disklet - npm Package Compare versions

Comparing version 0.2.8 to 0.2.9

CHANGELOG.md

 # Disklet
 
+## 0.2.9 (2018-11-12)
+
+* Add complete Flow typing coverage.
+* Fix binary data on React Native (`setData` / `getData` were corrupting data before).
+
 ## 0.2.8 (2018-11-03)
@@ -4,0 +9,0 @@

lib/disklet.cjs.js

@@ -12,86 +12,2 @@ 'use strict';
 /**
- * Interprets a path as a series of folder lookups,
- * handling special components like `.` and `..`.
- */
-function followPath(folder, parts) {
-  var i = 0; // Read index
-
-  var j = 0; // Write index
-  // Shift down good elements, dropping bad ones:
-
-  while (i < parts.length) {
-    var part = parts[i++];
-    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
-    if (j < 0) throw new Error('Path would escape folder');
-  } // Navigate the folder:
-
-
-  for (i = 0; i < j; ++i) {
-    folder = folder.folder(parts[i]);
-  }
-
-  return folder;
-}
-/**
- * Navigates down to the file indicated by the path.
- */
-
-
-function locateFile(folder, path) {
-  var parts = path.split('/');
-  var filename = parts.pop();
-  return followPath(folder, parts).file(filename);
-}
-/**
- * Navigates down to the sub-folder indicated by the path.
- */
-
-function locateFolder(folder, path) {
-  var parts = path.split('/');
-  return followPath(folder, parts);
-}
-
-/**
- * Applies an async function to all the files in a folder.
- */
-function mapFiles(folder, f) {
-  return folder.listFiles().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.file(name), name, folder);
-    }));
-  });
-}
-/**
- * Applies an async function to all the sub-folders in a folder.
- */
-
-function mapFolders(folder, f) {
-  return folder.listFolders().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.folder(name), name, folder);
-    }));
-  });
-}
-/**
- * Recursively applies an async function to all the files in a folder tree.
- * The file names are expanded into paths, and the result is a flat array.
- */
-
-function mapAllFiles(folder, f) {
-  function recurse(folder, f, prefix) {
-    return Promise.all([mapFiles(folder, function (file, name) {
-      return f(file, prefix + name, folder);
-    }), mapFolders(folder, function (folder, name) {
-      return recurse(folder, f, prefix + name + '/');
-    })]).then(function (_ref) {
-      var files = _ref[0],
-          folders = _ref[1];
-      return files.concat.apply(files, folders);
-    });
-  }
-
-  return recurse(folder, f, '');
-}
-
-/**
  * Verifies that a name contains no slashes.
@@ -111,9 +27,10 @@ */
 function storageKeys(storage) {
-  var keys = [];
+  var out = [];
 
   for (var i = 0; i < storage.length; ++i) {
-    keys.push(storage.key(i));
+    var key = storage.key(i);
+    if (key) out.push(key);
   }
 
-  return keys;
+  return out;
 }
@@ -244,110 +161,11 @@ /**
 
-  return new LocalStorageFolder(storage, opts.prefix || '');
+  var _opts = opts,
+      _opts$prefix = _opts.prefix,
+      prefix = _opts$prefix === void 0 ? '' : _opts$prefix;
+  return new LocalStorageFolder(storage, prefix);
 }
 
-function logConsole(path, operation) {
-  console.log(operation + " \"" + path + "\"");
-}
-
-function log(path, operation, opts) {
-  var f = opts.callback != null ? opts.callback : logConsole;
-
-  if (opts.verbose || /set|delete/.test(operation)) {
-    f(path, operation);
-  }
-}
-
-var LoggedFile =
-/*#__PURE__*/
-function () {
-  function LoggedFile(file, path, opts) {
-    this._file = file;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto = LoggedFile.prototype;
-
-  _proto.delete = function _delete() {
-    log(this._path, 'delete file', this._opts);
-    return this._file.delete();
-  };
-
-  _proto.getData = function getData() {
-    log(this._path, 'get data', this._opts);
-    return this._file.getData();
-  };
-
-  _proto.getText = function getText() {
-    log(this._path, 'get text', this._opts);
-    return this._file.getText();
-  };
-
-  _proto.setData = function setData(data) {
-    log(this._path, 'set data', this._opts);
-    return this._file.setData(data);
-  };
-
-  _proto.setText = function setText(text) {
-    log(this._path, 'set text', this._opts);
-    return this._file.setText(text);
-  };
-
-  _proto.getPath = function getPath() {
-    log(this._path, 'get path', this._opts);
-    return this._file;
-  };
-
-  return LoggedFile;
-}();
-
-var LoggedFolder =
-/*#__PURE__*/
-function () {
-  function LoggedFolder(folder, path, opts) {
-    this._folder = folder;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto2 = LoggedFolder.prototype;
-
-  _proto2.delete = function _delete() {
-    log(this._path, 'delete folder', this._opts);
-    return this._folder.delete();
-  };
-
-  _proto2.file = function file(name) {
-    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
-  };
-
-  _proto2.folder = function folder(name) {
-    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
-  };
-
-  _proto2.listFiles = function listFiles() {
-    log(this._path, 'list files', this._opts);
-    return this._folder.listFiles();
-  };
-
-  _proto2.listFolders = function listFolders() {
-    log(this._path, 'list folders', this._opts);
-    return this._folder.listFolders();
-  };
-
-  return LoggedFolder;
-}();
-
-function makeLoggedFolder(folder, opts) {
-  if (opts === void 0) {
-    opts = {};
-  }
-
-  return new LoggedFolder(folder, '', opts);
-}
-
 /**
  * A single file stored in memory.
  */
-
 var MemoryFile =
@@ -370,3 +188,12 @@ /*#__PURE__*/
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item === 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a text file."));
+    }
+
+    return Promise.resolve(item);
   };
@@ -376,7 +203,18 @@
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item !== 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a binary file."));
+    }
+
+    return Promise.resolve(item);
   };
 
