Add schema for parsing arrays from delimited strings

[Attila Večerek]

🚀 Feature request

A function that returns a schema that can parse delimited strings into arrays of strings.

Current Behavior

Missing

Desired Behavior

const commaSeparatedList = S.arrayFromDelimitedString(",")
const parse = S.parseSync(commaSeparatedList)

const a: readonly string[] = parse("1,2,3")
// ["1", "2", "3"]

Suggested Solution

Who does this impact? Who is this for?

This can be helpful to both HTTP clients and servers that have a need to parse query params representing a list of ids or other values, e.g.:

GET /api/users/show_many?ids=123,456,789

Describe alternatives you've considered

Additional context

Your environment

Software	Version(s)
@effect/schema
TypeScript

[Attila Večerek]

Now available since https://github.com/Effect-TS/schema/releases/tag/v0.30.4.

The way to achieve this is different from the proposal, though:

//$ExpectType Schema<string, ReadonlyArray<string>>
S.string.pipe(S.split(","))

//$ExpectType Schema<string, ReadonlyArray<number>>
S.string.pipe(S.split(","), S.compose(S.array(S.NumberFromString)))