A simple template literals engine as a function for Node.js

template-literals-render.js

const { readFileSync } = require('fs')
const { resolve } = require('path')

// Resolving the absolute path of the 'views' directory
const viewDir = resolve(`${ __dirname }/views/`)

/**
 * Renders a view with the provided data.
 * @param {string} viewName - The name of the view to render.
 * @param {object} data - The data to pass to the view.
 * @returns {string} The rendered view as a string.
 * @throws {Error} If there is an error while rendering the view.
 */
function render (viewName, data) {
  try {
    // Read the contents of the view file
    const view = readFileSync(`${ viewDir }/${ viewName }.view.html`, 'utf8')
    
    // Creating a new function dynamically using the contents of the view file
    const template = new Function('data', `
      with (data)
        return \`${ view }\`
    `)
    
    // Rendering the view template with the provided data
    return template(data)
  }
  cache (error) {
    throw error // If an error occurs during the rendering process, throw it
  }
}

module.exports = render