import type { RuntimeVFS } from '../vfs.ts';
import type { QuickJSAsyncContext } from 'quickjs-emscripten';
export declare const MIRAGE_FS_BOOTSTRAP = "\nstd.open = (path, mode) => {\n  const fd = __mirage_open(String(path), String(mode === undefined ? 'r' : mode));\n  if (fd === -2) throw new TypeError('invalid file mode');\n  if (fd < 0) return null;\n  return {\n    readAsString: (max) => __mirage_read(fd, max === undefined ? -1 : (max | 0)),\n    read: () => __mirage_read(fd, -1),\n    getline: () => __mirage_getline(fd),\n    puts: (s) => { __mirage_write(fd, String(s)); },\n    write: (s) => { __mirage_write(fd, String(s)); return String(s).length; },\n    seek: (offset, whence) => { __mirage_seek(fd, offset | 0, whence === undefined ? 0 : (whence | 0)); return 0; },\n    tell: () => __mirage_tell(fd),\n    eof: () => __mirage_eof(fd),\n    flush: () => {},\n    close: () => { __mirage_close(fd); return 0; },\n  };\n};\nglobalThis.os = globalThis.os || {};\nos.readdir = (path) => __mirage_readdir(String(path));\nos.stat = (path) => __mirage_stat(String(path));\nos.remove = (path) => __mirage_remove(String(path));\nos.mkdir = (path) => __mirage_mkdir(String(path));\nos.rename = (a, b) => __mirage_rename(String(a), String(b));\nos.utimes = (path, atime, mtime) => __mirage_utimes(String(path), atime, mtime);\nos.S_IFMT = 61440;\nos.S_IFDIR = 16384;\nos.S_IFCHR = 8192;\nos.S_IFREG = 32768;\nos.S_IFLNK = 40960;\n";
/**
 * Install the `std.open`/`os.readdir` host functions on an asyncified
 * quickjs context, backed by the runtime vfs. A null vfs (no
 * workspace mounts wired) still installs the surface, but every open
 * and readdir fails cleanly — `std.open` returns null and `os.readdir`
 * reports ENOENT — so guest code sees an empty filesystem rather than a
 * missing global.
 *
 * @param ctx - the asyncified quickjs context
 * @param vfs - the runtime's mount vocabulary, or null when no mounts are wired
 */
export declare function installMirageFs(ctx: QuickJSAsyncContext, vfs: RuntimeVFS | null): void;
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