head

head<S, A>(self): transform<S, OptionFromSelf<SchemaClass<A[number], A[number], never>>>

Defined in: node_modules/.pnpm/effect@3.14.8/node_modules/effect/dist/dts/Schema.d.ts:3429

Get the first element of a ReadonlyArray, or None if the array is empty.

Type Parameters

• S extends Any

• A extends readonly unknown[]

Parameters

self

S & Schema<A, Encoded<S>, Context<S>>

Returns

transform<S, OptionFromSelf<SchemaClass<A[number], A[number], never>>>

Since

3.10.0