# Add ability to run ESLint \(and other non-primary language server\) code actions on format \(\#8496\) · gitcafe/zed

[View on GitCafe](https://git.cafe/gitcafe/zed/commit/f8959834c4fec9a4848e008af810fd32feb42881)

Repository: [gitcafe/zed](https://git.cafe/gitcafe/zed)

Visibility: public

Requested revision: f8959834c4fec9a4848e008af810fd32feb42881

Requested commit: f8959834c4fec9a4848e008af810fd32feb42881

Commit: f8959834c4fec9a4848e008af810fd32feb42881

Tree: fa9459b2e0e2857eb9cb5772c7c79ee315868646

Author: Thorsten Ball

Committer: GitHub

## Message

````
Add ability to run ESLint (and other non-primary language server) code actions on format (#8496)

This PR does two things to fix
https://github.com/zed-industries/zed/issues/4325:

1. It changes the way `code_actions_on_format` works to send the
possibly configured code actions to _all_ (and not just the primary)
languages servers. That means configured code actions can now be sent to
ESLint, tailwind, ... and other language servers.
2. It enables `codeActionsOnSave` by default for ESLint. That does
**not** mean that by default we will run something on save, but only
that we enable it for ESLint.

Users can then configure their Zed to run the `eslint` code action on
format. Example, for JavaScript:

```json
    {
      "languages": {
        "JavaScript": {
          "code_actions_on_format": {
            "source.fixAll.eslint": true
          }
        },
      }
    }
```

Release Notes:

- Added ability to run ESLint fixes when formatting a buffer. Code
actions configured in
[`code_actions_on_format`](https://zed.dev/docs/configuring-zed#code-actions-on-format)
are now being sent to _all_ language servers connected to a buffer, not
just the primary one. So if a user now sets `"code_actions_on_format": {
"source.fixAll.eslint": true }` in their Zed settings, the
`source.fixAll.eslint` code action will be sent to ESLint, which is not
a primary language server. Since the formatter (prettier, or external
commands, or another language server, ...) still runs, it's important
that these code actions and the formatter don't clash.
([#4325](https://github.com/zed-industries/zed/issues/4325)).

Demo:



https://github.com/zed-industries/zed/assets/1185253/9ef03ad5-1f5c-4d46-b72a-eef611e32f39
````

## Parents

- [2e516261fe26061782fb2eec255267f4b1d14e80](https://git.cafe/gitcafe/zed/commit/2e516261fe26061782fb2eec255267f4b1d14e80?format=markdown)

[Source at this commit](https://git.cafe/gitcafe/zed/tree/f8959834c4fec9a4848e008af810fd32feb42881?format=markdown)