jhan.com.au/build.js

const fs = require('fs');
// const path = require('path');
const readline = require('readline')

const files = ["src/index.html",
	       "src/projects/2016-XXXX.html",
	       "src/projects/2023-Pepperstone.html"]; // this list should be generated.

files.forEach( file => {
    var file_buffer = "";

    const rl = readline.createInterface({
	input: fs.createReadStream(file),
	output: process.stdout,
	terminal: false
    });

    const re = new RegExp('{% include \'*(.*)\' %}');

    rl.on('line', line => {
	const match = line.match(re);
	if (match) {
	    file_buffer += fs.readFileSync(match[1], 'utf8');
	} else {
            file_buffer += line + "\n";
	}
    });
    
    rl.on('close', () => {
	ensureDirectoryExists('build/' + file.split('/').slice(1).join('/')); // all this quatch is to remove the /src/.
	fs.writeFileSync('build/' + file.split('/').slice(1).join('/'), file_buffer, 'utf8');
    });
});

fs.cp('./src/styles','./build/styles', { recursive: true }, (err) => {
 	if (err) throw err;
});


function ensureDirectoryExists(filePath) {
    var dirname = filePath.split('/').slice(0,-1).join('/');
    if (fs.existsSync(dirname)) {
	return true;
    }
    ensureDirectoryExists(dirname);
    fs.mkdirSync(dirname);
}