Nicolò Ribaudo fb9a752262 Function sent (#5920)
* Create "babel-helper-wrap-function"

It contains the logic to wrap a function inside a call expression.
It was part of the "babel-helper-remap-async-to-generator" package, but
it is needed to transpile "function.sent"

* Create "babel-transform-function-sent"

It transforms the "function.sent" meta property by replacing it with
"yield" and making the generator ignore the first ".next()" call.

* "function.sent" is the last value passed to .next(), not the first one

* Disable exec tests on old node

* Fix flow error

* Add "transform-function-sent" to "stage-2" preset

* Do every trasformation in one traversal

* Test for "yield function.sent"

* [skip ci]

* Fix some typos [skip ci]
2017-07-25 11:07:01 -04:00

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JavaScript

function _skipFirstGeneratorNext(fn) { return function () { var it = fn.apply(this, arguments); it.next(); return it; }; }
_skipFirstGeneratorNext(function* () {
let _functionSent = yield;
const a = _functionSent;
const b = _functionSent;
_functionSent = yield 4;
const c = _functionSent;
const d = _functionSent = yield;
const e = _functionSent;
return [a, b, c, d, e];
})();