hexo/node_modules/async/internal/eachOfLimit.js

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2023-10-03 11:14:36 +08:00
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _once = require('./once.js');
var _once2 = _interopRequireDefault(_once);
var _iterator = require('./iterator.js');
var _iterator2 = _interopRequireDefault(_iterator);
var _onlyOnce = require('./onlyOnce.js');
var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
var _wrapAsync = require('./wrapAsync.js');
var _asyncEachOfLimit = require('./asyncEachOfLimit.js');
var _asyncEachOfLimit2 = _interopRequireDefault(_asyncEachOfLimit);
var _breakLoop = require('./breakLoop.js');
var _breakLoop2 = _interopRequireDefault(_breakLoop);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
exports.default = limit => {
return (obj, iteratee, callback) => {
callback = (0, _once2.default)(callback);
if (limit <= 0) {
throw new RangeError('concurrency limit cannot be less than 1');
}
if (!obj) {
return callback(null);
}
if ((0, _wrapAsync.isAsyncGenerator)(obj)) {
return (0, _asyncEachOfLimit2.default)(obj, limit, iteratee, callback);
}
if ((0, _wrapAsync.isAsyncIterable)(obj)) {
return (0, _asyncEachOfLimit2.default)(obj[Symbol.asyncIterator](), limit, iteratee, callback);
}
var nextElem = (0, _iterator2.default)(obj);
var done = false;
var canceled = false;
var running = 0;
var looping = false;
function iterateeCallback(err, value) {
if (canceled) return;
running -= 1;
if (err) {
done = true;
callback(err);
} else if (err === false) {
done = true;
canceled = true;
} else if (value === _breakLoop2.default || done && running <= 0) {
done = true;
return callback(null);
} else if (!looping) {
replenish();
}
}
function replenish() {
looping = true;
while (running < limit && !done) {
var elem = nextElem();
if (elem === null) {
done = true;
if (running <= 0) {
callback(null);
}
return;
}
running += 1;
iteratee(elem.value, elem.key, (0, _onlyOnce2.default)(iterateeCallback));
}
looping = false;
}
replenish();
};
};
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module.exports = exports['default'];