Function parseChunk

parseChunk(
    ctx: IDecodeContext,
    header: IPngHeaderDetails,
    chunk: IPngChunk,
): IPngMetadataSignificantBits
sBIT Significant bits

Spec: https://www.w3.org/TR/PNG/#11sBIT
Parameters
- ctx: IDecodeContext
- header: IPngHeaderDetails
- chunk: IPngChunk
Returns IPngMetadataSignificantBits
- Defined in src/png-codec/decode/chunks/chunk_sBIT.ts:30