Last change
on this file since 188ee53 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
798 bytes
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[6a3a178] | 1 | 'use strict'
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| 2 |
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| 3 | module.exports.disposer = disposer
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| 4 |
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| 5 | function disposer (creatorFn, disposerFn, fn) {
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| 6 | const runDisposer = (resource, result, shouldThrow = false) => {
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| 7 | return disposerFn(resource)
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| 8 | .then(
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| 9 | // disposer resolved, do something with original fn's promise
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| 10 | () => {
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| 11 | if (shouldThrow)
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| 12 | throw result
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| 13 |
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| 14 | return result
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| 15 | },
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| 16 | // Disposer fn failed, crash process
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| 17 | (err) => {
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| 18 | throw err
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| 19 | // Or process.exit?
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| 20 | })
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| 21 | }
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| 22 |
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| 23 | return creatorFn
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| 24 | .then((resource) => {
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| 25 | // fn(resource) can throw, so wrap in a promise here
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| 26 | return Promise.resolve().then(() => fn(resource))
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| 27 | .then((result) => runDisposer(resource, result))
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| 28 | .catch((err) => runDisposer(resource, err, true))
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| 29 | })
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| 30 | }
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