Utilizing Grunt with Bootstrap 5 for streamlining and optimizing JavaScript code bundling

Question

Utilizing Grunt with Bootstrap 5 for streamlining and optimizing JavaScript code bundling

After successfully bundling the Bootstrap 5 SCSS files using Grunt, I now want to do the same with the JavaScript files. I am using grunt-contrib-uglify for this task:

uglify: {
    site: {
        options: {
            sourcemap: false
        },
        files: {
            'example/static/example/assets/js/example.min.js': [

                // List of JS files to include
                'node_modules/@popperjs/core/dist/umd/popper.js',
                'node_modules/bootstrap/js/dist/dom/data.js',
                'node_modules/bootstrap/js/dist/dom/event-handler.js',
                // Add more files here

                'example/src/js/**/*.js'
            ]
        }
    },
},

After including the minified JS file in my HTML, I encountered an error in the console:

ReferenceError: bootstrap is not defined

I followed the npm bootstrap 5 starter on Github for reference, including all necessary files, such as the Popper dependency and core JS files. However, I seem to be missing something from the bundle. Here is a link to the starter files on Github: Github Bootstrap 5 npm starter

Bootstrap version: 5.1

Popper version: 2.9.2

Edit: The issue was resolved when using the distributed bundle.

javascript gruntjs bootstrap-5

Answer 1

Answer №1

element, you have the ability to utilize the grunt uglify task in order to achieve the following:

<script>
    var myOffcanvas = document.getElementById('offcanvasExample')
    var bsOffcanvas = Offcanvas(myOffcanvas)
</script>

This script specifically removes the reference to new bootstrap. as it seems that when importing individual component files, Bootstrap is not brought in as a module. Consequently, it is not accessible in the same manner as when included in a bundle. Furthermore, the separate components can still be imported and utilized as functions, much like the Offcanvas example provided. In an update, bootstrap 5 integrates rollup for its javascript bundling process, prompting a look into the 'grunt-rollup' task. A configuration that aligns more closely with the Bootstrap documentation was eventually achieved through the use of the grunt-rollup task with the given setup:

// gruntfile imports
const babel = require("@rollup/plugin-babel").default;
const path = require('path')
const {nodeResolve} = require("@rollup/plugin-node-resolve");

// rollup task
rollup: {
    options: {
        plugins: [
            babel({
                exclude: './node_modules/**',
                babelHelpers: 'bundled',
            }),
            nodeResolve()
        ],
        globals: {
            '@popperjs/core': 'Popper'
        },
        external: ['@popperjs/core'],
        format: 'umd',
        name: 'bootstrap',
    },
    files: {
        src: path.resolve(__dirname, `path/to/bootstrap5/imports/file`),
        dest: path.resolve(__dirname, `path/to/export/file`),
    },
},

The bootstrap imports file structure includes components like Alert, Button, Carousel, Collapse, Dropdown, Modal, Offcanvas, Popover, ScrollSpy, Tab, Toast, and Tooltip. These components can be selectively included in the javascript file to cater to the specific needs of the project.

Answer 2

element, you have the ability to utilize the grunt uglify task in order to achieve the following:

<script>
    var myOffcanvas = document.getElementById('offcanvasExample')
    var bsOffcanvas = Offcanvas(myOffcanvas)
</script>

This script specifically removes the reference to new bootstrap. as it seems that when importing individual component files, Bootstrap is not brought in as a module. Consequently, it is not accessible in the same manner as when included in a bundle. Furthermore, the separate components can still be imported and utilized as functions, much like the Offcanvas example provided. In an update, bootstrap 5 integrates rollup for its javascript bundling process, prompting a look into the 'grunt-rollup' task. A configuration that aligns more closely with the Bootstrap documentation was eventually achieved through the use of the grunt-rollup task with the given setup:

// gruntfile imports
const babel = require("@rollup/plugin-babel").default;
const path = require('path')
const {nodeResolve} = require("@rollup/plugin-node-resolve");

// rollup task
rollup: {
    options: {
        plugins: [
            babel({
                exclude: './node_modules/**',
                babelHelpers: 'bundled',
            }),
            nodeResolve()
        ],
        globals: {
            '@popperjs/core': 'Popper'
        },
        external: ['@popperjs/core'],
        format: 'umd',
        name: 'bootstrap',
    },
    files: {
        src: path.resolve(__dirname, `path/to/bootstrap5/imports/file`),
        dest: path.resolve(__dirname, `path/to/export/file`),
    },
},

The bootstrap imports file structure includes components like Alert, Button, Carousel, Collapse, Dropdown, Modal, Offcanvas, Popover, ScrollSpy, Tab, Toast, and Tooltip. These components can be selectively included in the javascript file to cater to the specific needs of the project.

Answer 3

Answer №2

While I may not be an expert, I urge caution when it comes to combining libraries like Boostrap into a single main file along with other JS files outside the framework. This can lead to performance issues, potential crashes between libraries, conflicts in definitions, and the risk of penalties from search engines like Google due to lack of proper updates and build processes.

Furthermore, Boostrap usually offers already compressed/minified/uglified .min.css and .min.js files that are optimized for use without customization. It's best to avoid using uncompressed files unless you plan to make significant modifications to the design patterns.

For any additional custom libraries or vanilla JS code you create, tools like grunt-contrib-concat can be beneficial. Additionally, assessing performance with tools like PageSpeed Insights can help identify areas for improvement and optimization.

Answer 4

While I may not be an expert, I urge caution when it comes to combining libraries like Boostrap into a single main file along with other JS files outside the framework. This can lead to performance issues, potential crashes between libraries, conflicts in definitions, and the risk of penalties from search engines like Google due to lack of proper updates and build processes.

Furthermore, Boostrap usually offers already compressed/minified/uglified .min.css and .min.js files that are optimized for use without customization. It's best to avoid using uncompressed files unless you plan to make significant modifications to the design patterns.

For any additional custom libraries or vanilla JS code you create, tools like grunt-contrib-concat can be beneficial. Additionally, assessing performance with tools like PageSpeed Insights can help identify areas for improvement and optimization.

Utilizing Grunt with Bootstrap 5 for streamlining and optimizing JavaScript code bundling

Answer №1

Answer №2

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