@browsery/fs/cjs/fs.cjs

Browser compatible NodeJS fs module

'use strict';

function panic(api) {
  return function () {
    throw new Error(`fs.${api} is not implemented in browser`);
  };
}

const fsFuncs = [
  'appendFile',
  'appendFileSync',
  'access',
  'accessSync',
  'chown',
  'chownSync',
  'chmod',
  'chmodSync',
  'close',
  'closeSync',
  'copyFile',
  'copyFileSync',
  'createReadStream',
  'createWriteStream',
  'exists',
  'existsSync',
  'fchown',
  'fchownSync',
  'fchmod',
  'fchmodSync',
  'fdatasync',
  'fdatasyncSync',
  'fstat',
  'fstatSync',
  'fsync',
  'fsyncSync',
  'ftruncate',
  'ftruncateSync',
  'futimes',
  'futimesSync',
  'lchown',
  'lchownSync',
  'lchmod',
  'lchmodSync',
  'link',
  'linkSync',
  'lstat',
  'lstatSync',
  'mkdir',
  'mkdirSync',
  'mkdtemp',
  'mkdtempSync',
  'open',
  'openSync',
  'opendir',
  'opendirSync',
  'readdir',
  'readdirSync',
  'read',
  'readSync',
  'readFile',
  'readFileSync',
  'readlink',
  'readlinkSync',
  'realpath',
  'realpathSync',
  'rename',
  'renameSync',
  'rmdir',
  'rmdirSync',
  'stat',
  'statSync',
  'symlink',
  'symlinkSync',
  'truncate',
  'truncateSync',
  'unwatchFile',
  'unlink',
  'unlinkSync',
  'utimes',
  'utimesSync',
  'watch',
  'watchFile',
  'writeFile',
  'writeFileSync',
  'write',
  'writeSync',
  'writev',
  'writevSync',
  'Dir',
  'Dirent',
  'Stats',
  'ReadStream',
  'WriteStream',
  'FileReadStream',
  'FileWriteStream',
];

const promiseFuncs = [
  'access',
  'copyFile',
  'open',
  'opendir',
  'rename',
  'truncate',
  'rmdir',
  'mkdir',
  'readdir',
  'readlink',
  'symlink',
  'lstat',
  'stat',
  'link',
  'unlink',
  'chmod',
  'lchmod',
  'lchown',
  'chown',
  'utimes',
  'realpath',
  'mkdtemp',
  'writeFile',
  'appendFile',
  'readFile',
];

const fs = {
  F_OK: 0,
  R_OK: 4,
  W_OK: 2,
  X_OK: 1,
  constants: {
    UV_FS_SYMLINK_DIR: 1,
    UV_FS_SYMLINK_JUNCTION: 2,
    O_RDONLY: 0,
    O_WRONLY: 1,
    O_RDWR: 2,
    UV_DIRENT_UNKNOWN: 0,
    UV_DIRENT_FILE: 1,
    UV_DIRENT_DIR: 2,
    UV_DIRENT_LINK: 3,
    UV_DIRENT_FIFO: 4,
    UV_DIRENT_SOCKET: 5,
    UV_DIRENT_CHAR: 6,
    UV_DIRENT_BLOCK: 7,
    S_IFMT: 61440,
    S_IFREG: 32768,
    S_IFDIR: 16384,
    S_IFCHR: 8192,
    S_IFBLK: 24576,
    S_IFIFO: 4096,
    S_IFLNK: 40960,
    S_IFSOCK: 49152,
    O_CREAT: 512,
    O_EXCL: 2048,
    UV_FS_O_FILEMAP: 0,
    O_NOCTTY: 131072,
    O_TRUNC: 1024,
    O_APPEND: 8,
    O_DIRECTORY: 1048576,
    O_NOFOLLOW: 256,
    O_SYNC: 128,
    O_DSYNC: 4194304,
    O_SYMLINK: 2097152,
    O_NONBLOCK: 4,
    S_IRWXU: 448,
    S_IRUSR: 256,
    S_IWUSR: 128,
    S_IXUSR: 64,
    S_IRWXG: 56,
    S_IRGRP: 32,
    S_IWGRP: 16,
    S_IXGRP: 8,
    S_IRWXO: 7,
    S_IROTH: 4,
    S_IWOTH: 2,
    S_IXOTH: 1,
    F_OK: 0,
    R_OK: 4,
    W_OK: 2,
    X_OK: 1,
    UV_FS_COPYFILE_EXCL: 1,
    COPYFILE_EXCL: 1,
    UV_FS_COPYFILE_FICLONE: 2,
    COPYFILE_FICLONE: 2,
    UV_FS_COPYFILE_FICLONE_FORCE: 4,
    COPYFILE_FICLONE_FORCE: 4,
  },
  promises: {},
};

let i;
let ii;
let n;
for (i = 0, ii = fsFuncs.length; i < ii; i++) {
  n = fsFuncs[i];
  fs[n] = panic(n);
}

fs.realpath.native = panic('realpath.native');
fs.realpathSync.native = panic('realpathSync.native');

for (i = 0, ii = promiseFuncs.length; i < ii; i++) {
  n = promiseFuncs[i];
  fs.promises[n] = panic('promises.' + n);
}

module.exports = fs;