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obsidian-dev-utils

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This is the collection of useful functions that you can use for your Obsidian plugin development

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/*
THIS IS A GENERATED/BUNDLED FILE BY ESBUILD
if you want to view the source, please visit the github repository of this plugin
*/

(function initEsm() {
  if (globalThis.process) {
    return;
  }

  const browserProcess = {
    browser: true,
    cwd() {
      return '/';
    },
    env: {},
    platform: 'android'
  };
  globalThis.process = browserProcess;
})();

import {
  MarkdownView,
  TAbstractFile,
  TFile,
  TFolder
} from "obsidian";
import {
  parentFolderPath,
  ViewType
} from "obsidian-typings/implementations";
import { abortSignalAny } from "../AbortController.mjs";
import { getLibDebugger } from "../Debug.mjs";
import { noopAsync } from "../Function.mjs";
import {
  basename,
  dirname,
  extname,
  join
} from "../Path.mjs";
import { resolveValue } from "../ValueProvider.mjs";
import { retryWithTimeoutNotice } from "./AsyncWithNotice.mjs";
import {
  lockEditor,
  unlockEditor
} from "./Editor.mjs";
import {
  asFile,
  asFolder,
  FileSystemType,
  getAbstractFile,
  getAbstractFileOrNull,
  getFile,
  getFileOrNull,
  getFileSystemType,
  getFolder,
  getFolderOrNull,
  getPath,
  isFile,
  isMarkdownFile,
  isNote
} from "./FileSystem.mjs";
import { t } from "./i18n/i18n.mjs";
async function copySafe(app, oldPathOrFile, newPath) {
  const file = getFile(app, oldPathOrFile);
  if (file.path === newPath) {
    return newPath;
  }
  const newFolderPath = parentFolderPath(newPath);
  await createFolderSafe(app, newFolderPath);
  const newAvailablePath = getAvailablePath(app, newPath);
  try {
    await app.vault.copy(file, newAvailablePath);
  } catch (e) {
    if (!await app.vault.exists(newAvailablePath)) {
      throw e;
    }
  }
  return newAvailablePath;
}
async function createFolderSafe(app, path) {
  if (await app.vault.adapter.exists(path)) {
    return false;
  }
  try {
    await app.vault.createFolder(path);
    return true;
  } catch (e) {
    if (!await app.vault.exists(path)) {
      throw e;
    }
    return true;
  }
}
async function createTempFile(app, path) {
  let file = getFileOrNull(app, path);
  if (file) {
    return noopAsync;
  }
  const folderCleanup = await createTempFolder(app, parentFolderPath(path));
  try {
    await app.vault.create(path, "");
  } catch (e) {
    if (!await app.vault.exists(path)) {
      throw e;
    }
  }
  return async () => {
    file = getFile(app, path);
    if (!file.deleted) {
      await app.fileManager.trashFile(file);
    }
    await folderCleanup();
  };
}
async function createTempFolder(app, path) {
  let folder = getFolderOrNull(app, path);
  if (folder) {
    return noopAsync;
  }
  const folderPath = parentFolderPath(path);
  await createTempFolder(app, folderPath);
  const folderCleanup = await createTempFolder(app, parentFolderPath(path));
  await createFolderSafe(app, path);
  return async () => {
    folder = getFolder(app, path);
    if (!folder.deleted) {
      await app.fileManager.trashFile(folder);
    }
    await folderCleanup();
  };
}
function getAbstractFilePathSafe(app, path, type) {
  const abstractFile = getAbstractFileOrNull(app, path);
  if (abstractFile && getFileSystemType(abstractFile) === type) {
    return path;
  }
  return getAvailablePath(app, path);
}
function getAvailablePath(app, path) {