   _proto.setData = function setData(data) {
-    this._storage[this._path] = data;
+    // We use `any` here becase Flow is too dumb to know that `ArrayLike`
+    var flowHack = data;
+    this._storage[this._path] = Uint8Array.from(flowHack);
     return Promise.resolve();
@@ -470,3 +308,3 @@ };
   return new Promise(function (resolve, reject) {
-    return fs.mkdir(path, function (err) {
+    return fs.mkdir(path, void 0, function (err) {
       return err && err.code !== 'EEXIST' ? reject(err) : resolve();
@@ -493,10 +331,2 @@ });
 
-function readFile(path, opts) {
-  return new Promise(function (resolve, reject) {
-    return fs.readFile(path, opts, function (err, out) {
-      return err ? reject(err) : resolve(out);
-    });
-  });
-}
-
 function stat(path) {
@@ -597,11 +427,24 @@ return new Promise(function (resolve, reject) {
   _proto.getData = function getData() {
-    return readFile(this._path, null);
+    var _this = this;
+
+    return new Promise(function (resolve, reject) {
+      return fs.readFile(_this._path, {}, function (err, out) {
+        return err ? reject(err) : resolve(out);
+      });
+    });
   };
 
   _proto.getText = function getText() {
-    return readFile(this._path, 'utf8');
+    var _this2 = this;
+
+    return new Promise(function (resolve, reject) {
+      return fs.readFile(_this2._path, 'utf8', function (err, out) {
+        return err ? reject(err) : resolve(out);
+      });
+    });
   };
 
   _proto.setData = function setData(data) {
-    return writeFileDeep(this._path, Uint8Array.from(data), null);
+    var flowHack = data;
+    return writeFileDeep(this._path, Buffer.from(flowHack), {});
   };
@@ -630,3 +473,3 @@
   _proto2.delete = function _delete() {
-    var _this = this;
+    var _this3 = this;
 
@@ -644,8 +487,8 @@ return readdirStat(this._path).then(function (lists) {
       return Promise.all(files.map(function (name) {
-        return _this.file(name).delete();
+        return _this3.file(name).delete();
       }).concat(folders.map(function (name) {
-        return _this.folder(name).delete();
+        return _this3.folder(name).delete();
       })));
     }).then(function () {
-      return rmdir(_this._path);
+      return rmdir(_this3._path);
     }).catch(ignoreMissing());
@@ -691,6 +534,190 @@ };
 
-function makeReactNativeFolder(path) {
+function makeReactNativeFolder() {
   throw new Error('Not available on node.js');
 }
 
+/**
+ * Interprets a path as a series of folder lookups,
+ * handling special components like `.` and `..`.
+ */
+function followPath(folder, parts) {
+  var i = 0; // Read index
+
+  var j = 0; // Write index
+  // Shift down good elements, dropping bad ones:
+
+  while (i < parts.length) {
+    var part = parts[i++];
+    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
+    if (j < 0) throw new Error('Path would escape folder');
+  } // Navigate the folder:
+
+
+  for (i = 0; i < j; ++i) {
+    folder = folder.folder(parts[i]);
+  }
+
+  return folder;
+}
+/**
+ * Navigates down to the file indicated by the path.
+ */
+
+
+function locateFile(folder, path) {
+  var parts = path.split('/');
+  var filename = parts.pop();
+  return followPath(folder, parts).file(filename);
+}
+/**
+ * Navigates down to the sub-folder indicated by the path.
+ */
+
+function locateFolder(folder, path) {
+  var parts = path.split('/');
+  return followPath(folder, parts);
+}
+
+/**
+ * Applies an async function to all the files in a folder.
+ */
+function mapFiles(folder, f) {
+  return folder.listFiles().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.file(name), name, folder);
+    }));
+  });
+}
+/**
+ * Applies an async function to all the sub-folders in a folder.
+ */
+
+function mapFolders(folder, f) {
+  return folder.listFolders().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.folder(name), name, folder);
+    }));
+  });
+}
+/**
+ * Recursively applies an async function to all the files in a folder tree.
+ * The file names are expanded into paths, and the result is a flat array.
+ */
+
+function mapAllFiles(folder, f) {
+  function recurse(folder, f, prefix) {
+    return Promise.all([mapFiles(folder, function (file, name) {
+      return f(file, prefix + name, folder);
+    }), mapFolders(folder, function (folder, name) {
+      return recurse(folder, f, prefix + name + '/');
+    })]).then(function (_ref) {
+      var files = _ref[0],
+          folders = _ref[1];
+      return files.concat.apply(files, folders);
+    });
+  }
+
+  return recurse(folder, f, '');
+}
+
+function logConsole(path, operation) {
+  console.log(operation + " \"" + path + "\"");
+}
+
+function log(path, operation, opts) {
+  var f = opts.callback != null ? opts.callback : logConsole;
+
+  if (opts.verbose || /set|delete/.test(operation)) {
+    f(path, operation);
+  }
+}
+
+var LoggedFile =
+/*#__PURE__*/
+function () {
+  function LoggedFile(file, path, opts) {
+    this._file = file;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto = LoggedFile.prototype;
+
+  _proto.delete = function _delete() {
+    log(this._path, 'delete file', this._opts);
+    return this._file.delete();
+  };
+
+  _proto.getData = function getData() {
+    log(this._path, 'get data', this._opts);
+    return this._file.getData();
+  };
+
+  _proto.getText = function getText() {
+    log(this._path, 'get text', this._opts);
+    return this._file.getText();
+  };
+
+  _proto.setData = function setData(data) {
+    log(this._path, 'set data', this._opts);
+    return this._file.setData(data);
+  };
+
+  _proto.setText = function setText(text) {
+    log(this._path, 'set text', this._opts);
+    return this._file.setText(text);
+  };
+
+  _proto.getPath = function getPath() {
+    return this._path;
+  };
+
+  return LoggedFile;
+}();
+
+var LoggedFolder =
+/*#__PURE__*/
+function () {
+  function LoggedFolder(folder, path, opts) {
+    this._folder = folder;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto2 = LoggedFolder.prototype;
+
+  _proto2.delete = function _delete() {
+    log(this._path, 'delete folder', this._opts);
+    return this._folder.delete();
+  };
+
+  _proto2.file = function file(name) {
+    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
+  };
+
+  _proto2.folder = function folder(name) {
+    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
+  };
+
+  _proto2.listFiles = function listFiles() {
+    log(this._path, 'list files', this._opts);
+    return this._folder.listFiles();
+  };
+
+  _proto2.listFolders = function listFolders() {
+    log(this._path, 'list folders', this._opts);
+    return this._folder.listFolders();
+  };
+
+  return LoggedFolder;
+}();
+
+function makeLoggedFolder(folder, opts) {
+  if (opts === void 0) {
+    opts = {};
+  }
+
+  return new LoggedFolder(folder, '', opts);
+}
+
 function removeDuplicates(master, fallback) {
@@ -824,5 +851,2 @@ var blacklist = {};
 exports.locateFolder = locateFolder;
-exports.mapAllFiles = mapAllFiles;
-exports.mapFiles = mapFiles;
-exports.mapFolders = mapFolders;
 exports.makeLocalStorageFolder = makeLocalStorageFolder;
@@ -834,2 +858,5 @@ exports.makeLoggedFolder = makeLoggedFolder;
 exports.makeUnionFolder = makeUnionFolder;
+exports.mapAllFiles = mapAllFiles;
+exports.mapFiles = mapFiles;
+exports.mapFolders = mapFolders;
 //# sourceMappingURL=disklet.cjs.js.map

