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30 lines
798 B
30 lines
798 B
'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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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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