Crate whisker_cng 

Whisker CNG (Continuous Native Generation).

Renders the Android / iOS host projects under gen/{android,ios}/ from the user’s whisker.rs (= whisker_config::Config). Drift between the in-tree files and the current config is detected via a content-hashed fingerprint stored alongside each generated tree (gen/<platform>/.whisker-fingerprint).

Modelled on Expo’s CNG: the source of truth is the declarative config, the platforms directory are build artifacts (never committed). Unlike Expo, regeneration is implicit — there’s no separate whisker generate command. Whichever command needs the native tree (today: whisker run) calls sync_android / sync_ios first; the fast path (fingerprint match) is a single file read and returns instantly.

Public entry points

• sync_android / sync_ios — render-or-skip for one platform. Returns whether files were actually rewritten.
• AndroidInputs / IosInputs — the renderer’s input bundle. Build them yourself for full control, or use android::inputs_from / ios::inputs_from for the “extract from Config + defaults” path.

The crate has no CLI surface and shells out to nothing — whisker-cli is responsible for running xcodegen, gradle, etc. after a sync completes. Keeping side-effects out of the renderer makes it cheap to unit-test against tempdirs.

Re-exports

pub use android::sync as sync_android;

pub use android::AndroidInputs;

pub use compose::EnabledTargets;

pub use compose::Engine;

pub use compose::SubprocessPlugin;

pub use discovery::discover_plugins;

pub use discovery::DiscoveredPlugin;

pub use ios::sync as sync_ios;

pub use ios::IosInputs;

Modules

android

Render the Android host project under gen/android/ from an Config.

compose

In-process plugin engine.

discovery

Plugin discovery — walks a user crate’s cargo dep graph and returns every dependency declaring a Whisker CNG plugin in its Cargo.toml’s [package.metadata.whisker.plugins.<name>] table.

ios

Render the iOS host project under gen/ios/ from an Config.

plugins

Built-in Whisker CNG plugins.

Structs

Config