export declare const enum PngChunkType { IHDR = "IHDR", cHRM = "cHRM", gAMA = "gAMA", sBIT = "sBIT", PLTE = "PLTE", bKGD = "bKGD", hIST = "hIST", tRNS = "tRNS", oFFs = "oFFs", pHYs = "pHYs", sCAL = "sCAL", IDAT = "IDAT", tIME = "tIME", tEXt = "tEXt", zTXt = "zTXt", fRAc = "fRAc", gIFg = "gIFg", gIFt = "gIFt", gIFx = "gIFx", IEND = "IEND" }