How do you use the ui.frontend module with NPM to add JavaScript libraries to your AEM Site
So in my AEM Sites project, I want to use the ui.frontend module to add the JavaScript files for datatables.net by using npm.
So in the documentation link for installing the JavaScript and CSS files for datatables.net is
https://datatables.net/download/index
To install it using NPM the command is
npm install --save datatables.net-dt
So in my AEM projects ui.frontend folder I ran the command
Which updated the file package.json to contain the datatables.net dependency
e.g
"dependencies": {
"datatables.net-dt": "^1.11.3"
}
The full package.json file generated is
{
"name": "aem-maven-archetype",
"version": "1.0.0",
"description": "Generates an AEM Frontend project with Webpack",
"repository": {
"type": "git",
"url": "https://github.com/adobe/aem-project-archetype"
},
"private": true,
"main": "src/main/webpack/site/main.ts",
"license": "SEE LICENSE IN LICENSE.txt",
"scripts": {
"dev": "webpack -d --env dev --config ./webpack.dev.js && clientlib --verbose",
"prod": "webpack -p --config ./webpack.prod.js && clientlib --verbose",
"start": "webpack-dev-server --open --config ./webpack.dev.js",
"sync": "aemsync -d -p ../ui.apps/src/main/content",
"watch": "webpack-dev-server --config ./webpack.dev.js --env.writeToDisk & watch 'clientlib' ./dist & aemsync -w ../ui.apps/src/main/content"
},
"devDependencies": {
"@babel/core": "^7.0.0",
"@babel/plugin-proposal-class-properties": "^7.3.3",
"@babel/plugin-proposal-object-rest-spread": "^7.3.2",
"@typescript-eslint/eslint-plugin": "^2.14.0",
"@typescript-eslint/parser": "^2.14.0",
"acorn": "^6.1.0",
"aem-clientlib-generator": "^1.4.3",
"aemsync": "^4.0.1",
"autoprefixer": "^9.2.1",
"browserslist": "^4.2.1",
"clean-webpack-plugin": "^3.0.0",
"copy-webpack-plugin": "^5.0.4",
"css-loader": "^3.0.0",
"cssnano": "^4.1.10",
"eslint": "^6.8.0",
"eslint-loader": "^3.0.3",
"glob-import-loader": "^1.1.4",
"html-webpack-plugin": "^3.2.0",
"mini-css-extract-plugin": "^0.4.4",
"optimize-css-assets-webpack-plugin": "^5.0.1",
"postcss-loader": "^3.0.0",
"sass": "^1.17.2",
"sass-loader": "^7.1.0",
"source-map-loader": "^0.2.4",
"style-loader": "^0.14.1",
"terser-webpack-plugin": "^1.4.1",
"ts-loader": "^5.3.3",
"tsconfig-paths-webpack-plugin": "^3.2.0",
"typescript": "^3.3.3333",
"watch": "^1.0.2",
"webpack": "^4.27.1",
"webpack-cli": "^3.1.2",
"webpack-dev-server": "^3.9.0",
"webpack-merge": "^4.2.1"
},
"dependencies": {
"datatables.net-dt": "^1.11.3"
},
"browserslist": [
"last 2 version",
"> 1%"
]
}
So I then ran the NPM command
npm run dev to build the CSS and JavaScript into apps/<my app>/clientlibs/clientlib-site/
when I look at the site.js file that is generated I expected it to contain the JavaScript for the datatabes.net, but it does not.
What steps am I missing?
When I put
var $ = require( 'jquery' ); var dt = require( 'datatables.net' )();
in to the file src/main/webpack/site/main.ts
and then run the command
npm run dev
I get the errors
4:5 warning '$' is assigned a value but never used @Deleted Account-eslint/no-unused-vars
4:9 error Require statement not part of import statement @Deleted Account-eslint/no-var-requires
5:5 warning 'dt' is assigned a value but never used @Deleted Account-eslint/no-unused-vars
5:10 error Require statement not part of import statement @Deleted Account-eslint/no-var-requires
✖ 4 problems (2 errors, 2 warnings)
I don't get the errors when I put
require( 'jquery' );
require( 'datatables.net' );
or
import "jquery";
import "datatables.net";
and the file src/main/content/jcr_root/apps/<my app>/clientlibs/clientlib-site/js/site.js
does seem to have the datatables.net JavaScript code in it.
