75 lines
1.9 KiB
JavaScript
75 lines
1.9 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = asyncEachOfLimit;
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var _breakLoop = require('./breakLoop.js');
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var _breakLoop2 = _interopRequireDefault(_breakLoop);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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// for async generators
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function asyncEachOfLimit(generator, limit, iteratee, callback) {
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let done = false;
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let canceled = false;
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let awaiting = false;
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let running = 0;
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let idx = 0;
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function replenish() {
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//console.log('replenish')
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if (running >= limit || awaiting || done) return;
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//console.log('replenish awaiting')
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awaiting = true;
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generator.next().then(({ value, done: iterDone }) => {
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//console.log('got value', value)
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if (canceled || done) return;
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awaiting = false;
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if (iterDone) {
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done = true;
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if (running <= 0) {
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//console.log('done nextCb')
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callback(null);
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}
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return;
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}
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running++;
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iteratee(value, idx, iterateeCallback);
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idx++;
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replenish();
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}).catch(handleError);
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}
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function iterateeCallback(err, result) {
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//console.log('iterateeCallback')
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running -= 1;
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if (canceled) return;
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if (err) return handleError(err);
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if (err === false) {
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done = true;
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canceled = true;
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return;
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}
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if (result === _breakLoop2.default || done && running <= 0) {
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done = true;
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//console.log('done iterCb')
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return callback(null);
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}
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replenish();
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}
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function handleError(err) {
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if (canceled) return;
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awaiting = false;
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done = true;
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callback(err);
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}
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replenish();
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}
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module.exports = exports['default'];
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