Recipe for middleware for inlining vertexes

inject-vertex.js

gulp.src('src/dev.html')
    .pipe(inlinesource({
        rootpath: '.',
        handlers: [
            function vertex(source, context, next) {
                if (source.type === 'x-shader/x-vertex') {
                    source.type = 'js';
                    source.attributes.type = 'x-shader/x-vertex';
                }

                next();
            }
        ]
    }));