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extern crate alloc;
use alloc::vec::Vec;
use wasm_bindgen::prelude::*;
#[wasm_bindgen]pub fn gzip(input: &[u8], compression: Option<u32>) -> Result<Vec<u8>, JsError> {    use std::io::Write;
    let _compression = compression        .map(|x| flate2::Compression::new(x))        .unwrap_or(flate2::Compression::default());
    let mut encoder = flate2::write::GzEncoder::new(Vec::new(), _compression);
    encoder.write_all(input).map_err(JsError::from)?;    encoder.finish().map_err(JsError::from)}
#[wasm_bindgen]pub struct GzEncoder {    pub(crate) inner: Box<flate2::write::GzEncoder<Vec<u8>>>,}
#[wasm_bindgen]impl GzEncoder {    #[wasm_bindgen(constructor)]    pub fn new(compression: Option<u32>) -> Self {        let _compression = compression            .map(|x| flate2::Compression::new(x))            .unwrap_or(flate2::Compression::default());
        let decoder = flate2::write::GzEncoder::new(Vec::new(), _compression);        let inner = Box::new(decoder);
        Self { inner }    }
    #[wasm_bindgen]    pub fn write(&mut self, input: &[u8]) -> Result<(), JsError> {        use std::io::Write;
        self.inner.write_all(input).map_err(JsError::from)    }
    #[wasm_bindgen]    pub fn flush(&mut self) -> Result<(), JsError> {        use std::io::Write;
        self.inner.flush().map_err(JsError::from)    }
    #[wasm_bindgen]    pub fn read(&mut self) -> Vec<u8> {        let output = self.inner.get_ref().to_vec();
        self.inner.get_mut().clear();
        output    }
    #[wasm_bindgen]    pub fn finish(self) -> Result<Vec<u8>, JsError> {        self.inner.finish().map_err(JsError::from)    }}