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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.forwardAsync = forwardAsync;
exports.isAsync = void 0;
exports.isThenable = isThenable;
exports.maybeAsync = maybeAsync;
exports.waitFor = exports.onFirstPause = void 0;
function _gensync() {
const data = require("gensync");
_gensync = function () {
return data;
};
return data;
}
const id = x => x;
const runGenerator = _gensync()(function* (item) {
return yield* item;
});
const isAsync = _gensync()({
sync: () => false,
errback: cb => cb(null, true)
});
exports.isAsync = isAsync;
function maybeAsync(fn, message) {
return _gensync()({
sync(...args) {
const result = fn.apply(this, args);
if (isThenable(result)) throw new Error(message);
return result;
},
async(...args) {
return Promise.resolve(fn.apply(this, args));
}
});
}
const withKind = _gensync()({
sync: cb => cb("sync"),
async: cb => cb("async")
});
function forwardAsync(action, cb) {
const g = _gensync()(action);
return withKind(kind => {
const adapted = g[kind];
return cb(adapted);
});
}
const onFirstPause = _gensync()({
name: "onFirstPause",
arity: 2,
sync: function (item) {
return runGenerator.sync(item);
},
errback: function (item, firstPause, cb) {
let completed = false;
runGenerator.errback(item, (err, value) => {
completed = true;
cb(err, value);
});
if (!completed) {
firstPause();
}
}
});
exports.onFirstPause = onFirstPause;
const waitFor = _gensync()({
sync: id,
async: id
});
exports.waitFor = waitFor;
function isThenable(val) {
return !!val && (typeof val === "object" || typeof val === "function") && !!val.then && typeof val.then === "function";
}
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