[feature request] Timers should be usable in Node.js environment

[teohhanhui]

Describe the Bug

Trying to use timers while running in Node.js environment currently panics with:

gloo/crates/timers/src/callback.rs

Line 37 in 2245cd9

panic!("Only supported in a browser or web worker");

Steps to Reproduce

N/A

Expected Behavior

Timers work in Node.js environment.

Actual Behavior

Panic with error message: Only supported in a browser or web worker

Additional Context

Similar to #106

[teohhanhui]

Methods such as set_timeout_with_callback_and_timeout_and_arguments_0 are only available from web_sys, which understandably does not support Node.js...

[PhilippGackstatter]

I would also like to have timers working in node.js because it is one of the blocking issues that prevents the libp2p crate from running in node.js. I'm prepared to work on this and was wondering if a fix would be accepted into the crate? I imagine I would need to use js_sys to call node.js's setTimeout function, but haven't gone deeper into the topic yet. Maybe @hamza1311 can comment on whether such a fix would be accepted and any pointers to get started? Thanks very much!

[ranile]

Assuming that setTimeout and setInterval are available in the global scope, we can use wasm-bindgen to import and use them.

#[wasm_bindgen]
extern {
    #[wasm_bindgen(...)]
    fn set_timeout(...) -> ...;

    #[wasm_bindgen(...)]
    fn set_interval(...) -> ...
}

See relevant docs

Feel free to PR this, @PhilippGackstatter. I would be happy to merge it

[PhilippGackstatter]

Hey @hamza1311, would it be possible to publish a new gloo-timers version relatively soon, perhaps within the next week or so? We'd like to have this available on crates.io. Thanks!

[ranile]

@PhilippGackstatter just published a new patch version with this change.