Generic type variables
Wrapper<
Opening
,Text,Closing>
Wrapper<
Opening
,Text,Closing>
Opening
extends
string
=
string
Opening
extends
string
=
string
A generic type variable constrained by the string
, by default of the value captured from the provided opening
indicates the opening type of a new Wrapper
instance.
class Wrapper<
Opening extends string = string, // <--- Declare generic type variable Opening.
Text extends string = '',
Closing extends string = string
> extends Wrap<Opening, Text, Closing> {
...
constructor(
opening: Opening, // <--- Capture generic type variable Opening.
closing: Closing,
text: Text = '' as Text
) {
super(opening, closing, text);
}
...
}
Wrapper<Opening,
Text
,Closing>
Wrapper<Opening,
Text
,Closing>
Text
extends
string
=
''
Text
extends
string
=
''
A generic type variable constrained by the string
, by default of the value captured from the provided text
indicates the text type of a new Wrapper
instance.
class Wrapper<
Opening extends string = string,
Text extends string = '', // <--- Declare generic type variable Text.
Closing extends string = string
> extends Wrap<Opening, Text, Closing> {
...
constructor(
opening: Opening,
closing: Closing,
text: Text = '' as Text // <--- Capture generic type variable Text.
) {
super(opening, closing, text);
}
...
}
Wrapper<Opening,Text,
Closing
>
Wrapper<Opening,Text,
Closing
>
Closing
extends
string
=
string
Closing
extends
string
=
string
A generic type variable constrained by the string
, by default of the value captured from the provided closing
indicates the closing type of a new Wrapper
instance.
class Wrapper<
Opening extends string = string,
Text extends string = '',
Closing extends string = string // <--- Declare generic type variable Closing.
> extends Wrap<Opening, Text, Closing> {
...
constructor(
opening: Opening,
closing: Closing, // <--- Capture generic type variable Closing.
text: Text = '' as Text
) {
super(opening, closing, text);
}
...
}
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