getEditsForFileRename: Update tsconfig "files" (#23625)

src/harness/fourslash.ts

@@ -276,14 +276,10 @@ namespace FourSlash {
             if (configFileName) {
                 const baseDir = ts.normalizePath(ts.getDirectoryPath(configFileName));
                 const host = new Utils.MockParseConfigHost(baseDir, /*ignoreCase*/ false, this.inputFiles);
-
-                const configJsonObj = ts.parseConfigFileTextToJson(configFileName, this.inputFiles.get(configFileName));
-                assert.isTrue(configJsonObj.config !== undefined);
-
-                compilationOptions = ts.parseJsonConfigFileContent(configJsonObj.config, host, baseDir, compilationOptions, configFileName).options;
+                const jsonSourceFile = ts.parseJsonText(configFileName, this.inputFiles.get(configFileName));
+                compilationOptions = ts.parseJsonSourceFileConfigFileContent(jsonSourceFile, host, baseDir, compilationOptions, configFileName).options;
             }
 
-
             if (compilationOptions.typeRoots) {
                 compilationOptions.typeRoots = compilationOptions.typeRoots.map(p => ts.getNormalizedAbsolutePath(p, this.basePath));
             }

src/services/getEditsForFileRename.ts

@@ -3,16 +3,33 @@ namespace ts {
     export function getEditsForFileRename(program: Program, oldFilePath: string, newFilePath: string, host: LanguageServiceHost, formatContext: formatting.FormatContext): ReadonlyArray<FileTextChanges> {
         const pathUpdater = getPathUpdater(oldFilePath, newFilePath, host);
         return textChanges.ChangeTracker.with({ host, formatContext }, changeTracker => {
+            updateTsconfigFiles(program, changeTracker, oldFilePath, newFilePath);
             for (const { sourceFile, toUpdate } of getImportsToUpdate(program, oldFilePath)) {
                 const newPath = pathUpdater(isRef(toUpdate) ? toUpdate.fileName : toUpdate.text);
                 if (newPath !== undefined) {
-                    const range = isRef(toUpdate) ? toUpdate : createTextRange(toUpdate.getStart(sourceFile) + 1, toUpdate.end - 1);
+                    const range = isRef(toUpdate) ? toUpdate : createStringRange(toUpdate, sourceFile);
                     changeTracker.replaceRangeWithText(sourceFile, range, isRef(toUpdate) ? newPath : removeFileExtension(newPath));
                 }
             }
         });
     }
 
+    function updateTsconfigFiles(program: Program, changeTracker: textChanges.ChangeTracker, oldFilePath: string, newFilePath: string): void {
+        const cfg = program.getCompilerOptions().configFile;
+        if (!cfg) return;
+        const oldFile = cfg.jsonObject && getFilesEntry(cfg.jsonObject, oldFilePath);
+        if (oldFile) {
+            changeTracker.replaceRangeWithText(cfg, createStringRange(oldFile, cfg), newFilePath);
+        }
+    }
+
+    function getFilesEntry(cfg: ObjectLiteralExpression, fileName: string): StringLiteral | undefined {
+        const filesProp = find(cfg.properties, (prop): prop is PropertyAssignment =>
+            isPropertyAssignment(prop) && isStringLiteral(prop.name) && prop.name.text === "files");
+        const files = filesProp && filesProp.initializer;
+        return files && isArrayLiteralExpression(files) ? find(files.elements, (e): e is StringLiteral => isStringLiteral(e) && e.text === fileName) : undefined;
+    }
+
     interface ToUpdate {
         readonly sourceFile: SourceFile;
         readonly toUpdate: StringLiteralLike | FileReference;
@@ -52,4 +69,8 @@ namespace ts {
             return ensurePathIsRelative(normalizePath(combinePaths(getDirectoryPath(oldPath), rel)));
         };
     }
+
+    function createStringRange(node: StringLiteralLike, sourceFile: SourceFileLike): TextRange {
+        return createTextRange(node.getStart(sourceFile) + 1, node.end - 1);
+    }
 }

tests/cases/fourslash/getEditsForFileRename.ts

@@ -12,6 +12,9 @@
 /////// <reference path="../old.ts" />
 ////import old from "../old";
 
+// @Filename: /tsconfig.json
+////{ "files": ["/a.ts", "/src/a.ts", "/src/foo/a.ts", "/src/old.ts"] }
+
 verify.getEditsForFileRename({
     oldPath: "/src/old.ts",
     newPath: "/src/new.ts",
@@ -19,5 +22,6 @@ verify.getEditsForFileRename({
         "/a.ts": '/// <reference path="./src/new.ts" />\nimport old from "./src/new";',
         "/src/a.ts": '/// <reference path="./new.ts" />\nimport old from "./new";',
         "/src/foo/a.ts": '/// <reference path="../new.ts" />\nimport old from "../new";',
+        "/tsconfig.json": '{ "files": ["/a.ts", "/src/a.ts", "/src/foo/a.ts", "/src/new.ts"] }',
     },
 });