Why do I get an error when generating html files? - node.js

Question

I try to read all the subfolders and files that are in the 'project/lib /viewer_lib/templates' directory, but I get an error. In cases when I try to read one file with a specific name in the folder of this directory, then I can do it. Below is the webpack code. I would be very grateful for the help.
The following code creates html files, but the generated files are not correct, i.e. They are not properly gathered in html, I need to fix it.
Project folder structure:
/Project
/assets
webpack.config.js
.babelrc
package
/js
app.js
/viewer_web
/templates
/login
login.pug
connect.pug
/main
index.pug
users.pug
/page
page.pug
/priv
/static
/js
app.js
app.css
index.html
Project
const path = require("path");
const glob = require("glob");
const fs = require("fs");
const async = require("async");
const devMode = process.env.NODE_ENV !== "production";
// styles
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const ExtractTextPlugin = require("extract-text-webpack-plugin");
//templates
const HtmlWebpackPlugin = require("html-webpack-plugin");
const dirpath = "../lib/viewer_web/templates";
const folder = dirpath => {
const folders = fs.readdirSync(path.resolve(__dirname, dirpath));
return folders.map(name => `${dirpath}/${name}`);
};
const template = foldpath => {
return foldpath.map(path_fold => {
const files = fs.readdirSync(path.resolve(__dirname, path_fold));
return files;
});
};
const parse = template => {
const handel = template.map(array => array.map(item => {
const parts = item.split(".");
const name = parts[0];
const extension = parts[1];
return {name, extension};
}));
return handel;
};
const directories = folder(dirpath);
const files = template(directories);
const rendering = handel => {
const path_file = directories.map(item => {
const files = fs.readdirSync(path.resolve(__dirname, item));
return files.map(name => {
const templateDir = `${item}`;
return templateDir;
})
})
return handel.map(arr => arr.map(obj => {
return path_file.map(arr => arr.map(x => {
const name = obj.name;
const ext = obj.extension;
return new HtmlWebpackPlugin({
filename: `${name}.html`,
template: path.resolve(__dirname, `${x}/${name}.${ext}`),
})
}));
}));
}
const handel = parse(files);
const htmlPlugin = rendering(handel);
let a = [];
const f = htmlPlugin.map(x => x.map(y => y.map(z => z.map(t => a.push(t)))));
module.exports = (env, options) => ({
optimization: {
minimizer: [
new UglifyJsPlugin({ cache: true, parallel: true, sourceMap: false }),
new OptimizeCSSAssetsPlugin({})
]
},
entry: {
"./js/app.js": ["./js/app.js"].concat(glob.sync("./vendor/**/*.js"))
},
output: {
filename: "app.js",
path: path.resolve(__dirname, "../priv/static/js")
},
devServer: {
port: 3000
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader"
}
},
{
test: /\.(png|jpg|gif)$/,
use: [
{
loader: "file-loader",
options: { name: "img/[name].[ext]" }
}
]
},
{
test: /\.(sass|scss)$/,
exclude: /node_modules/,
include: path.resolve(__dirname, "./scss"),
use: [
MiniCssExtractPlugin.loader,
{
loader: "css-loader",
options: {
sourceMap: true
}
},
{
loader: "resolve-url-loader"
},
{
loader: "sass-loader",
options: {
sourceMap: true
}
}
]
},
{
test: /\.pug$/,
include: path.resolve(__dirname, '../lib/viewer_web/templates/main'),
use: ["pug-loader"]
}
]
},
plugins: [
new CopyWebpackPlugin([{ from: "static/", to: "../" }]),
new MiniCssExtractPlugin({
filename: "app.css",
allChunks: true
})
].concat(a)
});

Answer 1

I could not solve it this way, but the following code solved my problem.
I just wanted to divide everything into separate functions, but I got confused about it.
const dirpath = "../lib/viewer_web/templates";
function generateHtmlPlugins(templateDir) {
const templateFolds = fs.readdirSync(path.resolve(__dirname, templateDir));
return templateFolds.map(name_fold => {
const templates = fs.readdirSync(path.resolve(__dirname, `${templateDir}/${name_fold}`));
return templates.map(files => {
const parts = files.split(".");
const name = parts[0];
const extension = parts[1];
return new HtmlWebpackPlugin({
filename: `${name}.html`,
template: path.resolve(__dirname, `${templateDir}/${name_fold}/${name}.${extension}`)
});
});
});
}
const htmlPlugin = generateHtmlPlugins(dirpath);
let rendering = [];
htmlPlugin.map(x => x.map(y => rendering.push(y)));

Answer 2

use FLASH library , it will pass errors to view .