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gossamer

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Web Platform and ECMAScript API bindings for Gleam's JavaScript target

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gossamer src gossamer transform_stream.gleam
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src/gossamer/transform_stream.gleam 

import gossamer/promise.{type Promise}

import gossamer/readable_stream.{type ReadableStream}

import gossamer/transform_stream/default_controller.{type DefaultController}

import gossamer/transform_stream/transformer.{type Transformer}

import gossamer/writable_stream.{type WritableStream}



@external(javascript, "./transform_stream.type.ts", "TransformStream$")

pub type TransformStream(input, output)



@external(javascript, "./transform_stream.ffi.mjs", "new_")

pub fn new(

  transformer: List(Transformer(input, output)),

) -> TransformStream(input, output)



pub fn from_transform(

  transform: fn(input, DefaultController(output)) -> Promise(Nil),

) -> TransformStream(input, output) {

  new([transformer.Transform(transform)])

}



@external(javascript, "./transform_stream.ffi.mjs", "readable")

pub fn readable(

  stream: TransformStream(input, output),

) -> ReadableStream(output)



@external(javascript, "./transform_stream.ffi.mjs", "writable")

pub fn writable(stream: TransformStream(input, output)) -> WritableStream(input)