lib/disklet.js

@@ -6,86 +6,2 @@ import { base64 } from 'rfc4648';
 /**
- * Interprets a path as a series of folder lookups,
- * handling special components like `.` and `..`.
- */
-function followPath(folder, parts) {
-  var i = 0; // Read index
-
-  var j = 0; // Write index
-  // Shift down good elements, dropping bad ones:
-
-  while (i < parts.length) {
-    var part = parts[i++];
-    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
-    if (j < 0) throw new Error('Path would escape folder');
-  } // Navigate the folder:
-
-
-  for (i = 0; i < j; ++i) {
-    folder = folder.folder(parts[i]);
-  }
-
-  return folder;
-}
-/**
- * Navigates down to the file indicated by the path.
- */
-
-
-function locateFile(folder, path) {
-  var parts = path.split('/');
-  var filename = parts.pop();
-  return followPath(folder, parts).file(filename);
-}
-/**
- * Navigates down to the sub-folder indicated by the path.
- */
-
-function locateFolder(folder, path) {
-  var parts = path.split('/');
-  return followPath(folder, parts);
-}
-
-/**
- * Applies an async function to all the files in a folder.
- */
-function mapFiles(folder, f) {
-  return folder.listFiles().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.file(name), name, folder);
-    }));
-  });
-}
-/**
- * Applies an async function to all the sub-folders in a folder.
- */
-
-function mapFolders(folder, f) {
-  return folder.listFolders().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.folder(name), name, folder);
-    }));
-  });
-}
-/**
- * Recursively applies an async function to all the files in a folder tree.
- * The file names are expanded into paths, and the result is a flat array.
- */
-
-function mapAllFiles(folder, f) {
-  function recurse(folder, f, prefix) {
-    return Promise.all([mapFiles(folder, function (file, name) {
-      return f(file, prefix + name, folder);
-    }), mapFolders(folder, function (folder, name) {
-      return recurse(folder, f, prefix + name + '/');
-    })]).then(function (_ref) {
-      var files = _ref[0],
-          folders = _ref[1];
-      return files.concat.apply(files, folders);
-    });
-  }
-
-  return recurse(folder, f, '');
-}
-
-/**
  * Verifies that a name contains no slashes.
@@ -105,9 +21,10 @@ */
 function storageKeys(storage) {
-  var keys = [];
+  var out = [];
 
   for (var i = 0; i < storage.length; ++i) {
-    keys.push(storage.key(i));
+    var key = storage.key(i);
+    if (key) out.push(key);
   }
 
-  return keys;
+  return out;
 }
@@ -238,110 +155,11 @@ /**
 
-  return new LocalStorageFolder(storage, opts.prefix || '');
+  var _opts = opts,
+      _opts$prefix = _opts.prefix,
+      prefix = _opts$prefix === void 0 ? '' : _opts$prefix;
+  return new LocalStorageFolder(storage, prefix);
 }
 
-function logConsole(path, operation) {
-  console.log(operation + " \"" + path + "\"");
-}
-
-function log(path, operation, opts) {
-  var f = opts.callback != null ? opts.callback : logConsole;
-
-  if (opts.verbose || /set|delete/.test(operation)) {
-    f(path, operation);
-  }
-}
-
-var LoggedFile =
-/*#__PURE__*/
-function () {
-  function LoggedFile(file, path, opts) {
-    this._file = file;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto = LoggedFile.prototype;
-
-  _proto.delete = function _delete() {
-    log(this._path, 'delete file', this._opts);
-    return this._file.delete();
-  };
-
-  _proto.getData = function getData() {
-    log(this._path, 'get data', this._opts);
-    return this._file.getData();
-  };
-
-  _proto.getText = function getText() {
-    log(this._path, 'get text', this._opts);
-    return this._file.getText();
-  };
-
-  _proto.setData = function setData(data) {
-    log(this._path, 'set data', this._opts);
-    return this._file.setData(data);
-  };
-
-  _proto.setText = function setText(text) {
-    log(this._path, 'set text', this._opts);
-    return this._file.setText(text);
-  };
-
-  _proto.getPath = function getPath() {
-    log(this._path, 'get path', this._opts);
-    return this._file;
-  };
-
-  return LoggedFile;
-}();
-
-var LoggedFolder =
-/*#__PURE__*/
-function () {
-  function LoggedFolder(folder, path, opts) {
-    this._folder = folder;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto2 = LoggedFolder.prototype;
-
-  _proto2.delete = function _delete() {
-    log(this._path, 'delete folder', this._opts);
-    return this._folder.delete();
-  };
-
-  _proto2.file = function file(name) {
-    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
-  };
-
-  _proto2.folder = function folder(name) {
-    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
-  };
-
-  _proto2.listFiles = function listFiles() {
-    log(this._path, 'list files', this._opts);
-    return this._folder.listFiles();
-  };
-
-  _proto2.listFolders = function listFolders() {
-    log(this._path, 'list folders', this._opts);
-    return this._folder.listFolders();
-  };
-
-  return LoggedFolder;
-}();
-
-function makeLoggedFolder(folder, opts) {
-  if (opts === void 0) {
-    opts = {};
-  }
-
-  return new LoggedFolder(folder, '', opts);
-}
-
 /**
  * A single file stored in memory.
  */
-
 var MemoryFile =
@@ -364,3 +182,12 @@ /*#__PURE__*/
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item === 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a text file."));
+    }
+
+    return Promise.resolve(item);
   };
@@ -370,7 +197,18 @@
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item !== 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a binary file."));
+    }
+
+    return Promise.resolve(item);
   };
 
