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nest-optional-validation-pipes
Advanced tools
A NestJS addon that provides validation pipes for the simple data types with the option of optionality. E.g. a ParseBoolOptionalPipe that validates & transforms @Query parameters that are then either true, false or undefined/null or throw an error.
This package provides the same validation & transformation pipes as @nestjs/common does, but with optionality.
This means, for example, a ParseBoolOptionalPipe
will validate & transform string parameters of the form "true"
and "false"
into proper booleans true
and false
but return undefined
, if null
or undefined
is passed as input.
This is especially useful in the case of optional @Query
parameters: Let's say you wanted to add some kind of optional filtering for a resource in your api, so you add a flag as a @Query
parameter - using the default ParseBoolPipe
will throw an error if the flag is not provided on every request.
This package addresses this exact shortcoming: using a ParseBoolOptionalPipe
instead of a ParseBoolPipe
will mean the validation will not fail on "no flag provided" - it will return undefined
instead, building a bridge.
Exactly the same way you would use the @nestjs/common Built-in Pipes. See the official nestjs docs for further info.
Approximately 90% of the code is taken directly from @nestjs/common, I only put my own spin on their already awesome built-in pipes.
So go check them out! (If you don't know them, how did you end up here?)
FAQs
A NestJS addon that provides validation pipes for the simple data types with the option of optionality. E.g. a ParseBoolOptionalPipe that validates & transforms @Query parameters that are then either true, false or undefined/null or throw an error.
The npm package nest-optional-validation-pipes receives a total of 27 weekly downloads. As such, nest-optional-validation-pipes popularity was classified as not popular.
We found that nest-optional-validation-pipes 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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