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31 lines
811 B
31 lines
811 B
4 years ago
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'use strict'
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module.exports.disposer = disposer
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function disposer (creatorFn, disposerFn, fn) {
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const runDisposer = (resource, result, shouldThrow = false) => {
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return disposerFn(resource)
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.then(
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// disposer resolved, do something with original fn's promise
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() => {
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if (shouldThrow) {
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throw result
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}
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return result
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},
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// Disposer fn failed, crash process
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(err) => {
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throw err
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// Or process.exit?
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})
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}
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return creatorFn
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.then((resource) => {
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// fn(resource) can throw, so wrap in a promise here
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return Promise.resolve().then(() => fn(resource))
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.then((result) => runDisposer(resource, result))
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.catch((err) => runDisposer(resource, err, true))
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})
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}
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