wasm-pack 可以通过 Cargo.toml 中的 package.metadata.wasm-pack 键进行配置。每个选项都有一个默认值，并且不是必需的。

有三个配置文件：dev、profiling 和 release。它们分别对应于传递给 wasm-pack build 的 --dev、--profiling 和 --release 标志。

下面显示了可用的配置选项及其默认值

[package.metadata.wasm-pack.profile.dev]
# Should `wasm-opt` be used to further optimize the wasm binary generated after
# the Rust compiler has finished? Using `wasm-opt` can often further decrease
# binary size or do clever tricks that haven't made their way into LLVM yet.
#
# Configuration is set to `false` by default for the dev profile, but it can
# be set to an array of strings which are explicit arguments to pass to
# `wasm-opt`. For example `['-Os']` would optimize for size while `['-O4']`
# would execute very expensive optimizations passes
wasm-opt = ['-O']

[package.metadata.wasm-pack.profile.dev.wasm-bindgen]
# Should we enable wasm-bindgen's debug assertions in its generated JS glue?
debug-js-glue = true
# Should wasm-bindgen demangle the symbols in the "name" custom section?
demangle-name-section = true
# Should we emit the DWARF debug info custom sections?
dwarf-debug-info = false
# Should we omit the default import path?
omit-default-module-path = false

[package.metadata.wasm-pack.profile.profiling]
wasm-opt = ['-O']

[package.metadata.wasm-pack.profile.profiling.wasm-bindgen]
debug-js-glue = false
demangle-name-section = true
dwarf-debug-info = false
omit-default-module-path = false

# `wasm-opt` is on by default in for the release profile, but it can be
# disabled by setting it to `false`
[package.metadata.wasm-pack.profile.release]
wasm-opt = false

[package.metadata.wasm-pack.profile.release.wasm-bindgen]
debug-js-glue = false
demangle-name-section = true
dwarf-debug-info = false
omit-default-module-path = false