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@pheasantplucker/failables-node6
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Failables are a clean, consistent, async-friendly, network-friendly result type.
Successful results are represented as failables of type SUCCESS
, with the result stored in the payload.
Empty results are neither success nor failure; they are represented as failables of type EMPTY
, and of course have no payload. Calling success without a payload will result in an empty failable (not a success).
Instead of representing errors sometimes by a result code, sometimes by a magic number, and sometimes by throwing an exception, consistently represent errors as failables of type FAILURE
, with the error message stored in the payload.
That's all there is to it.
const result1 = success('foo') // first parameter is payload
const result2 = success('foo', { timesCalled: 7 }) // second (optional) parameter is metadata
const result3 = failure('trouble!') // payload is error message
const result4 = failure('trouble!', { userId: 'fred' }) // all failables can include metadata
const result5 = empty() // empty failables have no payload
const result6 = empty({ userId: 'fred' }) // for empty, the first (optional) parameter is metadata
const answer = payload(result1) // extract the payload
const metadata = meta(result2) // extract the metadata
if (isFailure(result4)) return result4 // a common pattern: if a failure is encountered in a
// failable-returning function, just return the failure directly
success(payload, meta) // returns a success failable
failure(payload, meta) // returns a failure failable
empty(meta) // returns an empty failable
isFailable(object) // whether the object represents a failable
isSuccess(failable) // whether the failable is success
isFailure(failable) // whether the failable is failure
isEmpty(failable) // whether the failable is empty
payload(failable) // extracts the failable's payload
meta(failable) // extracts the failable's metadata
anyFailed(list) // whether any in the list failed
firstFailure(list) // the first failure in the list
assertSuccess(failable, payload) // assert that the failable is success
assertFailure(failable, payload) // assert that the failable is failure
assertEmpty(failable) // assert that the failable is empty
hydrate(failable) // returns an object with kind, payload, and meta fields
FAQs
to protect against null and throwing errors
The npm package @pheasantplucker/failables-node6 receives a total of 3 weekly downloads. As such, @pheasantplucker/failables-node6 popularity was classified as not popular.
We found that @pheasantplucker/failables-node6 demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 6 open source maintainers collaborating on the project.
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