From a10cf176d5354bdb7616b9e2cfb565f3e8dd9607 Mon Sep 17 00:00:00 2001
From: Kerick Howlett <88661181+KerickHowlett@users.noreply.github.com>
Date: Mon, 7 Oct 2024 19:30:23 -0400
Subject: [PATCH] fix(core): allow for non-js libs to be moved without errors
 or the creation of any unneeded tsconfig files

closed #28349
---
 .../src/generators/move/lib/update-imports.ts | 47 ++++++++++---------
 packages/workspace/src/utilities/ts-config.ts | 21 ++++++---
 2 files changed, 38 insertions(+), 30 deletions(-)

diff --git a/packages/workspace/src/generators/move/lib/update-imports.ts b/packages/workspace/src/generators/move/lib/update-imports.ts
index 712fd0dc2c37a..d1eba3ec55b06 100644
--- a/packages/workspace/src/generators/move/lib/update-imports.ts
+++ b/packages/workspace/src/generators/move/lib/update-imports.ts
@@ -1,13 +1,13 @@
 import {
-  ChangeType,
-  ProjectConfiguration,
-  StringChange,
-  Tree,
   applyChangesToString,
+  ChangeType,
   getProjects,
   getWorkspaceLayout,
   joinPathFragments,
+  ProjectConfiguration,
   readJson,
+  StringChange,
+  Tree,
   visitNotIgnoredFiles,
   writeJson,
 } from '@nx/devkit';
@@ -17,6 +17,8 @@ import { getImportPath } from '../../../utilities/get-import-path';
 import {
   findNodes,
   getRootTsConfigPathInTree,
+  TSConfig,
+  type TSConfigFileName,
 } from '../../../utilities/ts-config';
 import { ensureTypescript } from '../../../utilities/typescript';
 import { NormalizedSchema } from '../schema';
@@ -43,28 +45,29 @@ export function updateImports(
 
   // use the source root to find the from location
   // this attempts to account for libs that have been created with --importPath
-  const tsConfigPath = getRootTsConfigPathInTree(tree);
-  let tsConfig: any;
-  let mainEntryPointImportPath: string;
-  let secondaryEntryPointImportPaths: string[];
-  let serverEntryPointImportPath: string;
+  const tsConfigPath: TSConfigFileName | null = getRootTsConfigPathInTree(tree);
+  let tsConfig: TSConfig | undefined;
+  let paths: string[] = [];
+
+  let mainEntryPointImportPath: string | undefined;
+  let secondaryEntryPointImportPaths: string[] = [];
+  let serverEntryPointImportPath: string | undefined;
+
   if (tree.exists(tsConfigPath)) {
     tsConfig = readJson(tree, tsConfigPath);
     const sourceRoot =
       project.sourceRoot ?? joinPathFragments(project.root, 'src');
 
-    mainEntryPointImportPath = Object.keys(
-      tsConfig.compilerOptions?.paths ?? {}
-    ).find((path) =>
+    paths = Object.keys(tsConfig?.compilerOptions.paths ?? {});
+
+    mainEntryPointImportPath = paths.find((path) =>
       tsConfig.compilerOptions.paths[path].some((x) =>
         x.startsWith(ensureTrailingSlash(sourceRoot))
       )
     );
-    secondaryEntryPointImportPaths = Object.keys(
-      tsConfig.compilerOptions?.paths ?? {}
-    ).filter((path) =>
+    secondaryEntryPointImportPaths = paths.filter((path) =>
       tsConfig.compilerOptions.paths[path].some(
-        (x) =>
+        (x: string) =>
           x.startsWith(ensureTrailingSlash(project.root)) &&
           !x.startsWith(ensureTrailingSlash(sourceRoot))
       )
@@ -72,9 +75,7 @@ export function updateImports(
 
     // Next.js libs have a custom path for the server we need to update that as well
     // example "paths": { @acme/lib/server : ['libs/lib/src/server.ts'] }
-    serverEntryPointImportPath = Object.keys(
-      tsConfig.compilerOptions?.paths ?? {}
-    ).find((path) =>
+    serverEntryPointImportPath = paths.find((path) =>
       tsConfig.compilerOptions.paths[path].some(
         (x) =>
           x.startsWith(ensureTrailingSlash(sourceRoot)) &&
@@ -148,8 +149,8 @@ export function updateImports(
       to: schema.relativeToRootDestination,
     };
 
-    if (tsConfig) {
-      const path = tsConfig.compilerOptions.paths[projectRef.from] as string[];
+    if (tsConfig && paths.length > 0) {
+      const path = tsConfig.compilerOptions.paths[projectRef.from];
       if (!path) {
         throw new Error(
           [
@@ -170,9 +171,9 @@ export function updateImports(
       } else {
         tsConfig.compilerOptions.paths[projectRef.from] = updatedPath;
       }
-    }
 
-    writeJson(tree, tsConfigPath, tsConfig);
+      writeJson(tree, tsConfigPath, tsConfig);
+    }
   }
 }
 
diff --git a/packages/workspace/src/utilities/ts-config.ts b/packages/workspace/src/utilities/ts-config.ts
index 927741226fc3c..f1fadeb0f2d73 100644
--- a/packages/workspace/src/utilities/ts-config.ts
+++ b/packages/workspace/src/utilities/ts-config.ts
@@ -1,11 +1,19 @@
 import { offsetFromRoot, Tree, workspaceRoot } from '@nx/devkit';
 import { existsSync } from 'fs';
 import { dirname, join } from 'path';
-import type { Node, SyntaxKind } from 'typescript';
+import type { CompilerOptions, Node, SyntaxKind } from 'typescript';
 import { ensureTypescript } from './typescript';
 
 let tsModule: typeof import('typescript');
 
+const TSCONFIG_FILE_NAMES = ['tsconfig.base.json', 'tsconfig.json'] as const;
+export type TSConfigFileName = (typeof TSCONFIG_FILE_NAMES)[number];
+
+export type TSConfig = {
+  compilerOptions: CompilerOptions;
+  [string: string]: unknown;
+};
+
 export function readTsConfig(tsConfigPath: string) {
   if (!tsModule) {
     tsModule = ensureTypescript();
@@ -20,15 +28,14 @@ export function readTsConfig(tsConfigPath: string) {
     dirname(tsConfigPath)
   );
 }
-
-export function getRootTsConfigPathInTree(tree: Tree): string | null {
-  for (const path of ['tsconfig.base.json', 'tsconfig.json']) {
+export function getRootTsConfigPathInTree(tree: Tree): TSConfigFileName | null {
+  for (const path of TSCONFIG_FILE_NAMES) {
     if (tree.exists(path)) {
       return path;
     }
   }
 
-  return 'tsconfig.base.json';
+  return null;
 }
 
 export function getRelativePathToRootTsConfig(
@@ -38,8 +45,8 @@ export function getRelativePathToRootTsConfig(
   return offsetFromRoot(targetPath) + getRootTsConfigPathInTree(tree);
 }
 
-export function getRootTsConfigFileName(): string | null {
-  for (const tsConfigName of ['tsconfig.base.json', 'tsconfig.json']) {
+export function getRootTsConfigFileName(): TSConfigFileName | null {
+  for (const tsConfigName of TSCONFIG_FILE_NAMES) {
     const tsConfigPath = join(workspaceRoot, tsConfigName);
     if (existsSync(tsConfigPath)) {
       return tsConfigName;