$ cnpm install fault
Functional errors with formatted output.
This package is ESM only: Node 12+ is needed to use it and it must be import
ed
instead of require
d.
npm:
npm install fault
import fault from 'fault'
throw fault('Hello %s!', 'Eric')
Yields:
Error: Hello Eric!
at FormattedError (~/node_modules/fault/index.js:30:12)
at Object.<anonymous> (~/example.js:3:7)
…
Or, format a float in a type error:
import fault from 'fault'
throw fault.type('Who doesn’t like %f? \uD83C\uDF70', Math.PI)
Yields:
TypeError: Who doesn’t like 3.141593? ????
at Function.FormattedError [as type] (~/node_modules/fault/index.js:30:12)
at Object.<anonymous> (~/example.js:3:7)
This package exports the following identifiers: fault
, create
.
There is no default export.
fault(format?[, values…])
Create an error with a printf-like formatted message.
format
(string
, optional)values
(*
, optional)%s
— String%b
— Binary%c
— Character%d
— Decimal%f
— Floating point%o
— Octal%x
— Lowercase hexadecimal%X
— Uppercase hexadecimal%
followed by any other character, prints that characterSee samsonjs/format
for argument parsing.
An instance of Error
.
fault.eval(format?[, values…])
— EvalErrorfault.range(format?[, values…])
— RangeErrorfault.reference(format?[, values…])
— ReferenceErrorfault.syntax(format?[, values…])
— SyntaxErrorfault.type(format?[, values…])
— TypeErrorfault.uri(format?[, values…])
— URIErrorcreate(Constructor)
Factory to create instances of ErrorConstructor
with support for formatting.
Used internally to wrap the global error constructors, exposed for custom
errors.
Returns a function just like fault
.
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