fix: throw an error when running "vitest typecheck"

packages/vitest/src/node/cli.ts

@@ -76,6 +76,13 @@ cli
   .command('bench [...filters]')
   .action(benchmark)
 
+// TODO: remove in Vitest 2.0
+cli
+  .command('typecheck [...filters]')
+  .action(() => {
+    throw new Error(`Running typecheck via "typecheck" command is removed. Please use "--typecheck" to run your regular tests alongside typechecking, or "--typecheck.only" to run only typecheck tests.`)
+  })
+
 cli
   .command('[...filters]')
   .action((filters, options) => start('test', filters, options))