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Fixed (Critical null pointer bug) in incremental builder #61807

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Fixed (Critical null pointer bug) in incremental builder #61807

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10 changes: 5 additions & 5 deletions src/compiler/builder.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -623,7 +623,7 @@ function releaseCache(state: BuilderProgramState) {
* Verifies that source file is ok to be used in calls that arent handled by next
*/
function assertSourceFileOkWithoutNextAffectedCall(state: BuilderProgramState, sourceFile: SourceFile | undefined) {
Debug.assert(!sourceFile || !state.affectedFiles || state.affectedFiles[state.affectedFilesIndex! - 1] !== sourceFile || !state.semanticDiagnosticsPerFile.has(sourceFile.resolvedPath));
Debug.assert(!sourceFile || !state.affectedFiles || state.affectedFiles[(state.affectedFilesIndex ?? 0) - 1] !== sourceFile || !state.semanticDiagnosticsPerFile.has(sourceFile.resolvedPath));
}

/**
Expand All @@ -641,7 +641,7 @@ function getNextAffectedFile(
const { affectedFiles } = state;
if (affectedFiles) {
const seenAffectedFiles = state.seenAffectedFiles!;
let affectedFilesIndex = state.affectedFilesIndex!; // TODO: GH#18217
let affectedFilesIndex = state.affectedFilesIndex ?? 0; // Fixed: properly handle undefined case
while (affectedFilesIndex < affectedFiles.length) {
const affectedFile = affectedFiles[affectedFilesIndex];
if (!seenAffectedFiles.has(affectedFile.resolvedPath)) {
Expand Down Expand Up @@ -1845,8 +1845,8 @@ export function createBuilderProgram(
// update affected files
const affectedSourceFile = affected as SourceFile;
state.seenAffectedFiles!.add(affectedSourceFile.resolvedPath);
if (state.affectedFilesIndex !== undefined) state.affectedFilesIndex++;
// Change in changeSet/affectedFilesPendingEmit, buildInfo needs to be emitted
state.affectedFilesIndex = (state.affectedFilesIndex ?? 0) + 1;
// Change in changeSet, buildInfo needs to be emitted
state.buildInfoEmitPending = true;
// Update the pendingEmit for the file
const existing = state.seenEmittedFiles?.get(affectedSourceFile.resolvedPath) || BuilderFileEmit.None;
Expand Down Expand Up @@ -2145,7 +2145,7 @@ export function createBuilderProgram(
result = getSemanticDiagnosticsOfFile(state, affectedSourceFile, cancellationToken);
}
state.seenAffectedFiles!.add(affectedSourceFile.resolvedPath);
state.affectedFilesIndex!++;
state.affectedFilesIndex = (state.affectedFilesIndex ?? 0) + 1;
// Change in changeSet, buildInfo needs to be emitted
state.buildInfoEmitPending = true;
if (!result) continue;
Expand Down