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21 lines
627 B
21 lines
627 B
module.exports = function race (p, min, max) {
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min = typeof min === 'number' ? min : 1
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max = typeof max === 'number' ? max : p.length
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let errors = 0
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const results = []
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return new Promise((resolve, reject) => {
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for (let i = 0; i < p.length; i++) p[i].then(ondone, onerror)
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function ondone (res) {
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if (results.length < max) results.push(res)
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if (results.length >= max) return resolve(results)
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if (results.length + errors === p.length) return resolve(results)
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}
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function onerror () {
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if ((p.length - ++errors) < min) reject(new Error('Too many requests failed'))
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}
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})
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}
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