add basic infrastructure of javascript example

example/provider/javascript/js/webfuse/basefilesystem.js

@@ -0,0 +1,90 @@
+import { ERRNO } from "./errno.js"
+
+class BaseFileSystem {
+
+    access(path, mode) {
+        return ERRNO.ENOENT;
+    }
+
+    getattr(path) {
+        return ERRNO.ENOENT;
+    }
+
+    readlink(path) {
+        return ERRNO.ENOENT;
+    }
+
+    symlink(target, linkpath) {
+        return ERRNO.ENOENT;
+    }
+
+    link(oldpath, newpath) {
+        return ERRNO.ENOENT;
+    }
+
+    rename(oldpath, newpath, flags) {
+        return ERRNO.ENOENT;
+    }
+
+    chmod(path, mode) {
+        return ERRNO.ENOENT;
+    }
+
+    chown(path, uid, gid) {
+        return ERRNO.ENOENT;
+    }
+
+    truncate(path, size, fd) {
+        return ERRNO.ENOENT;
+    }
+
+    open(path, flags) {
+        return [ERRNO.ENOENT, 0];
+    }
+
+    mknod(path, mode, rdev) {
+        return ERRNO.ENOENT;
+    }
+
+    create(path, mode) {
+        return [ERNNO.ENOEND, 0];
+    }
+
+    release(path, fd) {
+        return ERRNO.ENOENT;
+    }
+
+    unlink(path) {
+        return ERRNO.ENOENT;
+    }
+
+    read(path, size, offset, fd) {
+        return ERRNO.ENOENT;
+    }
+
+    write(path, data, offset, fd) {
+        return ERRNO.ENOENT;
+    }
+
+    mkdir(path, mode) {
+        return ERRNO.ENOENT;
+    }
+
+    readdir(path) {
+        return ERRNO.ENOENT;
+    }
+
+    rmdir(path)  {
+        return ERRNO.ENOENT;
+    }
+
+    statfs(path) {
+        return ERRNO.ENOENT;
+    }
+
+    getcreds() {
+        return "";
+    }
+}
+
+export { BaseFileSystem }