12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849
export const deno_x_brotli = 'https://deno.land/x/brotli@v0.1.4/mod.ts'export const deno_x_flate = 'https://deno.land/x/denoflate@1.2.1/mod.ts'
class Compression {  #brotli: ((data: Uint8Array) => Uint8Array) | null = null  #gzip: ((data: Uint8Array) => Uint8Array) | null = null
  enable: boolean = false
  accept(acceptEncoding: string, contentType: string, contentLength: number): 'br' | 'gzip' | null {    const shouldCompress = this.enable && (      contentType.startsWith('text/') ||      contentType.startsWith('image/svg+xml') ||      /^application\/(javascript|json|xml|wasm)/i.test(contentType)    )    if (shouldCompress && contentLength > 1024) {      if (acceptEncoding.includes('br')) {        return 'br'      } else if (acceptEncoding.includes('gzip')) {        return 'gzip'      }    }    return null  }
  async compress(    data: Uint8Array,    encoding: 'br' | 'gzip'  ): Promise<Uint8Array> {    if (encoding === 'br') {      if (this.#brotli === null) {        const { compress } = await import(deno_x_brotli)        this.#brotli = compress      }      return this.#brotli!(data)    } else if (encoding === 'gzip') {      if (this.#gzip === null) {        const denoflate = await import(deno_x_flate)        this.#gzip = (data: Uint8Array) => denoflate.gzip(data, undefined)      }      return this.#gzip!(data)    }
    return data  }}
export default new Compression()