---
title: MARKLESS_MODULE_INSTANCE_DIVERGENT_HANDLERS
description: "This module-scope instance would become one instance per handler: a Markless compiler error."
sidebar: { hidden: true }
search: { keywords: ["MODULE_INSTANCE_DIVERGENT_HANDLERS","module instance divergent handlers","markless error"] }
pagination: false
---

**Error** from the compiler, while it builds your `.tsrx` files.

## What happened

Markless prints the message, the reason, and a suggestion:

```text
MARKLESS_MODULE_INSTANCE_DIVERGENT_HANDLERS: Module-scope instance "<name>" is carried into <length> handler modules (<symbolIds>). Each of those modules runs its own constructor, so they hold <length> separate instances and anything one of them records is invisible to the others.
Every handler symbol module is loaded on its own when its handler first fires, so a declaration in the authoring file has to be copied into each one that names it. One handler gets the intended browser-side instance. Two or more get a copy each, and nothing at runtime reveals that they have drifted apart.
Move "<name>" and its class into their own module and import it. An import resolves to one module instance that every handler module shares, so the handlers agree.
https://markless.dev/errors/MARKLESS_MODULE_INSTANCE_DIVERGENT_HANDLERS
```

Words in angle brackets change from case to case.

## How to fix it

Start with the suggestion in the message above.

This page has no guide yet. [Help write it](/contributing/improve-these-docs).

## Where it comes from

`@markless/compiler` raises this code. Source:

- [packages/compiler/src/passes/symbol-modules.ts](https://github.com/compiled-run/markless/blob/main/packages/compiler/src/passes/symbol-modules.ts)

Read [how to read a Markless error](/tooling/diagnostics), or go back to [all error codes](/errors).