Why doesn't filename work in HtmlWebpackPlugin for Webpack?

Question

webpack

Created a minimal build configuration:

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    context: path.resolve(__dirname, 'source'),
    entry: './entry.js',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'public'),
    },
    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            template: './file.html',
            filename: '[name]-[hash].html'
        }),
    ]
}

I expect that in the / public folder I will have a file file -021d46d31a4a286de108.html. In fact:


Where does the template engine get the value of main from?