@babel/plugin-transform-async-to-generator
Advanced tools
Turn async functions into ES2015 generators
The @babel/plugin-transform-async-to-generator package is a Babel plugin that transforms async functions into generator functions using the regenerator runtime, which is a part of the Facebook Regenerator project. This transformation allows async functions to be used in environments that do not natively support async/await syntax by converting them into ES2015/ES6 compatible code.
Transform async functions to generators
This feature allows developers to write asynchronous code using the modern async/await syntax and have it transformed into generator functions that are compatible with older JavaScript engines.
async function foo() {
await bar();
}
// Transforms to:
function foo() {
return regeneratorRuntime.async(function foo$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return regeneratorRuntime.awrap(bar());
case 2:
case "end":
return _context.stop();
}
}
}, null, this);
}This package is similar to @babel/plugin-transform-async-to-generator in that it transforms async functions, but it does so by delegating to a specified module method, allowing for custom handling of async functions.
Fast-async is a Babel plugin that uses nodent to transform async/await functions. It is designed to be faster than the regenerator-based approach used by @babel/plugin-transform-async-to-generator and does not require a runtime.
While not a direct alternative, babel-preset-env includes the capability to transform async functions when the target environments specified do not support them natively. It uses @babel/plugin-transform-async-to-generator as part of its transformation suite when necessary.
Turn async functions into ES2015 generators
See our website @babel/plugin-transform-async-to-generator for more information.
Using npm:
npm install --save-dev @babel/plugin-transform-async-to-generator
or using yarn:
yarn add @babel/plugin-transform-async-to-generator --dev
v7.25.9 (2024-10-22)
babel-parser, babel-template, babel-types
syntacticPlaceholders mode (@liuxingbaoyu)babel-helper-compilation-targets, babel-preset-env
ClassAccessorProperty to prevent the no-undef rule (@victorenator)babel-parser, babel-types
VISITOR_KEYS etc. faster to access (@liuxingbaoyu)FAQs
Turn async functions into ES2015 generators
The npm package @babel/plugin-transform-async-to-generator receives a total of 20,647,980 weekly downloads. As such, @babel/plugin-transform-async-to-generator popularity was classified as popular.
We found that @babel/plugin-transform-async-to-generator demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
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