53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
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'use strict';
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var errcode = require('err-code');
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var retry = require('retry');
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var hasOwn = Object.prototype.hasOwnProperty;
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function isRetryError(err) {
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return err && err.code === 'EPROMISERETRY' && hasOwn.call(err, 'retried');
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}
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function promiseRetry(fn, options) {
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var temp;
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var operation;
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if (typeof fn === 'object' && typeof options === 'function') {
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// Swap options and fn when using alternate signature (options, fn)
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temp = options;
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options = fn;
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fn = temp;
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}
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operation = retry.operation(options);
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return new Promise(function (resolve, reject) {
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operation.attempt(function (number) {
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Promise.resolve()
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.then(function () {
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return fn(function (err) {
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if (isRetryError(err)) {
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err = err.retried;
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}
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throw errcode(new Error('Retrying'), 'EPROMISERETRY', { retried: err });
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}, number);
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})
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.then(resolve, function (err) {
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if (isRetryError(err)) {
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err = err.retried;
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if (operation.retry(err || new Error())) {
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return;
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}
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}
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reject(err);
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});
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});
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});
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}
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module.exports = promiseRetry;
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