matrix-rust-sdk

use std::{env, process};

fn main() {

    // Prevent unnecessary rerunning of this build script

    println!("cargo:rerun-if-changed=build.rs");

    let is_wasm = env::var_os("CARGO_CFG_TARGET_ARCH").is_some_and(|arch| arch == "wasm32");

    if is_wasm && env::var_os("CARGO_FEATURE_JS").is_none() {

        eprintln!(

            "\n\

            ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓\n\

            ┃ error: matrix-sdk currently requires a JavaScript environment for WASM. ┃\n\

            ┃        Please activate the `js` Cargo feature if this is what you want. ┃\n\

            ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛\n\

            ",

        );

        process::exit(1);

    }

}