I am a super newbie to Typescript so sorry for a dumb question...
I want to write a function that takes arguments like below
export const AutoComplete = async (
str: string,
functionList?: GetAllFunctions()
) => {
}
GetAllFunctions() is something that returns an array and need to be the default for functionList but I could also do something like
AutoComplete ('foo', ['foo', 'bar'...])
What would be the correct way to do that
You placed the default value expression where the type annotation for functionList should be:
export const AutoComplete = async (str: string, functionList: string[] = GetAllFunctions()) => {
// ^^^^^^^^^^^^ ^^^^^^^^ ^^^^^^^^^^^^^^^^^
// arg name type default value
};
The : says "Here's the type for functionList". The = says "this is the default value for functionList".
You can also have only a default value (no type annotation), like this
export const AutoComplete = async (str: string, functionList = GetAllFunctions()) => {
// ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^
// arg name default value
};
... or only a type annotation (no default value), like this:
export const AutoComplete = async (str: string, functionList: string[]) => {
// ^^^^^^^^^^^^ ^^^^^^^^
// arg name type
};
In any case, the meaning of : vs. = in the function signature remains the same.
object[] for any object. Alternatively you can use a literal type, e.g. { key: string }[], or reference an existing named type / interface: MyTypeOrInterface[].export const AutoComplete = async (
str: string,
functionList = GetAllFunctions()
) => {
}
I believe this is the function signature you are looking for:
export const AutoComplete = async (str: string, functionList: string[] = GetAllFunctions()) => {};
