Build fault when --target wasm32-unknown-unknown --release

[ipconfiger]

in Cargo.toml

[lib]
crate-type = ["cdylib"]

[dependencies]
secp256k1 = {version = "0.30.0", features = ["std", "rand", "serde", "hashes"]}

but when i run cargo build --target wasm32-unknown-unknown --release

error: the wasm*-unknown-unknown targets are not supported by default, you may need to enable the "js" feature. For more information see: https://docs.rs/getrandom/#webassembly-support
   --> /Users/alex/.cargo/registry/src/rsproxy.cn-8f6827c7555bfaf8/getrandom-0.2.15/src/lib.rs:342:9
    |
342 | /         compile_error!("the wasm*-unknown-unknown targets are not supported by \
343 | |                         default, you may need to enable the \"js\" feature. \
344 | |                         For more information see: \
345 | |                         https://docs.rs/getrandom/#webassembly-support");
    | |________________________________________________________________________^

error[E0433]: failed to resolve: use of undeclared crate or module `imp`
   --> /Users/alex/.cargo/registry/src/rsproxy.cn-8f6827c7555bfaf8/getrandom-0.2.15/src/lib.rs:398:9
    |
398 |         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` (lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
The following warnings were emitted during compilation:

[apoelstra]

You need to add an explicit dependency to getrandom in your crate with the js feature turned on.

Historically cargo has not given us any way to do this from rust-bitcoin. Though maybe now that we have weak dependencies it might be possible? Not sure about the interaction between weak dependencies and architecture-specific options.

[ipconfiger]

but how?

[target.wasm32-unknown-unknown.dev-dependencies]
wasm-bindgen-test = "0.3"
getrandom = { version = "0.2", features = ["js"] }

OR

[dependencies]
getrandom = { version = "0.2", features = ["js"] }

But it doesn't works