js file extension not used

On default ESLint is not working for files with the extension js.

To get it working, i have to modify the plugin.xml of org.eclipse.wst.jsdt.core to change its file extension from js to js_

In addition i need to patch org.eclipse.wst.jsdt.internal.core.util.Util.getJavaLikeExtensions().

I wonder why others have no problems like this.

Others don't have this problem. most likely, because they don't have JSDT installed. Do you really need it to be installed for your projects?
Could you. please, put some light on what EPP package and version you're using?

I simply installed "Eclipse IDE for Enterprise Java and Web Developers" 2022-12 for Windows x86_64.

In addition i need to patch org.eclipse.wst.jsdt.internal.core.util.Util.getJavaLikeExtensions().

Why would patching there make a difference?

Within org.eclipse.wst.jsdt.internal.core.util.Util.getJavaLikeExtensions() the extension "js" is re-added.

Ok, but why would that make a difference? Is ESLint calling it?

Files with the extension js are opened with JSTD editor, instead of the Wild Web Developer editor.
And there is no way to change this behaviour in the preferences.

When you right click on a JavaScript file, which options are given in the Open With menu? And I still don't understand what that has to do with ESLint.

ESLint is not the origin of the problem, it can't be used, because the JSTD editor is opened on default. Which is installed with "Eclipse IDE for Enterprise Java and Web Developers" 2022-12 for Windows x86_64 together with the Wild Web Developer.

The Open With menu shows:
Generic Text Editor
Text Editor
System Editor
In-Place Editor
Default Editor
Other...

It's JSDT, not JSTD.

You don't have JSDT's editor in that list, which identified itself as the "JavaScript Editor" back when it existed, so it's not the one being opened. But again, I don't see the connection between the method you mentioned in JSDT and ESLint, or even what editor is opened and ESLint. I'm not saying ESLint is the cause of a problem, what I don't see is how it's even affected by that code.

The problem can be reproduced as follows:

Install Package "Eclipse IDE for Enterprise Java and Web Developers" 2022-12 for Windows x86_64
Open a JS file by double clicking on it
The opened file does not show any ESLint annotations, even if there should be any

Can you please try fetch a recent Eclipse SDK (last release or I-Buid), install latest snapshots of Wild Web Developer and LSP4E?

Hi,

I currently have a similar problem at work.

We use:

Eclipse IDE for Enterprise Java and Web Developers (includes Incubating components) Version: 2023-03 (4.27.0) Build id: 20230309-1520

Wild Web Developer HTML, CSS, JSON, Yaml, JavaScript, TypeScript, Node tools 1.1.0.202305041915 org.eclipse.wildwebdeveloper.feature.feature.group Eclipse Wild Web Developer project

There is ESlint installed globally and in-projet but there is no eslint marker on the left of the code.

Can you please share the version of LSP4E you have installed, and if it seems more than a month old, try installing latest snapshots of LSP4E?
I suspect eclipse-lsp4e/lsp4e@8f9220c has fixed it.

I have no idea, i just download the lastest version with http://download.eclipse.org/lsp4e/releases/latest/

Eclipse isn't at all my main editor, also tried with http://download.eclipse.org/lsp4e/snapshots/ but it's the same.

@Tenebrosful

@Tenebrosful The mentioned commit is probably not enough to have the issue fixed, I think you need to update to the latest snapshot version that contains eclipse-lsp4e/lsp4e@8d09a30 which is not released yet.
In order to give it a try you can install it from snapshots: https://download.eclipse.org/lsp4e/snapshots/

Still don't work, but maybe it's because it's not reading the .eslintrc ? Idk if there is a settings from my company that conflit or something like that. Or if there is something to config to tell it where is it.

Idk if it can help but here a log of LSP4E.

[2023-05-19T14: 25: 08.157416400+02: 00] LSP4E_TO_LANGUAGE_SERVER org.eclipse.wildwebdeveloper.eslint:
{
	"jsonrpc": "2.0",
	"id": "2",
	"method": "textDocument/codeAction",
	"params": {
		"textDocument": {
			"uri": "file:///C:/xxx/xxx/xxx/rootJavaProject/WebContent/src/ldap.js"
		},
		"range": {
			"start": {
				"line": 904,
				"character": 21
			},
			"end": {
				"line": 904,
				"character": 25
			}
		},
		"context": {
			"diagnostics": [
				{
					"range": {
						"start": {
							"line": 904,
							"character": 21
						},
						"end": {
							"line": 904,
							"character": 25
						}
					},
					"severity": 4,
					"code": 6133,
					"source": "typescript",
					"message": "\u0027data\u0027 is declared but its value is never read."
				}
			]
		}
	}
}

[2023-05-19T14: 25: 08.160408400+02: 00] LANGUAGE_SERVER_TO_LSP4E org.eclipse.wildwebdeveloper.eslint:
{
	"jsonrpc": "2.0",
	"id": "2",
	"result": []
}

It looks fine actualy that don't fit the .eslintrc rules

Ho ok, after testing it seems that my case is linked to #701 because it correctly works when i'm doing the same things that the issue demonstration do

@Tenebrosful

@Tenebrosful is this the only project where ESLint doesn't work as expected? Could you please, if possible, create and share a minimal example project that could demonstrate the issue?
Yes, the validation takes some time, but it should happen independently of invoking any actions or showing code action context menus and so on..

Idk, i only use eclipse for my company project. but according to the issue, it happen on project with Eclipse IDE for Entreprise Java and Web Developpers version

Still not working in Eclipse IDE for Enterprise Java and Web Developers 2024-03

Is this issue still relevant to anyone?

idk, leaved that job and ran away really far from eclipse

Still not wokring in version in 2025-12

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vrubezhny commented on Dec 19, 2022

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