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node_modules
*.log
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# babel-plugin-transform-async-generator-functions
> Turn async generator functions and for-await statements to ES2015 generators
## Example
**In**
```javascript
async function* agf() {
await 1;
yield 2;
}
```
**Out**
```javascript
var _asyncGenerator = ...
let agf = (() => {
var _ref = _asyncGenerator.wrap(function* () {
yield _asyncGenerator.await(1);
yield 2;
});
return function agf() {
return _ref.apply(this, arguments);
};
})();
```
For await example
```js
async function f() {
for await (let x of y) {
g(x);
}
}
```
**Example Usage**
```js
async function* genAnswers() {
var stream = [ Promise.resolve(4), Promise.resolve(9), Promise.resolve(12) ];
var total = 0;
for await (let val of stream) {
total += await val;
yield total;
}
}
function forEach(ai, fn) {
return ai.next().then(function (r) {
if (!r.done) {
fn(r);
return forEach(ai, fn);
}
});
}
var output = 0;
forEach(genAnswers(), function(val) { output += val.value })
.then(function () {
console.log(output); // 42
});
```
[Try it Out in the REPL](https://babeljs.io/repl/#?babili=false&evaluate=true&lineWrap=false&presets=stage-3&code=async%20function*%20genAnswers()%20%7B%0A%20%20var%20stream%20%3D%20%5B%20Promise.resolve(4)%2C%20Promise.resolve(9)%2C%20Promise.resolve(12)%20%5D%3B%0A%20%20var%20total%20%3D%200%3B%0A%20%20for%20await%20(let%20val%20of%20stream)%20%7B%0A%20%20%20%20total%20%2B%3D%20await%20val%3B%0A%20%20%20%20yield%20total%3B%0A%20%20%7D%0A%7D%0A%0Afunction%20forEach(ai%2C%20fn)%20%7B%0A%20%20return%20ai.next().then(function%20(r)%20%7B%0A%20%20%20%20if%20(!r.done)%20%7B%0A%20%20%20%20%20%20fn(r)%3B%0A%20%20%20%20%20%20return%20forEach(ai%2C%20fn)%3B%0A%20%20%20%20%7D%0A%20%20%7D)%3B%0A%7D%0A%0Avar%20output%20%3D%200%3B%0AforEach(genAnswers()%2C%20function(val)%20%7B%20output%20%2B%3D%20val.value%20%7D)%0A.then(function%20()%20%7B%0A%20%20console.log(output)%3B%20%2F%2F%2042%0A%7D)%3B&experimental=true&loose=false&spec=false&playground=true&stage=0)
## Installation
```sh
npm install --save-dev babel-plugin-transform-async-generator-functions
```
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
{
"plugins": ["transform-async-generator-functions"]
}
```
### Via CLI
```sh
babel --plugins transform-async-generator-functions script.js
```
### Via Node API
```javascript
require("babel-core").transform("code", {
plugins: ["transform-async-generator-functions"]
});
```
## References
* [Proposal: Asynchronous iteration for ECMAScript](https://github.com/tc39/proposal-async-iteration)

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"use strict";
exports.__esModule = true;
exports.default = function (_ref) {
var t = _ref.types;
var yieldStarVisitor = {
Function: function Function(path) {
path.skip();
},
YieldExpression: function YieldExpression(_ref2, state) {
var node = _ref2.node;
if (!node.delegate) return;
var callee = state.addHelper("asyncGeneratorDelegate");
node.argument = t.callExpression(callee, [t.callExpression(state.addHelper("asyncIterator"), [node.argument]), t.memberExpression(state.addHelper("asyncGenerator"), t.identifier("await"))]);
}
};
return {
inherits: require("babel-plugin-syntax-async-generators"),
visitor: {
Function: function Function(path, state) {
if (!path.node.async || !path.node.generator) return;
path.traverse(yieldStarVisitor, state);
(0, _babelHelperRemapAsyncToGenerator2.default)(path, state.file, {
wrapAsync: t.memberExpression(state.addHelper("asyncGenerator"), t.identifier("wrap")),
wrapAwait: t.memberExpression(state.addHelper("asyncGenerator"), t.identifier("await"))
});
}
}
};
};
var _babelHelperRemapAsyncToGenerator = require("babel-helper-remap-async-to-generator");
var _babelHelperRemapAsyncToGenerator2 = _interopRequireDefault(_babelHelperRemapAsyncToGenerator);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
module.exports = exports["default"];

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{
"_from": "babel-plugin-transform-async-generator-functions@^6.24.1",
"_id": "babel-plugin-transform-async-generator-functions@6.24.1",
"_inBundle": false,
"_integrity": "sha1-8FiQAUX9PpkHpt3yjaWfIVJYpds=",
"_location": "/babel-plugin-transform-async-generator-functions",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "babel-plugin-transform-async-generator-functions@^6.24.1",
"name": "babel-plugin-transform-async-generator-functions",
"escapedName": "babel-plugin-transform-async-generator-functions",
"rawSpec": "^6.24.1",
"saveSpec": null,
"fetchSpec": "^6.24.1"
},
"_requiredBy": [
"/babel-preset-stage-3"
],
"_resolved": "https://registry.npmjs.org/babel-plugin-transform-async-generator-functions/-/babel-plugin-transform-async-generator-functions-6.24.1.tgz",
"_shasum": "f058900145fd3e9907a6ddf28da59f215258a5db",
"_spec": "babel-plugin-transform-async-generator-functions@^6.24.1",
"_where": "/Applications/XAMPP/xamppfiles/htdocs/wordpress/t-latehome/wp-content/plugins/opal-estate-pro/node_modules/babel-preset-stage-3",
"bundleDependencies": false,
"dependencies": {
"babel-helper-remap-async-to-generator": "^6.24.1",
"babel-plugin-syntax-async-generators": "^6.5.0",
"babel-runtime": "^6.22.0"
},
"deprecated": false,
"description": "Turn async generator functions into ES2015 generators",
"devDependencies": {
"babel-helper-plugin-test-runner": "^6.24.1"
},
"keywords": [
"babel-plugin"
],
"license": "MIT",
"main": "lib/index.js",
"name": "babel-plugin-transform-async-generator-functions",
"repository": {
"type": "git",
"url": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-async-generator-functions"
},
"version": "6.24.1"
}