flow like the river

BACK_BACK/node_modules/parcel-bundler/lib/packagers/Packager.js

@@ -0,0 +1,76 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
+
+const fs = require('fs');
+
+const _require = require('@parcel/utils'),
+      promisify = _require.promisify;
+
+const path = require('path');
+
+const _require2 = require('@parcel/fs'),
+      mkdirp = _require2.mkdirp;
+
+class Packager {
+  constructor(bundle, bundler) {
+    this.bundle = bundle;
+    this.bundler = bundler;
+    this.options = bundler.options;
+  }
+
+  static shouldAddAsset() {
+    return true;
+  }
+
+  setup() {
+    var _this = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      // Create sub-directories if needed
+      if (_this.bundle.name.includes(path.sep)) {
+        yield 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));
+    })();
+  }
+
+  write(string) {
+    var _this2 = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      yield _this2.dest.write(string);
+    })();
+  }
+
+  start() {
+    return (0, _asyncToGenerator2.default)(function* () {})();
+  } // eslint-disable-next-line no-unused-vars
+
+
+  addAsset(asset) {
+    return (0, _asyncToGenerator2.default)(function* () {
+      throw new Error('Must be implemented by subclasses');
+    })();
+  }
+
+  getSize() {
+    return this.dest.bytesWritten;
+  }
+
+  end() {
+    var _this3 = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      yield _this3.dest.end();
+    })();
+  }
+
+}
+
+module.exports = Packager;