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