browserfs
Version:
A filesystem in your browser!
339 lines • 46.2 kB
JavaScript
"use strict";
var BrowserFS = require('../core/browserfs');
var fs = require('../core/node_fs');
var util_1 = require('../core/util');
var BFSEmscriptenStreamOps = (function () {
function BFSEmscriptenStreamOps(fs) {
this.fs = fs;
this.nodefs = fs.getNodeFS();
this.FS = fs.getFS();
this.PATH = fs.getPATH();
this.ERRNO_CODES = fs.getERRNO_CODES();
}
BFSEmscriptenStreamOps.prototype.open = function (stream) {
var path = this.fs.realPath(stream.node), FS = this.FS;
try {
if (FS.isFile(stream.node.mode)) {
stream.nfd = this.nodefs.openSync(path, this.fs.flagsToPermissionString(stream.flags));
}
}
catch (e) {
if (!e.code)
throw e;
throw new FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenStreamOps.prototype.close = function (stream) {
var FS = this.FS;
try {
if (FS.isFile(stream.node.mode) && stream.nfd) {
this.nodefs.closeSync(stream.nfd);
}
}
catch (e) {
if (!e.code)
throw e;
throw new FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenStreamOps.prototype.read = function (stream, buffer, offset, length, position) {
try {
return this.nodefs.readSync(stream.nfd, util_1.uint8Array2Buffer(buffer), offset, length, position);
}
catch (e) {
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenStreamOps.prototype.write = function (stream, buffer, offset, length, position) {
try {
return this.nodefs.writeSync(stream.nfd, util_1.uint8Array2Buffer(buffer), offset, length, position);
}
catch (e) {
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenStreamOps.prototype.llseek = function (stream, offset, whence) {
var position = offset;
if (whence === 1) {
position += stream.position;
}
else if (whence === 2) {
if (this.FS.isFile(stream.node.mode)) {
try {
var stat = this.nodefs.fstatSync(stream.nfd);
position += stat.size;
}
catch (e) {
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
}
}
if (position < 0) {
throw new this.FS.ErrnoError(this.ERRNO_CODES.EINVAL);
}
stream.position = position;
return position;
};
return BFSEmscriptenStreamOps;
}());
var BFSEmscriptenNodeOps = (function () {
function BFSEmscriptenNodeOps(fs) {
this.fs = fs;
this.nodefs = fs.getNodeFS();
this.FS = fs.getFS();
this.PATH = fs.getPATH();
this.ERRNO_CODES = fs.getERRNO_CODES();
}
BFSEmscriptenNodeOps.prototype.getattr = function (node) {
var path = this.fs.realPath(node);
var stat;
try {
stat = this.nodefs.lstatSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
return {
dev: stat.dev,
ino: stat.ino,
mode: stat.mode,
nlink: stat.nlink,
uid: stat.uid,
gid: stat.gid,
rdev: stat.rdev,
size: stat.size,
atime: stat.atime,
mtime: stat.mtime,
ctime: stat.ctime,
blksize: stat.blksize,
blocks: stat.blocks
};
};
BFSEmscriptenNodeOps.prototype.setattr = function (node, attr) {
var path = this.fs.realPath(node);
try {
if (attr.mode !== undefined) {
this.nodefs.chmodSync(path, attr.mode);
node.mode = attr.mode;
}
if (attr.timestamp !== undefined) {
var date = new Date(attr.timestamp);
this.nodefs.utimesSync(path, date, date);
}
}
catch (e) {
if (!e.code)
throw e;
if (e.code !== "ENOTSUP") {
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
}
if (attr.size !== undefined) {
try {
this.nodefs.truncateSync(path, attr.size);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
}
};
BFSEmscriptenNodeOps.prototype.lookup = function (parent, name) {
var path = this.PATH.join2(this.fs.realPath(parent), name);
var mode = this.fs.getMode(path);
return this.fs.createNode(parent, name, mode);
};
BFSEmscriptenNodeOps.prototype.mknod = function (parent, name, mode, dev) {
var node = this.fs.createNode(parent, name, mode, dev);
var path = this.fs.realPath(node);
try {
if (this.FS.isDir(node.mode)) {
this.nodefs.mkdirSync(path, node.mode);
}
else {
this.nodefs.writeFileSync(path, '', { mode: node.mode });
}
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
return node;
};
