Struct xtask_wasm::WasmOpt

pub struct WasmOpt {
    pub optimization_level: u32,
    pub shrink_level: u32,
    pub debug_info: bool,
}

Available on crate feature wasm-opt only.

Helper Abstracting the wasm-opt binary from binaryen for easily optimizing your Wasm binary.

Usage

WasmOpt::level(1)
    .shrink(2)
    .optimize("app.wasm")?;

Fields

optimization_level: u32

How much to focus on optimizing code.

shrink_level: u32

How much to focus on shrinking code size.

debug_info: bool

Emit names section in Wasm binary.

Implementations

impl WasmOpt

pub fn level(optimization_level: u32) -> Self

Set the level of code optimization.

pub fn shrink(self, shrink_level: u32) -> Self

Set the level of size shrinking.

pub fn debug(self) -> Self

Preserve debug info.

pub fn optimize(self, binary_path: impl AsRef<Path>) -> Result<Self>

Optimize the Wasm binary provided by binary_path.

This function will execute wasm-opt over the given Wasm binary, downloading it if necessary (cached into the target directory).