data/data.html

{% set menuItems = [
	{
		title: 'agency',
		link: 'agency.html'
	},
	{
		title: 'projects',
		link: 'projects.html'
	},
	{
		title: 'jobs',
		link: 'jobs.html'
	},
	{
		title:  'contact',
		link: 'contact.html'
	}

] %}

partials/_header.html(меню)
{% import "data/data.html" as data %} (в ту страницу куда инеклюдится header)
		<div class="header__center js-header-center">
			<ul class="nav-menu header__nav-menu">

				{% for item in data.menuItems %}
				<li class="{% if (pageLink == item.title) %}current-menu-item{% endif %}"><a href="{{ item.link }}">{{ item.title }}</a></li>
				{% endfor %}
			</ul>
			<a href="#" class="header__lang js-header-lang" data-name="{{ data.lang.name }}.">{{data.lang.locale}}.</a>
			<div class="header__socials">
				<ul class="header__socials-list">
					{% for item in data.socials %}
					<li class="header__socials-item">
						<a href="#" class="header__socials-link">{{ item }}</a>
					</li>
					{% endfor %}
				</ul>
			</div>

		</div>