But it doesn't seem to used in any of my components that use datatables.net
The client library for the clientlib-site has .content.xml file value
<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
jcr:primaryType="cq:ClientLibraryFolder"
categories="[frontend.site]"
dependencies="[frontend.dependencies]"
cssProcessor="[default:none,min:none]"
jsProcessor="[default:none,min:none]"
allowProxy="{Boolean}true"/>
The components that use datatables.net have the clientlib .content.xml file values
<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0"
jcr:primaryType="cq:ClientLibraryFolder"
allowProxy="{Boolean}true"
categories="frontend.components"/>
The client library clientlib-base have the .content.xml file value
<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
jcr:primaryType="cq:ClientLibraryFolder"
allowProxy="{Boolean}true"
categories="[frontend.base]"
embed="[frontend.components,core.wcm.components.accordion.v1,core.wcm.components.tabs.v1,core.wcm.components.carousel.v1,core.wcm.components.image.v2,core.wcm.components.breadcrumb.v2,core.wcm.components.search.v1,core.wcm.components.form.text.v2,core.wcm.components.pdfviewer.v1,core.wcm.components.commons.datalayer.v1,frontend.grid]"/>
Hi,
This is due to either eslint rule or ui.frontend.general/.eslintrc.js or typescript rule ui.frontend.general/tsconfig.json
which can be disabled to not check unused.
Arun Patidar
I updated the following file ui.frontend/.eslintrc.js
and added the following entry
"@typescript-eslint/no-var-requires": 0,
Contents of the whole file
module.exports = {
parser: '@typescript-eslint/parser', // Specifies the ESLint parser
extends: [
'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
],
parserOptions: {
ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
sourceType: 'module', // Allows for the use of imports
},
rules: {
"curly": 1,
"@typescript-eslint/no-var-requires": 0,
"@typescript-eslint/explicit-function-return-type": [0],
"@typescript-eslint/no-explicit-any": [0],
"ordered-imports": [0],
"object-literal-sort-keys": [0],
"max-len": [1, 120],
"new-parens": 1,
"no-bitwise": 1,
"no-cond-assign": 1,
"no-trailing-spaces": 0,
"eol-last": 1,
"func-style": ["error", "declaration", { "allowArrowFunctions": true }],
"semi": 1,
"no-var": 0
},
};
Which now allows the entries in the file
ui.frontend/src/main/webpack/site/main.ts
// Stylesheets import "./main.scss"; // Javascript or Typescript import "./**/*.js"; import "./**/*.ts"; // Include jquery and datatables.net to site.js var $ = require( 'jquery' ); var dt = require( 'datatables.net' )( window, $ );
Which generate the Javascript from jQuery and datatales.net into the file
ui.apps/src/main/content/jcr_root/apps/frontend/clientlibs/clientlib-site/js/site.js
When I run the command
mvn clean install -PautoInstallSinglePackage
to install the package from the root folder to my AEM Author instance.
The component that I uses datatables.net still has the error
I posted this question internally at Adobe, and the feedback was
The advantage of using the ui.frontend module is to then be able to reference these libraries within scripts within the ui.frontend module and then webpack will intelligently build/compile your css/js artifacts. If you are just using jQuery, Datables statically, i'm not sure there is a real advantage of jamming them in the ui.frontend module only to output them as clientlibrary later.
So the ui.frontend module should not be used to add 3rd party JavaScript libraries to be generated to the
/clientlibs/clientlib-site/js/site.js
instead just create a client library the old fashion way.
e.g.
and then reference this client library as an embed entry in the clientlib-base
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