  const ext = extname(path);
  return app.vault.getAvailablePath(join(dirname(path), basename(path, ext)), ext.slice(1));
}
function getFilePathSafe(app, path) {
  return getAbstractFilePathSafe(app, path, FileSystemType.File);
}
function getFolderPathSafe(app, path) {
  return getAbstractFilePathSafe(app, path, FileSystemType.Folder);
}
function getMarkdownFilesSorted(app) {
  return app.vault.getMarkdownFiles().sort((a, b) => a.path.localeCompare(b.path));
}
function getNoteFilesSorted(app) {
  return app.vault.getAllLoadedFiles().filter((file) => isFile(file) && isNote(app, file)).sort((a, b) => a.path.localeCompare(b.path));
}
async function getOrCreateAbstractFileSafe(app, path, type) {
  path = getAbstractFilePathSafe(app, path, type);
  const abstractFile = getAbstractFileOrNull(app, path);
  if (abstractFile) {
    return abstractFile;
  }
  switch (type) {
    case FileSystemType.File:
      return await app.vault.create(path, "");
    case FileSystemType.Folder:
      return await app.vault.createFolder(path);
    default:
      throw new Error(`Invalid file system type: ${type}`);
  }
}
async function getOrCreateFileSafe(app, path) {
  return asFile(await getOrCreateAbstractFileSafe(app, path, FileSystemType.File));
}
async function getOrCreateFolderSafe(app, path) {
  return asFolder(await getOrCreateAbstractFileSafe(app, path, FileSystemType.Folder));
}
function getSafeRenamePath(app, oldPathOrAbstractFile, newPath) {
  const oldPath = getPath(app, oldPathOrAbstractFile);
  if (app.vault.adapter.insensitive) {
    let folderPath = dirname(newPath);
    let nonExistingPath = basename(newPath);
    let folder;
    while (true) {
      folder = getFolderOrNull(app, folderPath, true);
      if (folder) {
        break;
      }
      nonExistingPath = join(basename(folderPath), nonExistingPath);
      folderPath = dirname(folderPath);
    }
    newPath = join(folder.getParentPrefix(), nonExistingPath);
  }
  if (oldPath.toLowerCase() === newPath.toLowerCase()) {
    return newPath;
  }
  return getAvailablePath(app, newPath);
}
async function invokeWithFileSystemLock(app, pathOrFile, fn) {
  const file = getFile(app, pathOrFile);
  await app.vault.process(file, (content) => {
    fn(content);
    return content;
  });
}
function isChild(app, a, b) {
  const aPath = getPath(app, a);
  const bPath = getPath(app, b);
  if (aPath === bPath) {
    return false;
  }
  if (bPath === "/") {
    return true;
  }
  return aPath.startsWith(`${bPath}/`);
}
function isChildOrSelf(app, a, b) {
  const aPath = getPath(app, a);
  const bPath = getPath(app, b);
  return aPath === bPath || isChild(app, a, b);
}
async function isEmptyFolder(app, pathOrFolder) {
  const listedFiles = await listSafe(app, getPath(app, pathOrFolder));
  return listedFiles.files.length === 0 && listedFiles.folders.length === 0;
}
async function listSafe(app, pathOrFolder) {
  const path = getPath(app, pathOrFolder);
  const EMPTY = { files: [], folders: [] };
  if ((await app.vault.adapter.stat(path))?.type !== "folder") {
    return EMPTY;
  }
  try {
    return await app.vault.adapter.list(path);
  } catch (e) {
    if (await app.vault.exists(path)) {
      throw e;
    }
    return EMPTY;
  }
}
async function process(app, pathOrFile, newContentProvider, options = {}) {
  const DEFAULT_RETRY_OPTIONS = {
    shouldFailOnMissingFile: true,
    shouldLockEditorWhileProcessing: true,
    shouldShowTimeoutNotice: true,
    // eslint-disable-next-line no-magic-numbers -- Default value.