   _proto.setData = function setData(data) {
-    this._storage[this._path] = data;
+    // We use `any` here becase Flow is too dumb to know that `ArrayLike`
+    var flowHack = data;
+    this._storage[this._path] = Uint8Array.from(flowHack);
     return Promise.resolve();
@@ -464,3 +302,3 @@ };
   return new Promise(function (resolve, reject) {
-    return fs.mkdir(path, function (err) {
+    return fs.mkdir(path, void 0, function (err) {
       return err && err.code !== 'EEXIST' ? reject(err) : resolve();
@@ -487,10 +325,2 @@ });
 
-function readFile(path, opts) {
-  return new Promise(function (resolve, reject) {
-    return fs.readFile(path, opts, function (err, out) {
-      return err ? reject(err) : resolve(out);
-    });
-  });
-}
-
 function stat(path) {
@@ -591,11 +421,24 @@ return new Promise(function (resolve, reject) {
   _proto.getData = function getData() {
-    return readFile(this._path, null);
+    var _this = this;
+
+    return new Promise(function (resolve, reject) {
+      return fs.readFile(_this._path, {}, function (err, out) {
+        return err ? reject(err) : resolve(out);
+      });
+    });
   };
 
   _proto.getText = function getText() {
-    return readFile(this._path, 'utf8');
+    var _this2 = this;
+
+    return new Promise(function (resolve, reject) {
+      return fs.readFile(_this2._path, 'utf8', function (err, out) {
+        return err ? reject(err) : resolve(out);
+      });
+    });
   };
 
   _proto.setData = function setData(data) {
-    return writeFileDeep(this._path, Uint8Array.from(data), null);
+    var flowHack = data;
+    return writeFileDeep(this._path, Buffer.from(flowHack), {});
   };
@@ -624,3 +467,3 @@
   _proto2.delete = function _delete() {
-    var _this = this;
+    var _this3 = this;
 
@@ -638,8 +481,8 @@ return readdirStat(this._path).then(function (lists) {
       return Promise.all(files.map(function (name) {
-        return _this.file(name).delete();
+        return _this3.file(name).delete();
       }).concat(folders.map(function (name) {
-        return _this.folder(name).delete();
+        return _this3.folder(name).delete();
       })));
     }).then(function () {
-      return rmdir(_this._path);
+      return rmdir(_this3._path);
     }).catch(ignoreMissing());
@@ -685,6 +528,190 @@ };
 
-function makeReactNativeFolder(path) {
+function makeReactNativeFolder() {
   throw new Error('Not available on node.js');
 }
 
+/**
+ * Interprets a path as a series of folder lookups,
+ * handling special components like `.` and `..`.
+ */
+function followPath(folder, parts) {
+  var i = 0; // Read index
+
+  var j = 0; // Write index
+  // Shift down good elements, dropping bad ones:
+
+  while (i < parts.length) {
+    var part = parts[i++];
+    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
+    if (j < 0) throw new Error('Path would escape folder');
+  } // Navigate the folder:
+
+
+  for (i = 0; i < j; ++i) {
+    folder = folder.folder(parts[i]);
+  }
+
+  return folder;
+}
+/**
+ * Navigates down to the file indicated by the path.
+ */
+
+
+function locateFile(folder, path) {
+  var parts = path.split('/');
+  var filename = parts.pop();
+  return followPath(folder, parts).file(filename);
+}
+/**
+ * Navigates down to the sub-folder indicated by the path.
+ */
+
+function locateFolder(folder, path) {
+  var parts = path.split('/');
+  return followPath(folder, parts);
+}
+
+/**
+ * Applies an async function to all the files in a folder.
+ */
+function mapFiles(folder, f) {
+  return folder.listFiles().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.file(name), name, folder);
+    }));
+  });
+}
+/**
+ * Applies an async function to all the sub-folders in a folder.
+ */
+
+function mapFolders(folder, f) {
+  return folder.listFolders().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.folder(name), name, folder);
+    }));
+  });
+}
+/**
+ * Recursively applies an async function to all the files in a folder tree.
+ * The file names are expanded into paths, and the result is a flat array.
+ */
+
+function mapAllFiles(folder, f) {
+  function recurse(folder, f, prefix) {
+    return Promise.all([mapFiles(folder, function (file, name) {
+      return f(file, prefix + name, folder);
+    }), mapFolders(folder, function (folder, name) {
+      return recurse(folder, f, prefix + name + '/');
+    })]).then(function (_ref) {
+      var files = _ref[0],
+          folders = _ref[1];
+      return files.concat.apply(files, folders);
+    });
+  }
+
+  return recurse(folder, f, '');
+}
+
+function logConsole(path, operation) {
+  console.log(operation + " \"" + path + "\"");
+}
+
+function log(path, operation, opts) {
+  var f = opts.callback != null ? opts.callback : logConsole;
+
+  if (opts.verbose || /set|delete/.test(operation)) {
+    f(path, operation);
+  }
+}
+
+var LoggedFile =
+/*#__PURE__*/
+function () {
+  function LoggedFile(file, path, opts) {
+    this._file = file;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto = LoggedFile.prototype;
+
+  _proto.delete = function _delete() {
+    log(this._path, 'delete file', this._opts);
+    return this._file.delete();
+  };
+
+  _proto.getData = function getData() {
+    log(this._path, 'get data', this._opts);
+    return this._file.getData();
+  };
+
+  _proto.getText = function getText() {
+    log(this._path, 'get text', this._opts);
+    return this._file.getText();
+  };
+
+  _proto.setData = function setData(data) {
+    log(this._path, 'set data', this._opts);
+    return this._file.setData(data);
+  };
+
+  _proto.setText = function setText(text) {
+    log(this._path, 'set text', this._opts);
+    return this._file.setText(text);
+  };
+
+  _proto.getPath = function getPath() {
+    return this._path;
+  };
+
+  return LoggedFile;
+}();
+
+var LoggedFolder =
+/*#__PURE__*/
+function () {
+  function LoggedFolder(folder, path, opts) {
+    this._folder = folder;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto2 = LoggedFolder.prototype;
+
+  _proto2.delete = function _delete() {
+    log(this._path, 'delete folder', this._opts);
+    return this._folder.delete();
+  };
+
+  _proto2.file = function file(name) {
+    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
+  };
+
+  _proto2.folder = function folder(name) {
+    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
+  };
+
+  _proto2.listFiles = function listFiles() {
+    log(this._path, 'list files', this._opts);
+    return this._folder.listFiles();
+  };
+
+  _proto2.listFolders = function listFolders() {
+    log(this._path, 'list folders', this._opts);
+    return this._folder.listFolders();
+  };
+
+  return LoggedFolder;
+}();
+
+function makeLoggedFolder(folder, opts) {
+  if (opts === void 0) {
+    opts = {};
+  }
+
+  return new LoggedFolder(folder, '', opts);
+}
+
 function removeDuplicates(master, fallback) {
@@ -816,3 +843,3 @@ var blacklist = {};
 
