flow like the river

VISUALIZACION/node_modules/parcel-bundler/src/packagers/Packager.js

@@ -0,0 +1,44 @@
+const fs = require('fs');
+const promisify = require('../utils/promisify');
+const path = require('path');
+const {mkdirp} = require('../utils/fs');
+
+class Packager {
+  constructor(bundle, bundler) {
+    this.bundle = bundle;
+    this.bundler = bundler;
+    this.options = bundler.options;
+  }
+
+  async setup() {
+    // Create sub-directories if needed
+    if (this.bundle.name.includes(path.sep)) {
+      await mkdirp(path.dirname(this.bundle.name));
+    }
+
+    this.dest = fs.createWriteStream(this.bundle.name);
+    this.dest.write = promisify(this.dest.write.bind(this.dest));
+    this.dest.end = promisify(this.dest.end.bind(this.dest));
+  }
+
+  async write(string) {
+    await this.dest.write(string);
+  }
+
+  async start() {}
+
+  // eslint-disable-next-line no-unused-vars
+  async addAsset(asset) {
+    throw new Error('Must be implemented by subclasses');
+  }
+
+  getSize() {
+    return this.dest.bytesWritten;
+  }
+
+  async end() {
+    await this.dest.end();
+  }
+}
+
+module.exports = Packager;