BFSEmscriptenNodeOps.prototype.rename = function (oldNode, newDir, newName) {
var oldPath = this.fs.realPath(oldNode);
var newPath = this.PATH.join2(this.fs.realPath(newDir), newName);
try {
this.nodefs.renameSync(oldPath, newPath);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenNodeOps.prototype.unlink = function (parent, name) {
var path = this.PATH.join2(this.fs.realPath(parent), name);
try {
this.nodefs.unlinkSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenNodeOps.prototype.rmdir = function (parent, name) {
var path = this.PATH.join2(this.fs.realPath(parent), name);
try {
this.nodefs.rmdirSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenNodeOps.prototype.readdir = function (node) {
var path = this.fs.realPath(node);
try {
return this.nodefs.readdirSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenNodeOps.prototype.symlink = function (parent, newName, oldPath) {
var newPath = this.PATH.join2(this.fs.realPath(parent), newName);
try {
this.nodefs.symlinkSync(oldPath, newPath);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
BFSEmscriptenNodeOps.prototype.readlink = function (node) {
var path = this.fs.realPath(node);
try {
return this.nodefs.readlinkSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
};
return BFSEmscriptenNodeOps;
}());
var BFSEmscriptenFS = (function () {
function BFSEmscriptenFS(_FS, _PATH, _ERRNO_CODES, nodefs) {
if (_FS === void 0) { _FS = self['FS']; }
if (_PATH === void 0) { _PATH = self['PATH']; }
if (_ERRNO_CODES === void 0) { _ERRNO_CODES = self['ERRNO_CODES']; }
if (nodefs === void 0) { nodefs = fs; }
this.flagsToPermissionStringMap = {
0: 'r',
1: 'r+',
2: 'r+',
64: 'r',
65: 'r+',
66: 'r+',
129: 'rx+',
193: 'rx+',
514: 'w+',
577: 'w',
578: 'w+',
705: 'wx',
706: 'wx+',
1024: 'a',
1025: 'a',
1026: 'a+',
1089: 'a',
1090: 'a+',
1153: 'ax',
1154: 'ax+',
1217: 'ax',
1218: 'ax+',
4096: 'rs',
4098: 'rs+'
};
if (typeof BrowserFS === 'undefined') {
throw new Error("BrowserFS is not loaded. Please load it before this library.");
}
this.nodefs = nodefs;
this.FS = _FS;
this.PATH = _PATH;
this.ERRNO_CODES = _ERRNO_CODES;
this.node_ops = new BFSEmscriptenNodeOps(this);
this.stream_ops = new BFSEmscriptenStreamOps(this);
}
BFSEmscriptenFS.prototype.mount = function (mount) {
return this.createNode(null, '/', this.getMode(mount.opts.root), 0);
};
BFSEmscriptenFS.prototype.createNode = function (parent, name, mode, dev) {
var FS = this.FS;
if (!FS.isDir(mode) && !FS.isFile(mode) && !FS.isLink(mode)) {
throw new FS.ErrnoError(this.ERRNO_CODES.EINVAL);
}
var node = FS.createNode(parent, name, mode);
node.node_ops = this.node_ops;
node.stream_ops = this.stream_ops;
return node;
};
BFSEmscriptenFS.prototype.getMode = function (path) {
var stat;
try {
stat = this.nodefs.lstatSync(path);
}
catch (e) {
if (!e.code)
throw e;
throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);
}
return stat.mode;
};
BFSEmscriptenFS.prototype.realPath = function (node) {
var parts = [];
while (node.parent !== node) {
parts.push(node.name);
node = node.parent;
}
parts.push(node.mount.opts.root);
parts.reverse();
return this.PATH.join.apply(null, parts);
};
BFSEmscriptenFS.prototype.flagsToPermissionString = function (flags) {
var parsedFlags = (typeof flags === "string") ? parseInt(flags, 10) : flags;
parsedFlags &= 0x1FFF;
if (parsedFlags in this.flagsToPermissionStringMap) {
return this.flagsToPermissionStringMap[parsedFlags];
}
else {
return flags;
}
};
BFSEmscriptenFS.prototype.getNodeFS = function () {
return this.nodefs;
};
BFSEmscriptenFS.prototype.getFS = function () {
return this.FS;
};
BFSEmscriptenFS.prototype.getPATH = function () {
return this.PATH;
};
BFSEmscriptenFS.prototype.getERRNO_CODES = function () {
return this.ERRNO_CODES;
};
return BFSEmscriptenFS;
}());
exports.__esModule = true;
exports["default"] = BFSEmscriptenFS;