-export { locateFile, locateFolder, mapAllFiles, mapFiles, mapFolders, makeLocalStorageFolder, makeLoggedFolder, makeMemoryFolder, makeNodeFolder, makeReactNativeFolder, makeUnionFolder };
+export { locateFile, locateFolder, makeLocalStorageFolder, makeLoggedFolder, makeMemoryFolder, makeNodeFolder, makeReactNativeFolder, makeUnionFolder, mapAllFiles, mapFiles, mapFolders };
 //# sourceMappingURL=disklet.js.map

lib/disklet.rn.js

@@ -11,86 +11,2 @@ 'use strict';
 /**
- * Interprets a path as a series of folder lookups,
- * handling special components like `.` and `..`.
- */
-function followPath(folder, parts) {
-  var i = 0; // Read index
-
-  var j = 0; // Write index
-  // Shift down good elements, dropping bad ones:
-
-  while (i < parts.length) {
-    var part = parts[i++];
-    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
-    if (j < 0) throw new Error('Path would escape folder');
-  } // Navigate the folder:
-
-
-  for (i = 0; i < j; ++i) {
-    folder = folder.folder(parts[i]);
-  }
-
-  return folder;
-}
-/**
- * Navigates down to the file indicated by the path.
- */
-
-
-function locateFile(folder, path) {
-  var parts = path.split('/');
-  var filename = parts.pop();
-  return followPath(folder, parts).file(filename);
-}
-/**
- * Navigates down to the sub-folder indicated by the path.
- */
-
-function locateFolder(folder, path) {
-  var parts = path.split('/');
-  return followPath(folder, parts);
-}
-
-/**
- * Applies an async function to all the files in a folder.
- */
-function mapFiles(folder, f) {
-  return folder.listFiles().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.file(name), name, folder);
-    }));
-  });
-}
-/**
- * Applies an async function to all the sub-folders in a folder.
- */
-
-function mapFolders(folder, f) {
-  return folder.listFolders().then(function (names) {
-    return Promise.all(names.map(function (name) {
-      return f(folder.folder(name), name, folder);
-    }));
-  });
-}
-/**
- * Recursively applies an async function to all the files in a folder tree.
- * The file names are expanded into paths, and the result is a flat array.
- */
-
-function mapAllFiles(folder, f) {
-  function recurse(folder, f, prefix) {
-    return Promise.all([mapFiles(folder, function (file, name) {
-      return f(file, prefix + name, folder);
-    }), mapFolders(folder, function (folder, name) {
-      return recurse(folder, f, prefix + name + '/');
-    })]).then(function (_ref) {
-      var files = _ref[0],
-          folders = _ref[1];
-      return files.concat.apply(files, folders);
-    });
-  }
-
-  return recurse(folder, f, '');
-}
-
-/**
  * Verifies that a name contains no slashes.
@@ -110,9 +26,10 @@ */
 function storageKeys(storage) {
-  var keys = [];
+  var out = [];
 
   for (var i = 0; i < storage.length; ++i) {
-    keys.push(storage.key(i));
+    var key = storage.key(i);
+    if (key) out.push(key);
   }
 
-  return keys;
+  return out;
 }
@@ -243,110 +160,11 @@ /**
 
-  return new LocalStorageFolder(storage, opts.prefix || '');
+  var _opts = opts,
+      _opts$prefix = _opts.prefix,
+      prefix = _opts$prefix === void 0 ? '' : _opts$prefix;
+  return new LocalStorageFolder(storage, prefix);
 }
 
