var gulp = require('gulp') var concat = require('gulp-concat') // Build editor gulp.task('editor', function () { return gulp.src(['node_modules/d3/d3.min.js', 'node_modules/dagre-d3/dist/dagre-d3.min.js', 'dist/mermaid.slim.js', 'src/editor.js']) .pipe(concat('build.js')) .pipe(gulp.dest('./editor/')) })