WhatA compile-time tool that lets Rust developers write a function once and automatically generates both synchronous and asynchronous variants with correct semantics.
SignalDevelopers are frustrated by having to manually duplicate every function to support both blocking and async APIs, and existing community crates like maybe-async and bisync all have hard limitations or unresolved issues that make them unusable in production.
Why NowThe Rust ecosystem is split between sync and async worlds with no official solution on the horizon, and library authors shipping on crates.io increasingly need to support both paradigms as async adoption grows but sync consumers remain the majority.
MarketRust library authors and teams maintaining public crates (~50K published crates, many needing dual APIs); competitors are broken or limited open-source macros; potential to monetize as a premium dev tool or IDE plugin.
MoatSolving function coloring at the macro/compiler level requires deep language expertise, and becoming the standard crate for this creates strong ecosystem lock-in via transitive dependencies.
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