Where to enable "js" for wasm-bindgen

[marvellous987]

Hi, I am trying to compile my program into WebAssembly using wasm-bindgen, but I got the following errors:

error: the wasm32-unknown-unknown target is not supported by default, you may need to enable the "js" feature. For more information see: https://docs.rs/getrandom/#webassembly-support
   --> /Users/xxx/.cargo/registry/src/github.com-1ecc6299db9ec823/getrandom-0.2.7/src/lib.rs:235:9
    |
235 | /         compile_error!("the wasm32-unknown-unknown target is not supported by \
236 | |                         default, you may need to enable the \"js\" feature. \
237 | |                         For more information see: \
238 | |                         https://docs.rs/getrandom/#webassembly-support");
    | |________________________________________________________________________^

error[E0433]: failed to resolve: use of undeclared crate or module `imp`
   --> /Users/xxx/.cargo/registry/src/github.com-1ecc6299db9ec823/getrandom-0.2.7/src/lib.rs:262:5
    |
262 |     imp::getrandom_inner(dest)
    |     ^^^ use of undeclared crate or module `imp`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `getrandom` due to 2 previous errors

May I ask where I can enable the "js" feature, as shown in https://docs.rs/getrandom/latest/getrandom/#webassembly-support? Or are there any other solutions?

Thank you!

[vdods]

You want to enable the "js" feature on the getrandom crate itself. Even if your crate doesn't directly depend on it, you'll want to add a line like
getrandom = { version = "0.2", features = ["js"] }

[josephlr]

@vdods is correct. We explain this in our docs for the custom feature, but we should also explain how to do it for the js feature, as that is more common.

[newpavlov]

I think we close this issue considering #280 is merged.