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Allows you to use synchronous BrowserFS file systems from within\n * Emscripten.\n *\n * You can construct a BFSEmscriptenFS, mount it using its mount command,\n * and then mount it into Emscripten.\n *\n * Adapted from Emscripten's NodeFS:\n * https://raw.github.com/kripken/emscripten/master/src/library_nodefs.js\n */\nimport BrowserFS = require('../core/browserfs');\nimport FS from '../core/FS';\nimport fs = require('../core/node_fs');\nimport NodeStats from '../core/node_fs_stats';\nimport {uint8Array2Buffer} from '../core/util';\n\nexport interface Stats {\n  dev: number;\n  ino: number;\n  mode: number;\n  nlink: number;\n  uid: number;\n  gid: number;\n  rdev: number;\n  size: number;\n  blksize: number;\n  blocks: number;\n  atime: Date;\n  mtime: Date;\n  ctime: Date;\n  timestamp?: number;\n}\n\nexport interface EmscriptenFSNode {\n  name: string;\n  mode: number;\n  parent: EmscriptenFSNode;\n  mount: {opts: {root: string}};\n  stream_ops: EmscriptenStreamOps;\n  node_ops: 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number, length: number, position: number): number;\n  write(stream: EmscriptenStream, buffer: Uint8Array, offset: number, length: number, position: number): number;\n  llseek(stream: EmscriptenStream, offset: number, whence: number): number;\n}\n\nexport interface EmscriptenFS {\n  mount(mount: {opts: {root: string}}): EmscriptenFSNode;\n  createNode(parent: EmscriptenFSNode, name: string, mode: number, dev?: any): EmscriptenFSNode;\n  getMode(path: string): number;\n  realPath(node: EmscriptenFSNode): string;\n  node_ops: EmscriptenNodeOps;\n  stream_ops: EmscriptenStreamOps;\n}\n\nclass BFSEmscriptenStreamOps implements EmscriptenStreamOps {\n  private FS: any;\n  private PATH: any;\n  private ERRNO_CODES: any;\n  private nodefs: FS;\n\n  constructor(private fs: BFSEmscriptenFS) {\n    this.nodefs = fs.getNodeFS();\n    this.FS = fs.getFS();\n    this.PATH = fs.getPATH();\n    this.ERRNO_CODES = fs.getERRNO_CODES();\n  }\n\n  public open(stream: EmscriptenStream): void {\n    var path = this.fs.realPath(stream.node),\n      FS = this.FS;\n    try {\n      if (FS.isFile(stream.node.mode)) {\n        stream.nfd = this.nodefs.openSync(path, this.fs.flagsToPermissionString(stream.flags));\n      }\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public close(stream: EmscriptenStream): void {\n    var FS = this.FS;\n    try {\n      if (FS.isFile(stream.node.mode) && stream.nfd) {\n        this.nodefs.closeSync(stream.nfd);\n      }\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public read(stream: EmscriptenStream, buffer: Uint8Array, offset: number, length: number, position: number): number {\n    // Avoid copying overhead by reading directly into buffer.\n    try {\n      return this.nodefs.readSync(stream.nfd, uint8Array2Buffer(buffer), offset, length, position);\n    } catch (e) {\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public write(stream: EmscriptenStream, buffer: Uint8Array, offset: number, length: number, position: number): number {\n    // Avoid copying overhead.\n    try {\n      return this.nodefs.writeSync(stream.nfd, uint8Array2Buffer(buffer), offset, length, position);\n    } catch (e) {\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public llseek(stream: EmscriptenStream, offset: number, whence: number): number {\n    var position = offset;\n    if (whence === 1) {  // SEEK_CUR.\n      position += stream.position;\n    } else if (whence === 2) {  // SEEK_END.