    timeoutInMilliseconds: 500
  };
  const fullOptions = { ...DEFAULT_RETRY_OPTIONS, ...options };
  const abortController = new AbortController();
  fullOptions.abortSignal = abortSignalAny(fullOptions.abortSignal, abortController.signal);
  const path = getPath(app, pathOrFile);
  let activeLeafChangeEventRef = null;
  if (fullOptions.shouldLockEditorWhileProcessing) {
    for (const leaf of app.workspace.getLeavesOfType(ViewType.Markdown)) {
      if (leaf.view instanceof MarkdownView && leaf.view.file?.path === path) {
        lockEditor(leaf.view.editor);
      }
    }
    activeLeafChangeEventRef = app.workspace.on("active-leaf-change", (leaf) => {
      if (leaf?.view instanceof MarkdownView && leaf.view.file?.path === path) {
        lockEditor(leaf.view.editor);
      }
    });
  }
  try {
    await retryWithTimeoutNotice({
      async operationFn(abortSignal) {
        abortSignal.throwIfAborted();
        const oldContent = await readSafe(app, pathOrFile);
        abortSignal.throwIfAborted();
        if (oldContent === null) {
          return handleMissingFile();
        }
        const newContent = await resolveValue(newContentProvider, abortSignal, oldContent);
        abortSignal.throwIfAborted();
        if (newContent === null) {
          return false;
        }
        let isSuccess = true;
        const doesFileExist = await invokeFileActionSafe(app, pathOrFile, async (file) => {
          abortSignal.throwIfAborted();
          await app.vault.process(file, (content) => {
            abortSignal.throwIfAborted();
            if (content !== oldContent) {
              getLibDebugger("Vault:process")("Content has changed since it was read. Retrying...", {
                actualContent: content,
                expectedContent: oldContent,
                path: file.path
              });
              isSuccess = false;
              return content;
            }
            return newContent;
          });
          abortSignal.throwIfAborted();
        });
        if (!doesFileExist) {
          return handleMissingFile();
        }
        return isSuccess;
        function handleMissingFile() {
          if (fullOptions.shouldFailOnMissingFile) {
            throw new Error(`File '${path}' not found`);
          }
          return true;
        }
      },
      operationName: t(($) => $.obsidianDevUtils.vault.processFile, { filePath: path }),
      retryOptions: fullOptions,
      shouldShowTimeoutNotice: fullOptions.shouldShowTimeoutNotice
    });
  } finally {
    activeLeafChangeEventRef?.e.offref(activeLeafChangeEventRef);
    for (const leaf of app.workspace.getLeavesOfType(ViewType.Markdown)) {
      if (leaf.view instanceof MarkdownView && leaf.view.file?.path === path) {
        unlockEditor(leaf.view.editor);
      }
    }
  }
}
async function readSafe(app, pathOrFile) {
  let content = null;
  await invokeFileActionSafe(app, pathOrFile, async (file) => {
    await saveNote(app, file);
    content = await app.vault.read(file);
  });
  return content;
}
async function renameSafe(app, oldPathOrAbstractFile, newPath) {
  const oldAbstractFile = getAbstractFile(app, oldPathOrAbstractFile);
  const newAvailablePath = getSafeRenamePath(app, oldPathOrAbstractFile, newPath);
  if (oldAbstractFile.path.toLowerCase() === newAvailablePath.toLowerCase()) {
    if (oldAbstractFile.path !== newPath) {
      await app.fileManager.renameFile(oldAbstractFile, newAvailablePath);
    }
    return newAvailablePath;
  }
  const newFolderPath = parentFolderPath(newAvailablePath);
  await createFolderSafe(app, newFolderPath);
  try {
    await app.fileManager.renameFile(oldAbstractFile, newAvailablePath);
  } catch (e) {
    if (!await app.vault.exists(newAvailablePath) || await app.vault.exists(oldAbstractFile.path)) {
      throw e;
    }
  }
  return newAvailablePath;
}
async function saveNote(app, pathOrFile) {
  if (!isMarkdownFile(app, pathOrFile)) {
    return;
  }
  const path = getPath(app, pathOrFile);
  for (const leaf of app.workspace.getLeavesOfType(ViewType.Markdown)) {
    if (leaf.view instanceof MarkdownView && leaf.view.file?.path === path && leaf.view.dirty) {
      await leaf.view.save();
    }
  }
}
async function invokeFileActionSafe(app, pathOrFile, fileAction) {
  const path = getPath(app, pathOrFile);
  let file = getFileOrNull(app, path);
