123456789101112131415161718192021222324252627282930313233343536
export default class GZheader {  /* true if compressed data believed to be text */  text: number = 0;  /* modification time */  time: number = 0;  /* extra flags (not used when writing a gzip file) */  xflags: number = 0;  /* operating system */  os: number = 0;  /* pointer to extra field or Z_NULL if none */  extra: any = null;  /* extra field length (valid if extra != Z_NULL) */  extra_len: number = 0; // Actually, we don't need it in JS,  // but leave for few code modifications
  //  // Setup limits is not necessary because in js we should not preallocate memory  // for inflate use constant limit in 65536 bytes  //
  /* space at extra (only when reading header) */  // extra_max  = 0;  /* pointer to zero-terminated file name or Z_NULL */  name: string = "";  /* space at name (only when reading header) */  // name_max   = 0;  /* pointer to zero-terminated comment or Z_NULL */  comment: string = "";  /* space at comment (only when reading header) */  // comm_max   = 0;  /* true if there was or will be a header crc */  hcrc: number = 0;  /* true when done reading gzip header (not used when writing a gzip file) */  done: boolean = false;}