\n      if (this.FS.isFile(stream.node.mode)) {\n        try {\n          var stat = this.nodefs.fstatSync(stream.nfd);\n          position += stat.size;\n        } catch (e) {\n          throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n        }\n      }\n    }\n\n    if (position < 0) {\n      throw new this.FS.ErrnoError(this.ERRNO_CODES.EINVAL);\n    }\n\n    stream.position = position;\n    return position;\n  }\n}\n\nclass BFSEmscriptenNodeOps implements EmscriptenNodeOps {\n  private FS: any;\n  private PATH: any;\n  private ERRNO_CODES: any;\n  private nodefs: FS;\n\n  constructor(private fs: BFSEmscriptenFS) {\n    this.nodefs = fs.getNodeFS();\n    this.FS = fs.getFS();\n    this.PATH = fs.getPATH();\n    this.ERRNO_CODES = fs.getERRNO_CODES();\n  }\n\n  public getattr(node: EmscriptenFSNode): Stats {\n    var path = this.fs.realPath(node);\n    var stat: NodeStats;\n    try {\n      stat = this.nodefs.lstatSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n    return {\n      dev: stat.dev,\n      ino: stat.ino,\n      mode: stat.mode,\n      nlink: stat.nlink,\n      uid: stat.uid,\n      gid: stat.gid,\n      rdev: stat.rdev,\n      size: stat.size,\n      atime: stat.atime,\n      mtime: stat.mtime,\n      ctime: stat.ctime,\n      blksize: stat.blksize,\n      blocks: stat.blocks\n    };\n  }\n\n  public setattr(node: EmscriptenFSNode, attr: Stats): void {\n    var path = this.fs.realPath(node);\n    try {\n      if (attr.mode !== undefined) {\n        this.nodefs.chmodSync(path, attr.mode);\n        // update the common node structure mode as well\n        node.mode = attr.mode;\n      }\n      if (attr.timestamp !== undefined) {\n        var date = new Date(attr.timestamp);\n        this.nodefs.utimesSync(path, date, date);\n      }\n    } catch (e) {\n      if (!e.code) throw e;\n      // Ignore not supported errors. Emscripten does utimesSync when it\n      // writes files, but never really requires the value to be set.\n      if (e.code !== \"ENOTSUP\") {\n        throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n      }\n    }\n    if (attr.size !== undefined) {\n      try {\n        this.nodefs.truncateSync(path, attr.size);\n      } catch (e) {\n        if (!e.code) throw e;\n        throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n      }\n    }\n  }\n\n  public lookup(parent: EmscriptenFSNode, name: string): EmscriptenFSNode {\n    var path = this.PATH.join2(this.fs.realPath(parent), name);\n    var mode = this.fs.getMode(path);\n    return this.fs.createNode(parent, name, mode);\n  }\n\n  public mknod(parent: EmscriptenFSNode, name: string, mode: number, dev: any): EmscriptenFSNode {\n    var node = this.fs.createNode(parent, name, mode, dev);\n    // create the backing node for this in the fs root as well\n    var path = this.fs.realPath(node);\n    try {\n      if (this.FS.isDir(node.mode)) {\n        this.nodefs.mkdirSync(path, node.mode);\n      } else {\n        this.nodefs.writeFileSync(path, '', { mode: node.mode });\n      }\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n    return node;\n  }\n\n  public rename(oldNode: EmscriptenFSNode, newDir: EmscriptenFSNode, newName: string): void {\n    var oldPath = this.fs.realPath(oldNode);\n    var newPath = this.PATH.join2(this.fs.realPath(newDir), newName);\n    try {\n      this.nodefs.renameSync(oldPath, newPath);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public unlink(parent: EmscriptenFSNode, name: string): void {\n    var path = this.PATH.join2(this.fs.realPath(parent), name);\n    try {\n      this.nodefs.unlinkSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public rmdir(parent: EmscriptenFSNode, name: string) {\n    var path = this.PATH.join2(this.fs.realPath(parent), name);\n    try {\n      this.nodefs.rmdirSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public readdir(node: EmscriptenFSNode): string[] {\n    var path = this.fs.realPath(node);\n    try {\n      return this.nodefs.readdirSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public symlink(parent: EmscriptenFSNode, newName: string, oldPath: string): void {\n    var newPath = this.PATH.join2(this.fs.realPath(parent), newName);\n    try {\n      