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makeerror
Advanced tools
Readme
A library to make errors.
Makes an Error constructor function with the signature below. All arguments are
optional, and if the first argument is not a String
, it will be assumed to be
data
:
function(message, data)
You'll typically do something like:
var makeError = require('makeerror')
var UnknownFileTypeError = makeError(
'UnknownFileTypeError',
'The specified type is not known.'
)
var er = UnknownFileTypeError()
er
will have a prototype chain that ensures:
er instanceof UnknownFileTypeError
er instanceof Error
There is support for simple string substitutions like:
var makeError = require('makeerror')
var UnknownFileTypeError = makeError(
'UnknownFileTypeError',
'The specified type "{type}" is not known.'
)
var er = UnknownFileTypeError({ type: 'bmp' })
Now er.message
or er.toString()
will return 'The specified type "bmp" is not known.'
.
You can create simple hierarchies as well using the prototype
chain:
var makeError = require('makeerror')
var ParentError = makeError('ParentError')
var ChildError = makeError(
'ChildError',
'The child error.',
{ proto: ParentError() }
)
var er = ChildError()
er
will have a prototype chain that ensures:
er instanceof ChildError
er instanceof ParentError
er instanceof Error
FAQs
A library to make errors.
The npm package makeerror receives a total of 16,716,260 weekly downloads. As such, makeerror popularity was classified as popular.
We found that makeerror demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Streamline your login process and enhance security by enabling Single Sign-On (SSO) on the Socket platform, now available for all customers on the Enterprise plan, supporting 20+ identity providers.
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