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.\"
.IX Title "GraphQL::MaybeTypeCheck 3pm"
.TH GraphQL::MaybeTypeCheck 3pm "2022-03-27" "perl v5.34.0" "User Contributed Perl Documentation"
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.SH "NAME"
GraphQL::MaybeTypeCheck \- Conditional type\-checking at runtime
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use GraphQL::MaybeTypeCheck;
\&
\&  method foo(
\&    $arg1 Str,
\&    $arg2 Int
\&  ) :ReturnType(Map[Str, Int]) {
\&    # ...
\&  }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module \fBoptionally\fR enables type-checking in the caller as implemented by
Function::Parameters and Return::Type depending on whether Devel::StrictMode
is activated.
.PP
\fI\f(CI\*(C`Devel::StrictMode\*(C'\fI \s-1ON\s0\fR
.IX Subsection "Devel::StrictMode ON"
.PP
When Devel::StrictMode is active, this module will import Function::Parameters
into the caller with its default configuration. As of writing, this includes
checking both argument count and type.
.PP
When in strict mode this also \f(CW\*(C`require\*(C'\fRs Return::Type which registers the
\&\f(CW\*(C`ReturnType\*(C'\fR attribute.
.PP
\fI\f(CI\*(C`Devel::StrictMode\*(C'\fI \s-1OFF\s0\fR
.IX Subsection "Devel::StrictMode OFF"
.PP
When strict mode is inactive this module still imports \f(CW\*(C`Function::Parameters\*(C'\fR
into the caller however it sets \f(CW\*(C`fun\*(C'\fR and \f(CW\*(C`method\*(C'\fR to lax mode and disables
argument type checking.
.PP
This also installs a no-op \f(CW\*(C`ReturnType\*(C'\fR attribute so the existing syntax isn't
broken.