Fix TypeStrong#1667 multiline function arguments support in REPL

src/repl.ts

@@ -680,6 +680,8 @@ const RECOVERY_CODES: Set<number> = new Set([
   1160, // "Unterminated template literal."
   1161, // "Unterminated regular expression literal."
   2355, // "A function whose declared type is neither 'void' nor 'any' must return a value."
+  2391, // "Function implementation is missing or not immediately following the declaration."
+  7010, // "Function, which lacks return-type annotation, implicitly has an 'any' return type."
 ]);
 
 /**

src/test/repl/repl.spec.ts

@@ -424,6 +424,32 @@ test.suite(
         expect(stdout).toContain(":1:1'\n");
       }
     );
+
+    // Serial because it's timing-sensitive
+    test.serial(
+      'multiline function args declaration is supported',
+      async (t) => {
+        const script = `function myFn(
+          a: string,
+          b: string
+        ) {
+          return a + ' ' + b
+        }
+        myFn('test', '!')
+        `;
+
+        // If first line of input ends in a semicolon, should not add a second semicolon.
+        // That will cause an extra blank line in the compiled output which will
+        // offset the stack line number.
+        const { stdout, stderr } = await t.context.executeInRepl(script, {
+          registerHooks: true,
+          startInternalOptions: { useGlobal: false },
+          waitPattern: 'done!',
+        });
+        expect(stderr).toBe('');
+        expect(stdout).toContain(`'test !'`);
+      }
+    );
   }
 );