utils/use_require_helpers.js

   1 // writes helpers require for vnc.html (they should output app.js)
   2 var fs = require('fs');
   3 var fse = require('fs-extra');
   4 var path = require('path');
   5
   6 // util.promisify requires Node.js 8.x, so we have our own
   7 function promisify(original) {
   8     return function () {
   9         let obj = this;
  10         let args = Array.prototype.slice.call(arguments);
  11         return new Promise((resolve, reject) => {
  12             original.apply(obj, args.concat((err, value) => {
  13                 if (err) return reject(err);
  14                 resolve(value);
  15             }));
  16         });
  17     }
  18 }
  19
  20 const writeFile = promisify(fs.writeFile);
  21
  22 module.exports = {
  23     'amd': {
  24         appWriter: (base_out_path, out_path) => {
  25             // setup for requirejs
  26             return writeFile(out_path, 'requirejs(["app/ui"], function (ui) {});')
  27             .then(() => {
  28                 console.log(`Please place RequireJS in ${path.join(base_out_path, 'require.js')}`);
  29                 return `<script src="require.js" data-main="${path.relative(base_out_path, out_path)}"></script>`;
  30             });
  31         },
  32         noCopyOverride: () => {},
  33     },
  34     'commonjs': {
  35         optionsOverride: (opts) => {
  36             // CommonJS supports properly shifting the default export to work as normal
  37             opts.plugins.unshift("add-module-exports");
  38         },
  39         appWriter: (base_out_path, out_path) => {
  40             var browserify = require('browserify');
  41             var b = browserify(path.join(base_out_path, 'app/ui.js'), {});
  42             return promisify(b.bundle).call(b)
  43             .then((buf) => writeFile(out_path, buf))
  44             .then(() => `<script src="${path.relative(base_out_path, out_path)}"></script>`);
  45         },
  46         noCopyOverride: () => {},
  47     },
  48     'systemjs': {
  49         appWriter: (base_out_path, out_path) => {
  50             return writeFile(out_path, 'SystemJS.import("./app/ui.js");')
  51             .then(() => {
  52                 console.log(`Please place SystemJS in ${path.join(base_out_path, 'system-production.js')}`);
  53                 return `<script src="vendor/promise.js"></script>
  54 <script src="system-production.js"></script>\n<script src="${path.relative(base_out_path, out_path)}"></script>`;
  55             });
  56         },
  57         noCopyOverride: (paths, no_copy_files) => {
  58             no_copy_files.delete(path.join(paths.vendor, 'promise.js'));
  59         },
  60     },
  61     'umd': {
  62         optionsOverride: (opts) => {
  63             // umd supports properly shifting the default export to work as normal
  64             opts.plugins.unshift("add-module-exports");
  65         },
  66     },
  67 }