emit exit code only in lint mode

tooling/compile-to-definitions.js

@@ -65,8 +65,8 @@ const makeDefinitionsForSchema = absSchemaPath => {
 							"/"
 						)}.d.ts need to be updated`
 					);
+					process.exitCode = 1;
 				}
-				process.exitCode = 1;
 			}
 		},
 		err => {

tooling/format-schemas.js

@@ -124,8 +124,8 @@ const formatSchema = schemaPath => {
 				console.error(
 					`schemas/${basename.replace(/\\/g, "/")} need to be updated`
 				);
+				process.exitCode = 1;
 			}
-			process.exitCode = 1;
 		}
 	});
 };

tooling/inherit-types.js

@@ -137,8 +137,8 @@ for (const sourceFile of program.getSourceFiles()) {
 					);
 				}
 				console.log();
+				process.exitCode = 1;
 			}
-			process.exitCode = 1;
 		}
 	}
 }