  if (!file || file.deleted) {
    return false;
  }
  try {
    await fileAction(file);
    return true;
  } catch (e) {
    file = getFileOrNull(app, path);
    if (!file || file.deleted) {
      return false;
    }
    throw e;
  }
}
export {
  copySafe,
  createFolderSafe,
  createTempFile,
  createTempFolder,
  getAbstractFilePathSafe,
  getAvailablePath,
  getFilePathSafe,
  getFolderPathSafe,
  getMarkdownFilesSorted,
  getNoteFilesSorted,
  getOrCreateAbstractFileSafe,
  getOrCreateFileSafe,
  getOrCreateFolderSafe,
  getSafeRenamePath,
  invokeWithFileSystemLock,
  isChild,
  isChildOrSelf,
  isEmptyFolder,
  listSafe,
  process,
  readSafe,
  renameSafe,
  saveNote
};
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../../../src/obsidian/Vault.ts"],
  "sourcesContent": ["/**\n * @packageDocumentation\n *\n * This module provides utility functions for working with the Obsidian Vault.\n */\n\nimport type {\n  App,\n  EventRef,\n  ListedFiles\n} from 'obsidian';\n\nimport {\n  MarkdownView,\n  TAbstractFile,\n  TFile,\n  TFolder\n} from 'obsidian';\nimport {\n  parentFolderPath,\n  ViewType\n} from 'obsidian-typings/implementations';\n\nimport type { RetryOptions } from '../Async.ts';\nimport type { ValueProvider } from '../ValueProvider.ts';\nimport type {\n  PathOrAbstractFile,\n  PathOrFile,\n  PathOrFolder\n} from './FileSystem.ts';\n\nimport { abortSignalAny } from '../AbortController.ts';\nimport { getLibDebugger } from '../Debug.ts';\nimport { noopAsync } from '../Function.ts';\nimport {\n  basename,\n  dirname,\n  extname,\n  join\n} from '../Path.ts';\nimport { resolveValue } from '../ValueProvider.ts';\nimport { retryWithTimeoutNotice } from './AsyncWithNotice.ts';\nimport {\n  lockEditor,\n  unlockEditor\n} from './Editor.ts';\nimport {\n  asFile,\n  asFolder,\n  FileSystemType,\n  getAbstractFile,\n  getAbstractFileOrNull,\n  getFile,\n  getFileOrNull,\n  getFileSystemType,\n  getFolder,\n  getFolderOrNull,\n  getPath,\n  isFile,\n  isMarkdownFile,\n  isNote\n} from './FileSystem.ts';\nimport { t } from './i18n/i18n.ts';\n\n/**\n * Options for {@link process}.\n */\nexport interface ProcessOptions extends RetryOptions {\n  /**\n   * Whether to fail if the file is missing or deleted. Default is `true`.\n   */\n  shouldFailOnMissingFile?: boolean;\n\n  /**\n   * Whether to lock the editor while processing the file. Applicable only for markdown files. Default is `true`.\n   */\n  shouldLockEditorWhileProcessing?: boolean;\n\n  /**\n   * Whether to show a timeout notice. Default is `true`.\n   */\n  shouldShowTimeoutNotice?: boolean;\n}\n\n/**\n * Copies a file safely in the vault.\n *\n * @param app - The application instance.\n * @param oldPathOrFile - The old path or file to copy.\n * @param newPath - The new path to copy the file to.\n * @returns A {@link Promise} that resolves to the new path of the copied file.\n */\nexport async function copySafe(app: App, oldPathOrFile: PathOrFile, newPath: string): Promise<string> {\n  const file = getFile(app, oldPathOrFile);\n\n  if (file.path === newPath) {\n    return newPath;\n  }\n\n  const newFolderPath = parentFolderPath(newPath);\n  await createFolderSafe(app, newFolderPath);\n\n  const newAvailablePath = getAvailablePath(app, newPath);\n\n  try {\n    await app.vault.copy(file, newAvailablePath);\n  } catch (e) {\n    if (!await app.vault.exists(newAvailablePath)) {\n      throw e;\n    }\n  }\n\n  return newAvailablePath;\n}\n\n/**\n * Creates a folder safely in the specified path.\n *\n * @param app - The application instance.\n * @param path - The path of the folder to create.\n * @returns A {@link Promise} that resolves to a boolean indicating whether the folder was created.\n * @throws If an error occurs while creating the folder and it still doesn't exist.\n */\nexport async function createFolderSafe(app: App, path: string): Promise<boolean> {\n  if (await app.vault.adapter.exists(path)) {\n    return false;\n  }\n\n  try {\n    await app.vault.createFolder(path);\n    return true;\n  } catch (e) {\n    if (!await app.vault.exists(path)) {\n      throw e;\n    }\n    return true;\n  }\n}\n\n/**\n * Creates a temporary file in the vault with parent folders if needed.\n *\n * @param app - The application instance.\n * @param path - The path of the file to create.