Question 1

How does regenerator compare to Babel for handling generators?

Accepted Answer

Regenerator is a specialized tool focused only on generator and async iteration transformation, often used as a plugin within Babel. Babel handles a wider range of ES6+ features, but regenerator is more efficient and battle-tested for its specific niche.

Question 2

How to use regenerator in a Node.js project?

Accepted Answer

Install it via npm and use it programmatically with require('regenerator').compile(source).code, or run the CLI command 'regenerator input.js > output.js' to transform files directly in your build process.

Question 3

Can regenerator handle async/await syntax?

Accepted Answer

No, regenerator is designed for generator functions and async iteration, not async/await. For async/await, you need other transpilers like Babel with appropriate plugins, as async/await relies on promises rather than generators.

Question 4

What's the performance impact of using regenerator?

Accepted Answer

The transformation adds minimal overhead with a runtime under 1KB, but the generated ES5 code may be less efficient than native ES6 generators in modern environments, so it's best for compatibility rather than performance.

Question 5

How do I report bugs in regenerator?

Accepted Answer

Use the online sandbox to test problematic code and click 'report a bug' to auto-fill an issue, or fork the repository and add failing tests to the test suite for pull requests.

Question 6

Is regenerator still necessary with modern browsers?

Accepted Answer

For projects supporting legacy browsers like IE11, yes; but if you're targeting only modern environments with native generator support, regenerator is unnecessary and adds unnecessary complexity.

Question 7

How to integrate regenerator into a Webpack or Gulp build?

Accepted Answer

Use it as a plugin or transformer in your build tool; for example, in Webpack, configure it with babel-loader and include regenerator as a preset, or in Gulp, pipe files through the regenerator CLI or API.

regenerator

What is regenerator?

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Pros & Cons

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Frequently Asked Questions