-function logConsole(path, operation) {
-  console.log(operation + " \"" + path + "\"");
-}
-
-function log(path, operation, opts) {
-  var f = opts.callback != null ? opts.callback : logConsole;
-
-  if (opts.verbose || /set|delete/.test(operation)) {
-    f(path, operation);
-  }
-}
-
-var LoggedFile =
-/*#__PURE__*/
-function () {
-  function LoggedFile(file, path, opts) {
-    this._file = file;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto = LoggedFile.prototype;
-
-  _proto.delete = function _delete() {
-    log(this._path, 'delete file', this._opts);
-    return this._file.delete();
-  };
-
-  _proto.getData = function getData() {
-    log(this._path, 'get data', this._opts);
-    return this._file.getData();
-  };
-
-  _proto.getText = function getText() {
-    log(this._path, 'get text', this._opts);
-    return this._file.getText();
-  };
-
-  _proto.setData = function setData(data) {
-    log(this._path, 'set data', this._opts);
-    return this._file.setData(data);
-  };
-
-  _proto.setText = function setText(text) {
-    log(this._path, 'set text', this._opts);
-    return this._file.setText(text);
-  };
-
-  _proto.getPath = function getPath() {
-    log(this._path, 'get path', this._opts);
-    return this._file;
-  };
-
-  return LoggedFile;
-}();
-
-var LoggedFolder =
-/*#__PURE__*/
-function () {
-  function LoggedFolder(folder, path, opts) {
-    this._folder = folder;
-    this._path = path;
-    this._opts = opts;
-  }
-
-  var _proto2 = LoggedFolder.prototype;
-
-  _proto2.delete = function _delete() {
-    log(this._path, 'delete folder', this._opts);
-    return this._folder.delete();
-  };
-
-  _proto2.file = function file(name) {
-    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
-  };
-
-  _proto2.folder = function folder(name) {
-    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
-  };
-
-  _proto2.listFiles = function listFiles() {
-    log(this._path, 'list files', this._opts);
-    return this._folder.listFiles();
-  };
-
-  _proto2.listFolders = function listFolders() {
-    log(this._path, 'list folders', this._opts);
-    return this._folder.listFolders();
-  };
-
-  return LoggedFolder;
-}();
-
-function makeLoggedFolder(folder, opts) {
-  if (opts === void 0) {
-    opts = {};
-  }
-
-  return new LoggedFolder(folder, '', opts);
-}
-
 /**
  * A single file stored in memory.
  */
-
 var MemoryFile =
@@ -369,3 +187,12 @@ /*#__PURE__*/
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item === 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a text file."));
+    }
+
+    return Promise.resolve(item);
   };
@@ -375,7 +202,18 @@
     var item = this._storage[this._path];
-    return item != null ? Promise.resolve(item) : Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+
+    if (item == null) {
+      return Promise.reject(new Error("Cannot load \"" + this._path + "\""));
+    }
+
+    if (typeof item !== 'string') {
+      return Promise.reject(new Error("\"" + this._path + "\" is a binary file."));
+    }
+
+    return Promise.resolve(item);
   };
 
   _proto.setData = function setData(data) {
-    this._storage[this._path] = data;
+    // We use `any` here becase Flow is too dumb to know that `ArrayLike`
+    var flowHack = data;
+    this._storage[this._path] = Uint8Array.from(flowHack);
     return Promise.resolve();
@@ -607,3 +445,5 @@ };
   _proto.getData = function getData() {
-    return readFile(this._path, null);
+    return readFile(this._path, 'base64').then(function (data) {
+      return rfc4648.base64.parse(data);
+    });
   };
@@ -616,3 +456,3 @@
   _proto.setData = function setData(data) {
-    return writeFileDeep(this._path, Uint8Array.from(data), null);
+    return writeFileDeep(this._path, rfc4648.base64.stringify(data), 'base64');
   };
@@ -696,6 +536,190 @@
 
-function makeReactNativeFolder() {
+function makeReactNativeFolder$1() {
   return new RNFolder(RNFS.DocumentDirectoryPath);
 }
 
+/**
+ * Interprets a path as a series of folder lookups,
+ * handling special components like `.` and `..`.
+ */
+function followPath(folder, parts) {
+  var i = 0; // Read index
+
+  var j = 0; // Write index
+  // Shift down good elements, dropping bad ones:
+
+  while (i < parts.length) {
+    var part = parts[i++];
+    if (part === '..') j--;else if (part !== '.' && part !== '') parts[j++] = part;
+    if (j < 0) throw new Error('Path would escape folder');
+  } // Navigate the folder:
+
+
+  for (i = 0; i < j; ++i) {
+    folder = folder.folder(parts[i]);
+  }
+
+  return folder;
+}
+/**
+ * Navigates down to the file indicated by the path.
+ */
+
+
+function locateFile(folder, path) {
+  var parts = path.split('/');
+  var filename = parts.pop();
+  return followPath(folder, parts).file(filename);
+}
+/**
+ * Navigates down to the sub-folder indicated by the path.
+ */
+
+function locateFolder(folder, path) {
+  var parts = path.split('/');
+  return followPath(folder, parts);
+}
+
+/**
+ * Applies an async function to all the files in a folder.
+ */
+function mapFiles(folder, f) {
+  return folder.listFiles().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.file(name), name, folder);
+    }));
+  });
+}
+/**
+ * Applies an async function to all the sub-folders in a folder.
+ */
+
+function mapFolders(folder, f) {
+  return folder.listFolders().then(function (names) {
+    return Promise.all(names.map(function (name) {
+      return f(folder.folder(name), name, folder);
+    }));
+  });
+}
+/**
+ * Recursively applies an async function to all the files in a folder tree.
+ * The file names are expanded into paths, and the result is a flat array.
+ */
+
+function mapAllFiles(folder, f) {
+  function recurse(folder, f, prefix) {
+    return Promise.all([mapFiles(folder, function (file, name) {
+      return f(file, prefix + name, folder);
+    }), mapFolders(folder, function (folder, name) {
+      return recurse(folder, f, prefix + name + '/');
+    })]).then(function (_ref) {
+      var files = _ref[0],
+          folders = _ref[1];
+      return files.concat.apply(files, folders);
+    });
+  }
+
+  return recurse(folder, f, '');
+}
+
+function logConsole(path, operation) {
+  console.log(operation + " \"" + path + "\"");
+}
+
+function log(path, operation, opts) {
+  var f = opts.callback != null ? opts.callback : logConsole;
+
+  if (opts.verbose || /set|delete/.test(operation)) {
+    f(path, operation);
+  }
+}
+
+var LoggedFile =
+/*#__PURE__*/
+function () {
+  function LoggedFile(file, path, opts) {
+    this._file = file;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto = LoggedFile.prototype;
+
+  _proto.delete = function _delete() {
+    log(this._path, 'delete file', this._opts);
+    return this._file.delete();
+  };
+
+  _proto.getData = function getData() {
+    log(this._path, 'get data', this._opts);
+    return this._file.getData();
+  };
+
+  _proto.getText = function getText() {
+    log(this._path, 'get text', this._opts);
+    return this._file.getText();
+  };
+
+  _proto.setData = function setData(data) {
+    log(this._path, 'set data', this._opts);
+    return this._file.setData(data);
+  };
+
+  _proto.setText = function setText(text) {
+    log(this._path, 'set text', this._opts);
+    return this._file.setText(text);
+  };
+
+  _proto.getPath = function getPath() {
+    return this._path;
+  };
+
+  return LoggedFile;
+}();
+
+var LoggedFolder =
+/*#__PURE__*/
+function () {
+  function LoggedFolder(folder, path, opts) {
+    this._folder = folder;
+    this._path = path;
+    this._opts = opts;
+  }
+
+  var _proto2 = LoggedFolder.prototype;
+
+  _proto2.delete = function _delete() {
+    log(this._path, 'delete folder', this._opts);
+    return this._folder.delete();
+  };
+
+  _proto2.file = function file(name) {
+    return new LoggedFile(this._folder.file(name), this._path + name, this._opts);
+  };
+
+  _proto2.folder = function folder(name) {
+    return new LoggedFolder(this._folder.folder(name), this._path + name + '/', this._opts);
+  };
+
+  _proto2.listFiles = function listFiles() {
+    log(this._path, 'list files', this._opts);
+    return this._folder.listFiles();
+  };
+
+  _proto2.listFolders = function listFolders() {
+    log(this._path, 'list folders', this._opts);
+    return this._folder.listFolders();
+  };
+
+  return LoggedFolder;
+}();
+
+function makeLoggedFolder(folder, opts) {
+  if (opts === void 0) {
+    opts = {};
+  }
+
+  return new LoggedFolder(folder, '', opts);
+}
+
 function removeDuplicates(master, fallback) {
@@ -829,5 +853,2 @@ var blacklist = {};
 exports.locateFolder = locateFolder;
-exports.mapAllFiles = mapAllFiles;
-exports.mapFiles = mapFiles;
-exports.mapFolders = mapFolders;
 exports.makeLocalStorageFolder = makeLocalStorageFolder;
@@ -837,4 +858,7 @@ exports.makeLoggedFolder = makeLoggedFolder;
 exports.makeNodeFolder = makeNodeFolder;
-exports.makeReactNativeFolder = makeReactNativeFolder;
+exports.makeReactNativeFolder = makeReactNativeFolder$1;
 exports.makeUnionFolder = makeUnionFolder;
+exports.mapAllFiles = mapAllFiles;
+exports.mapFiles = mapFiles;
+exports.mapFolders = mapFolders;
 //# sourceMappingURL=disklet.rn.js.map

