redirectsTarget is keyed with Path (#44278)

* redirectsTarget is keyed with Path * sourceFileToPackageName to keyed with Path * feedback

Author: sheetalkamat

src/compiler/program.ts

@@ -883,9 +883,9 @@ namespace ts {
  // `packageIdToSourceFile` is only used while building the program, while `sourceFileToPackageName` and `isSourceFileTargetOfRedirect` are kept around.
  const packageIdToSourceFile = new Map<string, SourceFile>();
  // Maps from a SourceFile's `.path` to the name of the package it was imported with.
- let sourceFileToPackageName = new Map<string, string>();
+ let sourceFileToPackageName = new Map<Path, string>();
  // Key is a file name. Value is the (non-empty, or undefined) list of files that redirect to it.
- let redirectTargetsMap = createMultiMap<string>();
+ let redirectTargetsMap = createMultiMap<Path, string>();
 
  /**
  * map with

src/compiler/types.ts

@@ -3944,9 +3944,9 @@ namespace ts {
  /* @internal */ getLibFileFromReference(ref: FileReference): SourceFile | undefined;
 
  /** Given a source file, get the name of the package it was imported from. */
- /* @internal */ sourceFileToPackageName: ESMap<string, string>;
+ /* @internal */ sourceFileToPackageName: ESMap<Path, string>;
  /** Set of all source files that some other source file redirects to. */
- /* @internal */ redirectTargetsMap: MultiMap<string, string>;
+ /* @internal */ redirectTargetsMap: MultiMap<Path, string>;
  /** Is the file emitted file */
  /* @internal */ isEmittedFile(file: string): boolean;
  /* @internal */ getFileIncludeReasons(): MultiMap<Path, FileIncludeReason>;
@@ -3974,7 +3974,7 @@ namespace ts {
  }
 
  /* @internal */
- export type RedirectTargetsMap = ReadonlyESMap<string, readonly string[]>;
+ export type RedirectTargetsMap = ReadonlyESMap<Path, readonly string[]>;
 
  export interface ResolvedProjectReference {
  commandLine: ParsedCommandLine;

src/services/documentHighlights.ts

@@ -32,9 +32,10 @@ namespace ts {
  const referenceEntries = FindAllReferences.getReferenceEntriesForNode(position, node, program, sourceFilesToSearch, cancellationToken, /*options*/ undefined, sourceFilesSet);
  if (!referenceEntries) return undefined;
  const map = arrayToMultiMap(referenceEntries.map(FindAllReferences.toHighlightSpan), e => e.fileName, e => e.span);
+ const getCanonicalFileName = createGetCanonicalFileName(program.useCaseSensitiveFileNames());
  return mapDefined(arrayFrom(map.entries()), ([fileName, highlightSpans]) => {
  if (!sourceFilesSet.has(fileName)) {
- if (!program.redirectTargetsMap.has(fileName)) {
+ if (!program.redirectTargetsMap.has(toPath(fileName, program.getCurrentDirectory(), getCanonicalFileName))) {
  return undefined;
  }
  const redirectTarget = program.getSourceFile(fileName);