The main purpose of this instruction is unclear. It can be rephrased to ask for an opinion on code quality. The suggested text seems incorrect regarding the import statement and it also contains syntax errors. Additionally, there's no suggestion for optimization as mentioned in instructions.
For instance:

export default {
    mounted() {
        const automationId = this.$route.query.automation_id;
        if (automationId !== undefined) {
            this.tableConfig.url += `?automation_id=${automationId}`;
        }

        const defaultExtraActions = this.tableConfig.columnsMeta.actions.formatterArgs.extraActions;

        // ... Your code here ...
    }
};

In this snippet of code:

• export default { /* ... */ } is not used correctly because it should be an object literal with key-value pairs defined inside curly braces {}.

• The function call to URLSearchParams() <this.$route.params>.toString() has been mistakenly executed twice due to the incorrect structure (.toString() on the right side).

To fix these issues:

export default {
  // ...
};

And make sure you are executing .toString() outside parameters when initializing URLSearchParams:

const params = new URLSearchParams(window.location.search);
// .toString() after window.location search will give proper data format

return {...}