Temporarily use the fix from wasmerio/wasmer#3400

Cargo.toml

@@ -20,3 +20,8 @@ wasmer-vfs = { version = "3.0.2", default-features = false, features = ["mem-fs"
 [profile.release]
 lto = true
 opt-level = 'z'
+
+[patch.crates-io]
+wasmer = { git = "https://github.com/wasmerio/wasmer", default-features = false, features = ["js", "std"], branch = "fix-downcasting" }
+wasmer-wasi = { git = "https://github.com/wasmerio/wasmer", default-features = false, features = ["js"], branch = "fix-downcasting" }
+wasmer-vfs = { git = "https://github.com/wasmerio/wasmer", default-features = false, features = ["mem-fs"], branch = "fix-downcasting" }

pkg/wasmer_wasi_js.d.ts

@@ -176,4 +176,79 @@ export class WASI {
 */
 export class WasmerRuntimeError {
   free(): void;
+/**
+* @returns {Symbol}
+*/
+  static __wbgd_downcast_token(): Symbol;
+}
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+  readonly memory: WebAssembly.Memory;
+  readonly __wbg_wasmerruntimeerror_free: (a: number) => void;
+  readonly wasmerruntimeerror___wbgd_downcast_token: () => number;
+  readonly __wbg_memfs_free: (a: number) => void;
+  readonly memfs_new: (a: number) => void;
+  readonly memfs_from_js: (a: number, b: number) => void;
+  readonly memfs_readDir: (a: number, b: number, c: number, d: number) => void;
+  readonly memfs_createDir: (a: number, b: number, c: number, d: number) => void;
+  readonly memfs_removeDir: (a: number, b: number, c: number, d: number) => void;
+  readonly memfs_removeFile: (a: number, b: number, c: number, d: number) => void;
+  readonly memfs_rename: (a: number, b: number, c: number, d: number, e: number, f: number) => void;
+  readonly memfs_metadata: (a: number, b: number, c: number, d: number) => void;
+  readonly memfs_open: (a: number, b: number, c: number, d: number, e: number) => void;
+  readonly __wbg_jsvirtualfile_free: (a: number) => void;
+  readonly jsvirtualfile_lastAccessed: (a: number) => number;
+  readonly jsvirtualfile_lastModified: (a: number) => number;
+  readonly jsvirtualfile_createdTime: (a: number) => number;
+  readonly jsvirtualfile_size: (a: number) => number;
+  readonly jsvirtualfile_setLength: (a: number, b: number, c: number) => void;
+  readonly jsvirtualfile_read: (a: number, b: number) => void;
+  readonly jsvirtualfile_readString: (a: number, b: number) => void;
+  readonly jsvirtualfile_write: (a: number, b: number, c: number, d: number) => void;
+  readonly jsvirtualfile_writeString: (a: number, b: number, c: number, d: number) => void;
+  readonly jsvirtualfile_flush: (a: number, b: number) => void;
+  readonly jsvirtualfile_seek: (a: number, b: number, c: number) => void;
+  readonly __wbg_wasi_free: (a: number) => void;
+  readonly wasi_new: (a: number, b: number) => void;
+  readonly wasi_fs: (a: number, b: number) => void;
+  readonly wasi_getImports: (a: number, b: number, c: number) => void;
+  readonly wasi_instantiate: (a: number, b: number, c: number, d: number) => void;
+  readonly wasi_start: (a: number, b: number, c: number) => void;
+  readonly wasi_getStdoutBuffer: (a: number, b: number) => void;
+  readonly wasi_getStdoutString: (a: number, b: number) => void;
+  readonly wasi_getStderrBuffer: (a: number, b: number) => void;
+  readonly wasi_getStderrString: (a: number, b: number) => void;
+  readonly wasi_setStdinBuffer: (a: number, b: number, c: number, d: number) => void;
+  readonly wasi_setStdinString: (a: number, b: number, c: number, d: number) => void;
+  readonly canonical_abi_realloc: (a: number, b: number, c: number, d: number) => number;
+  readonly canonical_abi_free: (a: number, b: number, c: number) => void;
+  readonly __wbindgen_malloc: (a: number) => number;
+  readonly __wbindgen_realloc: (a: number, b: number, c: number) => number;
+  readonly __wbindgen_export_2: WebAssembly.Table;
+  readonly __wbindgen_exn_store: (a: number) => void;
+  readonly __wbindgen_add_to_stack_pointer: (a: number) => number;
+  readonly __wbindgen_free: (a: number, b: number) => void;
 }
+
+export type SyncInitInput = BufferSource | WebAssembly.Module;
+/**
+* Instantiates the given `module`, which can either be bytes or
+* a precompiled `WebAssembly.Module`.
+*
+* @param {SyncInitInput} module
+*
+* @returns {InitOutput}
+*/
+export function initSync(module: SyncInitInput): InitOutput;
+
+/**
+* If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {InitInput | Promise<InitInput>} module_or_path
+*
+* @returns {Promise<InitOutput>}
+*/
+export default function init (module_or_path?: InitInput | Promise<InitInput>): Promise<InitOutput>;