This method is similar to `Array.prototype.every` and calls *fn* on each chunk in the stream to check if all awaited return values are truthy value for *fn*. Once an *fn* call on a chunk `await`ed return value is falsy, the stream is destroyed and the promise is fulfilled with `false`. If all of the *fn* calls on the chunks return a truthy value, the promise is fulfilled with `true`.

Parameters

fn: (

data: any,

options?: Pick<ArrayOptions, "signal">,

) => boolean | Promise<boolean>

a function to call on each chunk of the stream. Async or not.

optional

options: ArrayOptions

Return Type

Promise<boolean>

a promise evaluating to `true` if *fn* returned a truthy value for every one of the chunks.