Use array helpers instead of 'reduce' (#17172)
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2 changed files with 17 additions and 26 deletions
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@ -201,7 +201,7 @@ namespace ts.server {
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* This helper function processes a list of projects and return the concatenated, sortd and deduplicated output of processing each project.
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*/
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export function combineProjectOutput<T>(projects: Project[], action: (project: Project) => T[], comparer?: (a: T, b: T) => number, areEqual?: (a: T, b: T) => boolean) {
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const result = projects.reduce<T[]>((previous, current) => concatenate(previous, action(current)), []).sort(comparer);
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const result = ts.flatMap(projects, action).sort(comparer);
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return projects.length > 1 ? deduplicate(result, areEqual) : result;
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}
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@ -846,21 +846,22 @@ namespace ts.server {
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compareRenameLocation,
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(a, b) => a.file === b.file && a.start.line === b.start.line && a.start.offset === b.start.offset
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);
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const locs = fileSpans.reduce<protocol.SpanGroup[]>((accum, cur) => {
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const locs: protocol.SpanGroup[] = [];
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for (const cur of fileSpans) {
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let curFileAccum: protocol.SpanGroup;
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if (accum.length > 0) {
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curFileAccum = accum[accum.length - 1];
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if (locs.length > 0) {
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curFileAccum = locs[locs.length - 1];
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if (curFileAccum.file !== cur.file) {
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curFileAccum = undefined;
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}
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}
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if (!curFileAccum) {
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curFileAccum = { file: cur.file, locs: [] };
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accum.push(curFileAccum);
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locs.push(curFileAccum);
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}
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curFileAccum.locs.push({ start: cur.start, end: cur.end });
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return accum;
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}, []);
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}
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return { info: renameInfo, locs };
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}
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@ -1183,15 +1184,13 @@ namespace ts.server {
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return undefined;
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}
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if (simplifiedResult) {
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return completions.entries.reduce((result: protocol.CompletionEntry[], entry: ts.CompletionEntry) => {
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return mapDefined(completions.entries, entry => {
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if (completions.isMemberCompletion || (entry.name.toLowerCase().indexOf(prefix.toLowerCase()) === 0)) {
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const { name, kind, kindModifiers, sortText, replacementSpan } = entry;
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const convertedSpan: protocol.TextSpan =
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replacementSpan ? this.decorateSpan(replacementSpan, scriptInfo) : undefined;
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result.push({ name, kind, kindModifiers, sortText, replacementSpan: convertedSpan });
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const convertedSpan = replacementSpan ? this.decorateSpan(replacementSpan, scriptInfo) : undefined;
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return { name, kind, kindModifiers, sortText, replacementSpan: convertedSpan };
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}
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return result;
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}, []).sort((a, b) => ts.compareStrings(a.name, b.name));
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}).sort((a, b) => ts.compareStrings(a.name, b.name));
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}
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else {
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return completions;
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@ -1203,13 +1202,8 @@ namespace ts.server {
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const scriptInfo = project.getScriptInfoForNormalizedPath(file);
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const position = this.getPosition(args, scriptInfo);
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return args.entryNames.reduce((accum: protocol.CompletionEntryDetails[], entryName: string) => {
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const details = project.getLanguageService().getCompletionEntryDetails(file, position, entryName);
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if (details) {
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accum.push(details);
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}
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return accum;
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}, []);
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return mapDefined(args.entryNames, entryName =>
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project.getLanguageService().getCompletionEntryDetails(file, position, entryName));
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}
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private getCompileOnSaveAffectedFileList(args: protocol.FileRequestArgs): protocol.CompileOnSaveAffectedFileListSingleProject[] {
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@ -1274,14 +1268,11 @@ namespace ts.server {
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}
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private getDiagnostics(next: NextStep, delay: number, fileNames: string[]): void {
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const checkList = fileNames.reduce((accum: PendingErrorCheck[], uncheckedFileName: string) => {
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const checkList = mapDefined(fileNames, uncheckedFileName => {
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const fileName = toNormalizedPath(uncheckedFileName);
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const project = this.projectService.getDefaultProjectForFile(fileName, /*refreshInferredProjects*/ true);
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if (project) {
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accum.push({ fileName, project });
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}
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return accum;
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}, []);
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return project && { fileName, project };
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});
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if (checkList.length > 0) {
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this.updateErrorCheck(next, checkList, this.changeSeq, (n) => n === this.changeSeq, delay);
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