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							36 lines
						
					
					
						
							1.3 KiB
						
					
					
				
			
		
		
	
	
							36 lines
						
					
					
						
							1.3 KiB
						
					
					
				import { traverse, getSectionMetadatas, shiftSection } from "@webassemblyjs/ast"; | 
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import { overrideBytesInBuffer } from "@webassemblyjs/helper-buffer"; | 
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export function removeSections(ast, uint8Buffer, section) { | 
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  var sectionMetadatas = getSectionMetadatas(ast, section); | 
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 | 
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  if (sectionMetadatas.length === 0) { | 
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    throw new Error("Section metadata not found"); | 
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  } | 
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 | 
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  return sectionMetadatas.reverse().reduce(function (uint8Buffer, sectionMetadata) { | 
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    var startsIncludingId = sectionMetadata.startOffset - 1; | 
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    var ends = section === "start" ? sectionMetadata.size.loc.end.column + 1 : sectionMetadata.startOffset + sectionMetadata.size.value + 1; | 
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    var delta = -(ends - startsIncludingId); | 
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    /** | 
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     * update AST | 
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     */ | 
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    // Once we hit our section every that is after needs to be shifted by the delta | 
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 | 
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    var encounteredSection = false; | 
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    traverse(ast, { | 
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      SectionMetadata: function SectionMetadata(path) { | 
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        if (path.node.section === section) { | 
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          encounteredSection = true; | 
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          return path.remove(); | 
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        } | 
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 | 
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        if (encounteredSection === true) { | 
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          shiftSection(ast, path.node, delta); | 
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        } | 
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      } | 
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    }); // replacement is nothing | 
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 | 
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    var replacement = []; | 
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    return overrideBytesInBuffer(uint8Buffer, startsIncludingId, ends, replacement); | 
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  }, uint8Buffer); | 
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} |