package.json

 {
   "name": "disklet",
-  "version": "0.2.8",
+  "version": "0.2.9",
   "description": "A tiny, composable filesystem API",
@@ -27,3 +27,3 @@ "repository": {
     "build": "rimraf lib && rollup -c",
-    "precommit": "lint-staged && flow && npm test && npm run build",
+    "precommit": "lint-staged && flow && npm test",
     "flow": "flow",
@@ -33,3 +33,4 @@ "format": "import-sort -l --write '*.js' 'src/**/*.js' 'test/**/*.js'; prettier-eslint --write '*.js' 'src/**/*.js' 'test/**/*.js'",
     "prepare": "npm run build",
-    "test": "rollup -c && mocha -r esm -r source-map-support/register test/test.js"
+    "pretest": "rollup -c test/rollup.config.js",
+    "test": "mocha -r source-map-support/register build/tests.js"
   },
@@ -60,3 +61,2 @@ "browser": {
     "eslint-plugin-standard": "^4.0.0",
-    "esm": "^3.0.84",
     "flow-bin": "^0.78.0",
@@ -63,0 +63,0 @@ "husky": "^0.13.3",

src/index.js

 // @flow
 
-export {
+import { makeLocalStorageFolder } from './backends/local-storage.js'
+import { makeMemoryFolder } from './backends/memory.js'
+import { makeNodeFolder } from './backends/node.js'
+import { makeReactNativeFolder } from './backends/react-native.js'
+import {
   locateFile,
@@ -10,9 +14,18 @@ locateFolder,
 } from './helpers.js'
+import { makeLoggedFolder } from './loggedFolder.js'
+import { makeUnionFolder } from './unionFolder.js'
 
-export { makeLocalStorageFolder } from './localStorageFolder.js'
-export { makeLoggedFolder } from './loggedFolder.js'
-export { makeMemoryFolder } from './memoryFolder.js'
-export { makeNodeFolder } from './nodeFolder.js'
-export { makeReactNativeFolder } from './reactNativeFolder.js'
-export { makeUnionFolder } from './unionFolder.js'
+export {
+  locateFile,
+  locateFolder,
+  makeLocalStorageFolder,
+  makeLoggedFolder,
+  makeMemoryFolder,
+  makeNodeFolder,
+  makeReactNativeFolder,
+  makeUnionFolder,
+  mapAllFiles,
+  mapFiles,
+  mapFolders
+}
 
@@ -19,0 +32,0 @@ export type ArrayLike<T> =

src/loggedFolder.js

@@ -0,1 +1,24 @@
+// @flow
+
+import {
+  type ArrayLike,
+  type DiskletFile,
+  type DiskletFolder
+} from './index.js'
+
+type LogOperation =
+  | 'delete file'
+  | 'delete folder'
+  | 'get data'
+  | 'get text'
+  | 'list files'
+  | 'list folders'
+  | 'set data'
+  | 'set text'
+
+type LogOptions = {
+  callback?: (path: string, operation: LogOperation) => mixed,
+  verbose?: boolean
+}
+
 function logConsole (path, operation) {
@@ -5,3 +28,3 @@ console.log(`${operation} "${path}"`)
 
-function log (path, operation, opts) {
+function log (path, operation: LogOperation, opts) {
   const f = opts.callback != null ? opts.callback : logConsole
@@ -15,3 +38,7 @@
 class LoggedFile {
-  constructor (file, path, opts) {
+  _file: DiskletFile
+  _opts: LogOptions
+  _path: string
+
+  constructor (file: DiskletFile, path: string, opts: LogOptions) {
     this._file = file
@@ -22,3 +49,3 @@ this._path = path
 
