fix(mcp-server): guard execNpm npm_execpath with existsSync

cursoragent · cursoragent · commit 26e029450cfa · 2026-06-10T20:56:43.000Z
Fall back to plain npm when npm_execpath is set but the file is missing,
matching spawnNpx behavior.
diff --git a/mcp-server/test/npm-exec.ts b/mcp-server/test/npm-exec.ts
@@ -9,7 +9,7 @@ export function execNpm(
   args: string[],
   options: Parameters<typeof execFileSync>[2]
 ) {
-  if (npmCli) {
+  if (npmCli && existsSync(npmCli)) {
     return execFileSync(process.execPath, [npmCli, ...args], options);
   }
   return execFileSync("npm", args, options);

Original file line number	Diff line number	Diff line change
`@@ -9,7 +9,7 @@ export function execNpm(`
`9`	`9`	`args: string[],`
`10`	`10`	`options: Parameters<typeof execFileSync>[2]`
`11`	`11`	`) {`
`12`		`- if (npmCli) {`
	`12`	`+ if (npmCli && existsSync(npmCli)) {`
`13`	`13`	`return execFileSync(process.execPath, [npmCli, ...args], options);`
`14`	`14`	`}`
`15`	`15`	`return execFileSync("npm", args, options);`