get entrypoint file

.chronus/changes/TraverseEntrypointFile-2025-1-28-17-33-47.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - typespec-vscode
+---
+
+Develop strategies to obtain the entry point file. 

packages/typespec-vscode/src/typespec-utils.ts

@@ -11,28 +11,9 @@ export async function getEntrypointTspFile(tspPath: string): Promise<string | un
   let baseDir = isFilePath ? getDirectoryPath(tspPath) : tspPath;
 
   while (true) {
-    const pkgPath = path.resolve(baseDir, "package.json");
-    if (await isFile(pkgPath)) {
-      /* get the tspMain from package.json. */
-      try {
-        const data = await readFile(pkgPath, { encoding: "utf-8" });
-        const packageJson = JSON.parse(data);
-        const tspMain = packageJson.tspMain;
-        if (typeof tspMain === "string") {
-          const tspMainFile = path.resolve(baseDir, tspMain);
-          if (await isFile(tspMainFile)) {
-            logger.debug(`tspMain file ${tspMainFile} selected as entrypoint file.`);
-            return tspMainFile;
-          }
-        }
-      } catch (error) {
-        logger.error(`An error occurred while reading the package.json file ${pkgPath}`, [error]);
-      }
-    }
-
-    const mainTspFile = path.resolve(baseDir, StartFileName);
-    if (await isFile(mainTspFile)) {
-      return mainTspFile;
+    const entrypointTspFile = await getEntrypointTspFileInFolder(baseDir);
+    if (entrypointTspFile) {
+      return entrypointTspFile;
     }
     const parentDir = getDirectoryPath(baseDir);
     if (parentDir === baseDir) {
@@ -41,6 +22,9 @@ export async function getEntrypointTspFile(tspPath: string): Promise<string | un
     baseDir = parentDir;
   }
 
+  /* if there is no defined main entry point tsp file, return the selected tsp file. */
+  if (isFilePath) return tspPath;
+
   return undefined;
 }
 
@@ -53,3 +37,56 @@ export async function TraverseMainTspFileInWorkspace() {
         .map((uri) => normalizeSlashes(uri.fsPath)),
     );
 }
+
+export async function TraverseEntrypointTspFileInWorkspace(): Promise<string[]> {
+  const targetFolders = await vscode.workspace
+    .findFiles(`**/${StartFileName}`, "**/node_modules/**")
+    .then((uris) => {
+      const directories = new Set<string>();
+      uris
+        .filter((uri) => uri.scheme === "file" && !uri.fsPath.includes("node_modules"))
+        .map((uri) => directories.add(getDirectoryPath(normalizeSlashes(uri.fsPath))));
+      return Array.from(directories);
+    });
+  const entrypointTspFiles: string[] = [];
+
+  for (const folder of targetFolders) {
+    while (true) {
+      const entrypointTspFile = await getEntrypointTspFileInFolder(folder);
+      if (entrypointTspFile) {
+        entrypointTspFiles.push(entrypointTspFile);
+      }
+    }
+  }
+
+  return entrypointTspFiles;
+}
+
+async function getEntrypointTspFileInFolder(folder: string): Promise<string | undefined> {
+  if (await isFile(folder)) return undefined;
+  const pkgPath = path.resolve(folder, "package.json");
+  if (await isFile(pkgPath)) {
+    /* get the tspMain from package.json. */
+    try {
+      const data = await readFile(pkgPath, { encoding: "utf-8" });
+      const packageJson = JSON.parse(data);
+      const tspMain = packageJson.tspMain;
+      if (typeof tspMain === "string") {
+        const tspMainFile = path.resolve(folder, tspMain);
+        if (await isFile(tspMainFile)) {
+          logger.debug(`tspMain file ${tspMainFile} selected as entrypoint file.`);
+          return tspMainFile;
+        }
+      }
+    } catch (error) {
+      logger.error(`An error occurred while reading the package.json file ${pkgPath}`, [error]);
+    }
+  }
+
+  const mainTspFile = path.resolve(folder, StartFileName);
+  if (await isFile(mainTspFile)) {
+    return mainTspFile;
+  }
+
+  return undefined;
+}

packages/typespec-vscode/src/vscode-cmd/emit-code/emit-code.ts

@@ -8,7 +8,10 @@ import logger from "../../log/logger.js";
 import { InstallAction, npmDependencyType, NpmUtil } from "../../npm-utils.js";
 import { getDirectoryPath } from "../../path-utils.js";
 import { resolveTypeSpecCli } from "../../tsp-executable-resolver.js";
-import { getEntrypointTspFile, TraverseMainTspFileInWorkspace } from "../../typespec-utils.js";
+import {
+  getEntrypointTspFile,
+  TraverseEntrypointTspFileInWorkspace,
+} from "../../typespec-utils.js";
 import { ExecOutput, isFile, spawnExecutionAndLogToOutput } from "../../utils.js";
 import { EmitQuickPickItem } from "./emit-quick-pick-item.js";
 import {
@@ -386,7 +389,7 @@ async function doEmit(mainTspFile: string, emitter: Emitter) {
 export async function emitCode(context: vscode.ExtensionContext, uri: vscode.Uri) {
   let tspProjectFile: string = "";
   if (!uri) {
-    const targetPathes = await TraverseMainTspFileInWorkspace();
+    const targetPathes = await TraverseEntrypointTspFileInWorkspace();
     logger.info(`Found ${targetPathes.length} ${StartFileName} files`);
     if (targetPathes.length === 0) {
       logger.info(`No entrypoint file (${StartFileName}) found. Generating Cancelled.`, [], {