-  delete () {
+  delete (): Promise<mixed> {
     log(this._path, 'delete file', this._opts)
@@ -28,3 +55,3 @@ return this._file.delete()
 
-  getData () {
+  getData (): Promise<Uint8Array> {
     log(this._path, 'get data', this._opts)
@@ -34,3 +61,3 @@ return this._file.getData()
 
-  getText () {
+  getText (): Promise<string> {
     log(this._path, 'get text', this._opts)
@@ -40,3 +67,3 @@ return this._file.getText()
 
-  setData (data) {
+  setData (data: ArrayLike<number>): Promise<mixed> {
     log(this._path, 'set data', this._opts)
@@ -46,3 +73,3 @@ return this._file.setData(data)
 
-  setText (text) {
+  setText (text: string): Promise<mixed> {
     log(this._path, 'set text', this._opts)
@@ -52,5 +79,4 @@ return this._file.setText(text)
 
-  getPath () {
-    log(this._path, 'get path', this._opts)
-    return this._file
+  getPath (): string {
+    return this._path
   }
@@ -60,3 +86,7 @@ }
 class LoggedFolder {
-  constructor (folder, path, opts) {
+  _folder: DiskletFolder
+  _opts: LogOptions
+  _path: string
+
+  constructor (folder: DiskletFolder, path: string, opts: LogOptions) {
     this._folder = folder
@@ -67,3 +97,3 @@ this._path = path
 
-  delete () {
+  delete (): Promise<mixed> {
     log(this._path, 'delete folder', this._opts)
@@ -73,3 +103,3 @@ return this._folder.delete()
 
-  file (name) {
+  file (name: string): DiskletFile {
     return new LoggedFile(
@@ -82,3 +112,3 @@ this._folder.file(name),
 
-  folder (name) {
+  folder (name: string): DiskletFolder {
     return new LoggedFolder(
@@ -91,3 +121,3 @@ this._folder.folder(name),
 
-  listFiles () {
+  listFiles (): Promise<Array<string>> {
     log(this._path, 'list files', this._opts)
@@ -97,3 +127,3 @@ return this._folder.listFiles()
 
-  listFolders () {
+  listFolders (): Promise<Array<string>> {
     log(this._path, 'list folders', this._opts)
@@ -104,4 +134,7 @@ return this._folder.listFolders()
 
-export function makeLoggedFolder (folder, opts = {}) {
+export function makeLoggedFolder (
+  folder: DiskletFolder,
+  opts: LogOptions = {}
+): DiskletFolder {
   return new LoggedFolder(folder, '', opts)
 }

src/unionFolder.js

@@ -0,2 +1,9 @@
+// @flow
+
 import { mapFiles, mapFolders } from './helpers.js'
+import {
+  type ArrayLike,
+  type DiskletFile,
+  type DiskletFolder
+} from './index.js'
 
@@ -26,3 +33,11 @@ function removeDuplicates (master, fallback) {
 class UnionFile {
-  constructor (master, fallback, whiteout) {
+  _master: DiskletFile
+  _fallback: DiskletFile
+  _whiteout: DiskletFile
+
+  constructor (
+    master: DiskletFile,
+    fallback: DiskletFile,
+    whiteout: DiskletFile
+  ) {
     this._master = master
@@ -33,3 +48,3 @@ this._fallback = fallback
 
-  delete () {
+  delete (): Promise<mixed> {
     return Promise.all([
@@ -41,3 +56,3 @@ this._whiteout.setData([]),
 
-  getData () {
+  getData (): Promise<Uint8Array> {
     return this._master.getData().catch(e =>
@@ -53,3 +68,3 @@ this._whiteout.getData().then(
 
-  getText () {
+  getText (): Promise<string> {
     return this._master.getText().catch(e =>
@@ -65,11 +80,11 @@ this._whiteout.getData().then(
 
-  setData (data) {
+  setData (data: ArrayLike<number>): Promise<mixed> {
     return this._master.setData(data)
   }
 
-  setText (text) {
+  setText (text: string): Promise<mixed> {
     return this._master.setText(text)
   }
 
-  getPath () {
+  getPath (): string {
     throw new Error('Cannot call getPath on a Union Folder')
@@ -84,3 +99,6 @@ }
 export class UnionFolder {
-  constructor (master, fallback) {
+  _master: DiskletFolder
+  _fallback: DiskletFolder
+
+  constructor (master: DiskletFolder, fallback: DiskletFolder) {
     this._master = master
@@ -90,3 +108,3 @@ this._fallback = fallback
 
-  delete () {
+  delete (): Promise<mixed> {
     return Promise.all([
@@ -98,3 +116,3 @@ mapFiles(this, file => file.delete()),
 
-  file (name) {
+  file (name: string): DiskletFile {
     return new UnionFile(
@@ -107,3 +125,3 @@ this._master.file(name),
 
-  folder (name) {
+  folder (name: string): DiskletFolder {
     return new UnionFolder(
@@ -115,3 +133,3 @@ this._master.folder(name),
 
-  listFiles () {
+  listFiles (): Promise<Array<string>> {
     return Promise.all([
@@ -123,3 +141,3 @@ this._master.listFiles(),
 
-  listFolders () {
+  listFolders (): Promise<Array<string>> {
     return Promise.all([
@@ -132,4 +150,7 @@ this._master.listFolders(),
 
-export function makeUnionFolder (master, fallback) {
+export function makeUnionFolder (
+  master: DiskletFolder,
+  fallback: DiskletFolder
+): DiskletFolder {
   return new UnionFolder(master, fallback)
 }

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Improved metrics

Total package byte prevSize

221780

increased by9.41%

Dev dependency count

35

decreased by-2.78%

Lines of code

3071

increased by6.26%

Number of medium supply chain risk alerts

0

decreased by-100%

Worsened metrics

Number of package files

23

decreased by-4.17%

No dependency changes