docusaurus-plugin-svelte/src/index.js

Docusaurus (v2) loads content from user friendly mdx files and converts the mdx files to html files.

const path = require("path");

module.exports = (content,options) => {
    return {
        name: 'docusaurus-plugin-usesvelte',
        configureWebpack(config, isServer, utils) {
            return {
                resolve: {
                    // see below for an explanation
                    alias: {
                      svelte: path.resolve('node_modules', 'svelte')
                    },
                    extensions: ['.mjs', '.js', '.svelte'],
                    mainFields: ['svelte', 'browser', 'module', 'main']
                },
                module: {
                    rules: [
                        {
                            test: /\.(svelte)$/,
                            use: 'svelte-loader'
                          },
                          {
                            // required to prevent errors from Svelte on Webpack 5+, omit on Webpack 4
                            test: /node_modules\/svelte\/.*\.mjs$/,
                            resolve: {
                              fullySpecified: false
                            }
                          }                        
                    ]
                }
            }
        }
    }
}