Sample Gulpfile to compile liquid (Jekyll) templates with Front Matter.

gulpfile.js

var engine = new Liquid.Engine,
    es = require('event-stream'),
    frontmatter = require('gulp-front-matter'),
    fs = require('fs'),
    Liquid = require('liquid-node'),
    engine.registerFileSystem(new Liquid.LocalFileSystem('./_includes'))

gulp.task('compile', function() {
    return gulp.src(['./page.html'])
        // only compile pages that have changed
        .pipe(changed('./_site/', {
            extension: '.html'
        }))
        // get the frontmatter, accessible via file.meta
        .pipe(frontmatter({
            property: 'meta'
        })).pipe(es.map(function(file, cb) {
            // if layout is defined in the frontmatter, if not use default.html
            if (file.meta.layout) {
                var template = String(fs.readFileSync('./_layouts/' + file.meta.layout + '.html'))
            } else {
                var template = String(fs.readFileSync('./_layouts/default.html'))
            }
            // run the main layout through node-liquid putting frontmatter in 'page' namespace.
            var mainLayout = engine.parseAndRender(template, {
                page: file.meta,
                content: String(file.contents)
            }).then(function(result) {
                // compile page content with no namespace on the frontmatter
                var mainLayout = engine.parseAndRender(result, file.meta).then(function(final) {
                    file.contents = new Buffer(final)
                    cb(null, file)
                })
            })
        }))
        .pipe(gulp.dest('./_site/'))
  })