Load CSS from a dynamically imported ES6 module - npm

Question

My project is being built with Webpack via Laravel Mix. I want to dynamically import an ES6 module that itself imports other modules and a stylesheet. Here is the dynamically imported module (loadJQueryTextillate.js):
import style from 'animate.css/animate.css';
import 'letteringjs';
import 'textillate';
style.use();
export default () => {
};
Here is the module that dynamically imports loadJQueryTextillate.js (animatedText.js):
import isInViewport from './isInViewport';
function maybeAnimateText( elem ) {
const $el = $( elem );
let bounding,
el_html,
el_lines,
in_viewport = $el.data( 'in-viewport' ) || false;
const viewport_height = window.innerHeight || document.documentElement.clientHeight;
if ( $el.hasClass( 'opaque' ) ) {
bounding = elem.getBoundingClientRect();
if ( in_viewport && !isInViewport( elem ) && ( bounding.top > viewport_height ) ) { // Element scrolled off screen
in_viewport = false;
$el.removeClass( 'opaque' ).find( 'ul.texts' ).remove().end().text( $.trim( $el.text() ) );
} else if ( isInViewport( elem ) ) {
in_viewport = true;
}
$el.data( 'in-viewport', in_viewport );
return;
} else if ( !isInViewport( elem ) ) {
return;
}
el_html = $el.html();
el_lines = el_html.split( /<br\s*\/?>/ );
$.each( el_lines, function( key, line ) {
el_lines[ key ] = $.trim( line );
} );
el_html = '<span class="line">' + el_lines.join( '</span><span class="line">' ) + '</span>';
import( /* webpackChunkName: "scripts/jQuery.textillate" */ './loadJQueryTextillate' ).then( () => {
$el.html( el_html ).addClass( 'opaque' ).children( '.line' ).textillate( {
in : {
effect : $el.data( 'in-effect' ) || 'fadeInLeft',
delay : $el.data( 'delay' ) || 12,
},
} );
} );
}
export default () => {
const $els = $( '.tlt' );
if ( 0 === $els.length ) {
return false;
}
$els.each( function( index, elem ) {
maybeAnimateText( elem );
} );
return true;
};
Here is the JS entry script (app.js):
window.$ = window.jQuery = require( 'jquery' );
import 'bootstrap';
import checkAnimatedText from './modules/animatedText';
$( window ).on( 'load', () => {
checkAnimatedText();
} );
Finally, here is the Laravel Mix config script (webpack.mix.js):
const mix = require( 'laravel-mix' );
require( 'laravel-mix-versionhash' );
// Public path helper
const publicPath = path => `${mix.config.publicPath}/${path}`;
// Source path helper
const src = path => `resources/assets/${path}`;
// Public Path
mix
.setPublicPath( './dist' )
.setResourceRoot( `/wp-content/themes/magnetar/${mix.config.publicPath}/` )
.webpackConfig( {
module : {
rules : [ {
test : /animate\.css$/,
use : [ {
loader : "style-loader/useable",
}, { loader : "css-loader" } ],
} ],
},
output : { publicPath : mix.config.resourceRoot },
} );
// Browsersync
mix.browserSync( 'magnetar.localhost' );
// Styles
mix.sass( src`styles/app.scss`, 'styles' );
// Assets
mix.copyDirectory( src`images`, publicPath`images` )
.copyDirectory( src`fonts`, publicPath`fonts` );
// JavaScript
mix.js( src`scripts/app.js`, 'scripts' );
//.extract();
// Autoload
/*mix.autoload( {
jquery : [ '$', 'window.jQuery' ],
} );*/
// Source maps when not in production.
mix.sourceMaps( false, 'source-map' );
// Hash and version files in production.
mix.versionHash( { length : 16 } );
Compiler output:
ERROR in ./node_modules/animate.css/animate.css (./node_modules/css-loader??ref--6-1!./node_modules/postcss-loader/src??ref--6-2!./node_modules/style-loader/useable.js!./node_modules/css-loader!./node_modules/animate.css/animate.css)
Module build failed (from ./node_modules/postcss-loader/src/index.js):
SyntaxError
(1:1) Unknown word
> 1 | var refs = 0;
| ^
2 | var dispose;
3 | var content = require("!!../css-loader/index.js!./animate.css");
EDIT: Updated contents of loadJQueryTextillate.js, webpack.mix.js and compiler output.

Answer 1

You can try style-loader/useable to dynamically load css file. In your script code, you should use style.use() to make style useable or use style.unuse() to make style disable.
The following code shows how you should do to use style-loader/useable.
webpack.config.js
{
module: {
rules: [
{
test: /\.css$/,
exclude: /\.useable\.css$/,
use: [
{ loader: "style-loader" },
{ loader: "css-loader" },
],
},
{
test: /\.useable\.css$/,
use: [
{
loader: "style-loader/useable"
},
{ loader: "css-loader" },
],
},
],
},
}
file you want to dynamically load animate.css
import style form './animate.css';
// make aniamte.css useable
style.use();
// make animate.css disable
style.unuse();