Vedpiler

built for learning purposes

Vedpiler is a Babel plugin that automatically transforms direct state mutations in Zustand into safe, functional updates that keep your store reactive.

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Why Vedpiler?

Zustand requires all state updates to go through its set method to ensure subscribers are notified. Direct mutations like store.count++ or store.name = "Ved" bypass this and can cause bugs or stale UI.

Vedpiler catches these direct mutations at compile time and rewrites them to safe updates, so your state stays predictable.

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What it does

Transforms:

store.count++;
store.name = "Ved";

Into:

store.set(state => ({
  count: state.count + 1
}));

store.set(state => ({
  name: "Ved"
}));

It supports:

• Increment (++) and decrement (--)
• Direct assignment (=)

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Installation

Install Vedpiler as a dev dependency:

npm install --save-dev vedpiler

or

yarn add -D vedpiler

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Usage

Add Vedpiler to your Babel config.

With .babelrc:

{
  "plugins": ["vedpiler"]
}

Or with Babel CLI:

npx babel src --out-dir lib --plugins vedpiler

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Example

Before:

store.count++;
store.likes--;
store.name = "Ved";
store.age = 21;

After:

store.set(state => ({
  count: state.count + 1
}));

store.set(state => ({
  likes: state.likes - 1
}));

store.set(state => ({
  name: "Ved"
}));

store.set(state => ({
  age: 21
}));

Only mutations on a variable named store are transformed. Other variables are not affected.

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Limitations

• Only works if your store is named store.
• Does not handle variable aliases yet (like const myStore = store).
• Does not handle nested mutations (like store.profile.name = "Ved").

Future versions may add scope resolution and nested property support.

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When to use

Use Vedpiler if:

• You want to enforce safe Zustand usage across a team.
• You want compile-time safety against direct mutations.
• You prefer no runtime overhead — the transform happens before your code runs.

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License

MIT

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Author

Built and maintained by Ved Pawar.

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If you find bugs or want to contribute improvements (like scope resolution or nested property support), open an issue or PR on GitHub.

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