: __webpack_require__ */
/* harmony import */ var _images_file_svg__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./images/file.svg */ 1);
const container = document.createElement("div");
Object.assign(container.style, {
display: "flex",
justifyContent: "center"
});
document.body.appendChild(container);
function createImageElement(title, src) {
const div = document.createElement("div");
div.style.textAlign = "center";
const h2 = document.createElement("h2");
h2.textContent = title;
div.appendChild(h2);
const img = document.createElement("img");
img.setAttribute("src", src);
img.setAttribute("width", "150");
div.appendChild(img);
container.appendChild(div);
}
[_images_file_svg__WEBPACK_IMPORTED_MODULE_0__].forEach(src => {
createImageElement(src.split(".").pop(), src);
});
})();
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/******/ })()
;
```
# Info
## webpack output
```
Hash: 0a1b2c3d4e5f6a7b8c9d
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Version: webpack 5.0.0-beta.16
Asset Size
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output.js 3.02 KiB [emitted] [name: main]
Entrypoint main = output.js
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chunk output.js (main) 1.54 KiB [entry] [rendered]
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> ./example.js main
./example.js 658 bytes [built]
[no exports]
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[no exports used]
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entry ./example.js main
./images/file.svg 915 bytes [built]
[no exports]
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harmony side effect evaluation ./images/file.svg ./example.js 1:0-36
harmony import specifier ./images/file.svg ./example.js 26:1-4
```