Function makeStringSubtypeArray

Given a list of string literals and/or string subtype arrays, creates a typed, flattened array.

For example:

const x = makeStringSubtypeArray('one', 'two');
type X = typeof x[0];
const y = makeStringSubtypeArray(x, 'three');
type Y = typeof y[0];
Copy

In the above example:

• the type of x is Array<'one' | 'two'>
• the type of y is Array<'one' | 'two' | 'three'>

and so:

• 'X' is 'one' | 'two'
• 'Y' is 'one' | 'two' | 'three'