.eleventy.js

const minifyHtmlOutput = (content, outputPath) => {
    if(outputPath && outputPath.endsWith('.html') ) {
        return require('html-minifier').minify(content, {
            useShortDoctype: true,
            removeComments: true,
            collapseWhitespace: true
        });
    }

    return content;
};

module.exports = function(eleventyConfig) {
    eleventyConfig.addPassthroughCopy({
        'src/_assets/ico': 'ico',
        'src/_assets/img': 'img',
        'src/manifest.webmanifest': 'manifest.webmanifest'
    });

    eleventyConfig.addLayoutAlias('main', 'layouts/main.njk');

    eleventyConfig.addPlugin(require('eleventy-plugin-svg-contents'));

    eleventyConfig.addTransform('htmlmin', minifyHtmlOutput);

    return {
        htmlTemplateEngine: "njk",
        markdownTemplateEngine: "njk",
        dataTemplateEngine: "njk",
        templateFormats: ["njk"],
        dir: {
            input: "src",
            output: "_site",
            includes: "_includes"
        },
        passthroughFileCopy: true
    };
}