⚠️ This repository/crate is deprecated and unmaintained: Switch to wasm-instrument in order to use wasm instrumentation (gas metering, stack height limiter) in your project. For wasm code optimization binaryen should be used.

A collection of WASM utilities used in pwasm-ethereum and substrate contract development.

This repository contains the package pwasm-utils which consists of a library crate and a collection of cli binaries that make use of this library.

cargo install pwasm-utils --features cli

This will install the following binaries:

• wasm-build
• wasm-check
• wasm-ext
• wasm-gas
• wasm-pack
• wasm-prune
• wasm-stack-height

wasm-prune <input_wasm_binary.wasm> <output_wasm_binary.wasm>

This will optimize WASM symbols tree to leave only those elements that are used by contract call function entry.

For development purposes, a raw WASM contract can be injected with gas counters (the same way as it done in the pwasm-ethereum/substrate runtime when running contracts)

wasm-gas <input_wasm_binary.wasm> <output_wasm_binary.wasm>

wasm-utils is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), at your choice.

See LICENSE-APACHE, and LICENSE-MIT for details.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in wasm-utils by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.