\n * @returns A {@link Promise} that resolves to a function that can be called to delete the temporary file and all its created parents.\n */\nexport async function createTempFile(app: App, path: string): Promise<() => Promise<void>> {\n  let file = getFileOrNull(app, path);\n  if (file) {\n    return noopAsync;\n  }\n\n  const folderCleanup = await createTempFolder(app, parentFolderPath(path));\n\n  try {\n    await app.vault.create(path, '');\n  } catch (e) {\n    if (!await app.vault.exists(path)) {\n      throw e;\n    }\n  }\n\n  return async () => {\n    file = getFile(app, path);\n    if (!file.deleted) {\n      await app.fileManager.trashFile(file);\n    }\n    await folderCleanup();\n  };\n}\n\n/**\n * Creates a temporary folder in the vault with parent folders if needed.\n *\n * @param app - The application instance.\n * @param path - The path of the folder to create.\n * @returns A {@link Promise} that resolves to a function that can be called to delete the temporary folder and all its created parents.\n */\nexport async function createTempFolder(app: App, path: string): Promise<() => Promise<void>> {\n  let folder = getFolderOrNull(app, path);\n  if (folder) {\n    return noopAsync;\n  }\n\n  const folderPath = parentFolderPath(path);\n  await createTempFolder(app, folderPath);\n\n  const folderCleanup = await createTempFolder(app, parentFolderPath(path));\n\n  await createFolderSafe(app, path);\n\n  return async () => {\n    folder = getFolder(app, path);\n    if (!folder.deleted) {\n      await app.fileManager.trashFile(folder);\n    }\n    await folderCleanup();\n  };\n}\n\n/**\n * Gets a safe path for a file or folder.\n *\n * @param app - The application instance.\n * @param path - The path of the file or folder to get a safe path for.\n * @param type - The type of the file system object.\n * @returns The safe path for the file or folder.\n */\nexport function getAbstractFilePathSafe(app: App, path: string, type: FileSystemType): string {\n  const abstractFile = getAbstractFileOrNull(app, path);\n\n  if (abstractFile && getFileSystemType(abstractFile) === type) {\n    return path;\n  }\n\n  return getAvailablePath(app, path);\n}\n\n/**\n * Gets an available path for a file in the vault.\n *\n * @param app - The application instance.\n * @param path - The path of the file to get an available path for.\n * @returns The available path for the file.\n */\nexport function getAvailablePath(app: App, path: string): string {\n  const ext = extname(path);\n  return app.vault.getAvailablePath(join(dirname(path), basename(path, ext)), ext.slice(1));\n}\n\n/**\n * Gets a safe file path for a file or folder.\n *\n * @param app - The application instance.\n * @param path - The path of the file or folder to get a safe path for.\n * @returns The safe path for the file or folder.\n */\nexport function getFilePathSafe(app: App, path: string): string {\n  return getAbstractFilePathSafe(app, path, FileSystemType.File);\n}\n\n/**\n * Gets a safe folder path for a file or folder.\n *\n * @param app - The application instance.\n * @param path - The path of the file or folder to get a safe path for.\n * @returns The safe path for the file or folder.\n */\nexport function getFolderPathSafe(app: App, path: string): string {\n  return getAbstractFilePathSafe(app, path, FileSystemType.Folder);\n}\n\n/**\n * Retrieves an array of Markdown files from the app's vault and sorts them alphabetically by their file path.\n *\n * @param app - The Obsidian app instance.\n * @returns An array of Markdown files sorted by file path.\n */\nexport function getMarkdownFilesSorted(app: App): TFile[] {\n  return app.vault.getMarkdownFiles().sort((a, b) => a.path.localeCompare(b.path));\n}\n\n/**\n * Retrieves an array of all note files from the app's vault and sorts them alphabetically by their file path.\n *\n * @param app - The Obsidian app instance.\n * @returns An array of all note files in the vault sorted by file path.\n */\nexport function getNoteFilesSorted(app: App): TFile[] {\n  return app.vault.getAllLoadedFiles().filter((file) => isFile(file) && isNote(app, file)).sort((a, b) => a.path.localeCompare(b.path)) as TFile[];\n}\n\n/**\n * Gets or creates an abstract file safely in the specified path.\n *\n * If the file already exists, it will be returned.\n * If the file does not exist, it will be created and returned.