catch_all: try_table clause

(module
  ;; Import the error tag and the log function
  (tag $my_error (import "env" "my_error") (param i32))
  (import "env" "log" (func $log))

  (func $try_and_catch (param $value i32)
    ;; catch_all catches any exception thrown
    (block $handler
      (try_table (catch_all $handler)
        (call $might_throw (local.get $value))
      )
      (return)
    )
    ;; Call log to notify user that exception has been thrown
    call $log
  )

  ;; Function that throws an error of type $my_error
  ;; when its parameter is less than 0
  (func $might_throw (param $value i32)
    (local.get $value)
    (i32.const 0)
    (i32.lt_s)
    (if
      (then
        (i32.const 42)
        (throw $my_error)
      )
    )
  )

  (export "try_and_catch" (func $try_and_catch))
)

// Define error tag in JS
const myErrorTag = new WebAssembly.Tag({ parameters: ["i32"] });

// Import the tag and the log function into the module
const env = {
  my_error: myErrorTag,
  log: () => {
    console.log("An error was caught!");
  },
};

WebAssembly.instantiateStreaming(fetch("{%wasm-url%}"), { env }).then(
  // Negative value causes function to throw
  (result) => result.instance.exports.try_and_catch(-1),
);

(try_table (catch_all $handler) ... )

(block $handler
  ...
)