this.nodefs.symlinkSync(oldPath, newPath);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n\n  public readlink(node: EmscriptenFSNode): string {\n    var path = this.fs.realPath(node);\n    try {\n      return this.nodefs.readlinkSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n  }\n}\n\nexport default class BFSEmscriptenFS implements EmscriptenFS {\n  private FS: any;\n  private PATH: any;\n  private ERRNO_CODES: any;\n  private nodefs: FS;\n  constructor(_FS = (<any> self)['FS'], _PATH = (<any> self)['PATH'], _ERRNO_CODES = (<any> self)['ERRNO_CODES'], nodefs: FS = fs) {\n    if (typeof BrowserFS === 'undefined') {\n      throw new Error(\"BrowserFS is not loaded. Please load it before this library.\");\n    }\n    this.nodefs = nodefs;\n    this.FS = _FS;\n    this.PATH = _PATH;\n    this.ERRNO_CODES = _ERRNO_CODES;\n    this.node_ops = new BFSEmscriptenNodeOps(this);\n    this.stream_ops = new BFSEmscriptenStreamOps(this);\n  }\n\n  public mount(mount: {opts: {root: string}}): EmscriptenFSNode {\n    return this.createNode(null, '/', this.getMode(mount.opts.root), 0);\n  }\n\n  public createNode(parent: EmscriptenFSNode, name: string, mode: number, dev?: any): EmscriptenFSNode {\n    var FS = this.FS;\n    if (!FS.isDir(mode) && !FS.isFile(mode) && !FS.isLink(mode)) {\n      throw new FS.ErrnoError(this.ERRNO_CODES.EINVAL);\n    }\n    var node = FS.createNode(parent, name, mode);\n    node.node_ops = this.node_ops;\n    node.stream_ops = this.stream_ops;\n    return node;\n  }\n\n  public getMode(path: string): number {\n    var stat: NodeStats;\n    try {\n      stat = this.nodefs.lstatSync(path);\n    } catch (e) {\n      if (!e.code) throw e;\n      throw new this.FS.ErrnoError(this.ERRNO_CODES[e.code]);\n    }\n    return stat.mode;\n  }\n\n  public realPath(node: EmscriptenFSNode): string {\n    var parts: string[] = [];\n    while (node.parent !== node) {\n      parts.push(node.name);\n      node = node.parent;\n    }\n    parts.push(node.mount.opts.root);\n    parts.reverse();\n    return this.PATH.join.apply(null, parts);\n  }\n  // This maps the integer permission modes from http://linux.die.net/man/3/open\n  // to node.js-specific file open permission strings at http://nodejs.org/api/fs.html#fs_fs_open_path_flags_mode_callback\n  public flagsToPermissionStringMap = {\n    0/*O_RDONLY*/: 'r',\n    1/*O_WRONLY*/: 'r+',\n    2/*O_RDWR*/: 'r+',\n    64/*O_CREAT*/: 'r',\n    65/*O_WRONLY|O_CREAT*/: 'r+',\n    66/*O_RDWR|O_CREAT*/: 'r+',\n    129/*O_WRONLY|O_EXCL*/: 'rx+',\n    193/*O_WRONLY|O_CREAT|O_EXCL*/: 'rx+',\n    514/*O_RDWR|O_TRUNC*/: 'w+',\n    577/*O_WRONLY|O_CREAT|O_TRUNC*/: 'w',\n    578/*O_CREAT|O_RDWR|O_TRUNC*/: 'w+',\n    705/*O_WRONLY|O_CREAT|O_EXCL|O_TRUNC*/: 'wx',\n    706/*O_RDWR|O_CREAT|O_EXCL|O_TRUNC*/: 'wx+',\n    1024/*O_APPEND*/: 'a',\n    1025/*O_WRONLY|O_APPEND*/: 'a',\n    1026/*O_RDWR|O_APPEND*/: 'a+',\n    1089/*O_WRONLY|O_CREAT|O_APPEND*/: 'a',\n    1090/*O_RDWR|O_CREAT|O_APPEND*/: 'a+',\n    1153/*O_WRONLY|O_EXCL|O_APPEND*/: 'ax',\n    1154/*O_RDWR|O_EXCL|O_APPEND*/: 'ax+',\n    1217/*O_WRONLY|O_CREAT|O_EXCL|O_APPEND*/: 'ax',\n    1218/*O_RDWR|O_CREAT|O_EXCL|O_APPEND*/: 'ax+',\n    4096/*O_RDONLY|O_DSYNC*/: 'rs',\n    4098/*O_RDWR|O_DSYNC*/: 'rs+'\n  }\n\n  public flagsToPermissionString(flags: string): string {\n    var parsedFlags = (typeof flags === \"string\") ? parseInt(flags, 10) : <number><any> flags;\n    parsedFlags &= 0x1FFF;\n    if (parsedFlags in this.flagsToPermissionStringMap) {\n      return (<any> this.flagsToPermissionStringMap)[parsedFlags];\n    } else {\n      return flags;\n    }\n  }\n\n  public getNodeFS() {\n    return this.nodefs;\n  }\n\n  public getFS() {\n    return this.FS;\n  }\n\n  public getPATH() {\n    return this.PATH;\n  }\n\n  public getERRNO_CODES() {\n    return this.ERRNO_CODES;\n  }\n\n  public node_ops: EmscriptenNodeOps;\n  public stream_ops: EmscriptenStreamOps;\n}\n"]}