index.js

const mustache = require("mustache");
const fs = require("fs");
const path = require("path");

const baseTemp = fs.readFileSync(
  path.resolve(__dirname, "./must/base.mustache"),
  "utf8"
);

const json = JSON.parse(
  fs.readFileSync(path.resolve(__dirname, "./must/data.json"))
);

if (Array.isArray(json?.data)) {
  const arr = json.data;

  json.data.forEach((datum, i) => {
    let htmlContent = null;

    if (i === 0) {
      htmlContent = mustache.render(baseTemp, datum);
    } else {
      htmlContent = mustache.render(baseTemp, {
        ...json.data[0],
        ...datum,
        cssFiles: datum?.cssFiles
          ? [...json.data[0].cssFiles, ...datum?.cssFiles]
          : json.data[0].cssFiles,
        jsFiles: datum?.jsFiles
          ? [...json.data[0].jsFiles, ...datum?.jsFiles]
          : json.data[0].jsFiles,
      });
    }
    // console.log(htmlContent);
    fs.writeFile(`${datum.file}index.html`, htmlContent, (err) => {
      if (err) {
        console.log(`Probile while writing to ${datum.file}`);
        return;
      }
      // console.log(err);
    });
  });
}