saghul/wasi-lab

Some WASI experiments 🧪☣️☠️

saghul's WASI lab

Just some WASI experiments.

Experiments

wasiduk

Duktape JavaScript engine running on WASI.

Status: Runs! Crashes on uncaught excaptions (bug or feature?). Minimal repl.

qjs-wasi

QuickJS JavaScript engine running on WASI.

Status. Runs!

License

All embedded projects retain their respective changes. Changes made to them and the build files in this repository are licensed under the Apache 2 license.

wasi-lab's Issues

Error running qjs build on python or ruby wasm ext

So it is possible to compile qjuicks to wasm module. However when trying use it with python for example:

from wasmer import Instance

wasm_bytes = open('./build/qjs.wasm', 'rb').read()
instance = Instance(wasm_bytes)
print('#########')
print(instance.exports)

I get the following error:

> python3 test.py
Traceback (most recent call last):
  File "test.py", line 4, in <module>
    instance = Instance(wasm_bytes)
RuntimeError: Failed to instantiate the module:
    19 link errors: (1 of 19) Import not found, namespace: wasi_unstable, name: fd_prestat_get (2 of 19) Import not found, namespace: wasi_unstable, name: fd_prestat_dir_name (3 of 19) Import not found, namespace: wasi_unstable, name: environ_sizes_get (4 of 19) Import not found, namespace: wasi_unstable, name: environ_get (5 of 19) Import not found, namespace: wasi_unstable, name: args_sizes_get (6 of 19) Import not found, namespace: wasi_unstable, name: args_get (7 of 19) Import not found, namespace: wasi_unstable, name: fd_read (8 of 19) Import not found, namespace: wasi_unstable, name: fd_seek (9 of 19) Import not found, namespace: wasi_unstable, name: fd_write (10 of 19) Import not found, namespace: wasi_unstable, name: fd_close (11 of 19) Import not found, namespace: wasi_unstable, name: clock_time_get (12 of 19) Import not found, namespace: wasi_unstable, name: poll_oneoff (13 of 19) Import not found, namespace: wasi_unstable, name: proc_exit (14 of 19) Import not found, namespace: wasi_unstable, name: fd_fdstat_get (15 of 19) Import not found, namespace: wasi_unstable, name: path_open (16 of 19) Import not found, namespace: wasi_unstable, name: path_rename (17 of 19) Import not found, namespace: wasi_unstable, name: path_unlink_file (18 of 19) Import not found, namespace: wasi_unstable, name: path_remove_directory (19 of 19) Import not found, namespace: wasi_unstable, name: fd_fdstat_set_flags

How to go about this?

New quickjs versions

Hi, there's been a new version of quickjs released since you last updated the repository (up to 2020-04-12 now). Would you be interested in still updating this package/patch? If you're not, I've forked your patch to robot-rumble/qjs-wasi and intend on keeping it up to date; I'd love to update the quickjs wapm package along with it, if you'd like to transfer/add maintainership.

Compiling for DFINITY

I stumbled upon this project while trying to find a solution to run javascirpt on DFINITY(dfinity.org). To do so I need a wasm module that I can define a .did file for. Given these two things I should be able to run C code in a dfinity canister. I've successfully accomplished this using the example at https://github.com/skilesare/examples/tree/master/c/reverse.

I'd love to get either duktape or quickjs running. All I really need is the ability to submit some code and have it evaluated. I guess I also need to keep track of the current context I'm running in as well. Theoretically dfinity has orthogonal persistance so once the context is up and running it should stay that way. It might be a fun project and I'd love to at least get some pointers on where to start. I know very little about c and haven't compiled anything significant in it in about 25 years so some hand holding would be required.