Handlebars - Register all partials in a directory

index.js

var fs = require('fs');
var hbs = require('hbs');

// Register Partials
var partialsDir = __dirname + '/views/partials';
var filenames = fs.readdirSync(partialsDir);

filenames.forEach(function (filename) {
  var matches = /^([^.]+).hbs$/.exec(filename);
  if (!matches) {
    return;
  }
  var name = matches[1];
  var template = fs.readFileSync(partialsDir + '/' + filename, 'utf8');
  hbs.registerPartial(name, template);
});

You can also use

const fs = require('fs')
const path = require('path')
const Handlebars = require('handlebars')

const partialsDir = '/path/to/dir'
fs.readdirSync(partialsDir).forEach(filename => {
  if (filename.endsWith('.hbs')) {
    const name = path.parse(filename).name

    Handlebars.registerPartial(
      name,
      fs.readFileSync(path.join(partialsDir, filename), 'utf-8')
    )
  }
})