\n *\n * @param app - The application instance.\n * @param path - The path of the abstract file to get or create.\n * @param type - The type of the abstract file to get or create.\n * @returns A {@link Promise} that resolves to the abstract file.\n */\nexport async function getOrCreateAbstractFileSafe(app: App, path: string, type: FileSystemType): Promise<TAbstractFile> {\n  path = getAbstractFilePathSafe(app, path, type);\n  const abstractFile = getAbstractFileOrNull(app, path);\n  if (abstractFile) {\n    return abstractFile;\n  }\n\n  switch (type) {\n    case FileSystemType.File:\n      return await app.vault.create(path, '');\n    case FileSystemType.Folder:\n      return await app.vault.createFolder(path);\n    default:\n      throw new Error(`Invalid file system type: ${type as string}`);\n  }\n}\n\n/**\n * Gets or creates a file safely in the specified path.\n *\n * If the file already exists, it will be returned.\n * If the file does not exist, it will be created and returned.\n *\n * @param app - The application instance.\n * @param path - The path of the file to get or create.\n * @returns A {@link Promise} that resolves to the file.\n */\nexport async function getOrCreateFileSafe(app: App, path: string): Promise<TFile> {\n  return asFile(await getOrCreateAbstractFileSafe(app, path, FileSystemType.File));\n}\n\n/**\n * Gets or creates a folder safely in the specified path.\n *\n * If the folder already exists, it will be returned.\n * If the folder does not exist, it will be created and returned.\n *\n * @param app - The application instance.\n * @param path - The path of the folder to get or create.\n * @returns A {@link Promise} that resolves to the folder.\n */\nexport async function getOrCreateFolderSafe(app: App, path: string): Promise<TFolder> {\n  return asFolder(await getOrCreateAbstractFileSafe(app, path, FileSystemType.Folder));\n}\n\n/**\n * Gets a safe rename path for a file.\n *\n * @param app - The application instance.\n * @param oldPathOrAbstractFile - The old path or abstract file to rename.\n * @param newPath - The new path to rename the abstract file to.\n * @returns The safe rename path for the abstract file.\n */\nexport function getSafeRenamePath(app: App, oldPathOrAbstractFile: PathOrAbstractFile, newPath: string): string {\n  const oldPath = getPath(app, oldPathOrAbstractFile);\n\n  if (app.vault.adapter.insensitive) {\n    let folderPath = dirname(newPath);\n    let nonExistingPath = basename(newPath);\n    let folder: null | TFolder;\n    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition -- There is no elegant way to perform infinite loops.\n    while (true) {\n      folder = getFolderOrNull(app, folderPath, true);\n      if (folder) {\n        break;\n      }\n      nonExistingPath = join(basename(folderPath), nonExistingPath);\n      folderPath = dirname(folderPath);\n    }\n    newPath = join(folder.getParentPrefix(), nonExistingPath);\n  }\n\n  if (oldPath.toLowerCase() === newPath.toLowerCase()) {\n    return newPath;\n  }\n\n  return getAvailablePath(app, newPath);\n}\n\n/**\n * Invokes a function with the file system lock.\n *\n * @param app - The application instance.\n * @param pathOrFile - The path or file to execute the function with the file system lock of.\n * @param fn - The function to execute.\n */\nexport async function invokeWithFileSystemLock(app: App, pathOrFile: PathOrFile, fn: (content: string) => void): Promise<void> {\n  const file = getFile(app, pathOrFile);\n  await app.vault.process(file, (content) => {\n    fn(content);\n    return content;\n  });\n}\n\n/**\n * Checks if a path or file is a child of another path or file.\n *\n * @param app - The application instance.\n * @param a - The first path or file.\n * @param b - The second path or file.\n * @returns A boolean indicating whether the first path or file is a child of the second path or file.\n */\nexport function isChild(app: App, a: PathOrAbstractFile, b: PathOrAbstractFile): boolean {\n  const aPath = getPath(app, a);\n  const bPath = getPath(app, b);\n\n  if (aPath === bPath) {\n    return false;\n  }\n\n  if (bPath === '/') {\n    return true;\n  }\n\n  return aPath.startsWith(`${bPath}/`);\n}\n\n/**\n * Checks if a path or file is a child or self of another path or file.\n *\n * @param app - 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