SUPPORTED_TYPESCRIPT_VERSIONS

[TrejGun]

yes I know you hate such types of bugs but still

so here you have

typescript-eslint/packages/typescript-estree/src/parser.ts

Line 23 in 5eedbff

const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <3.10.0';

good range which I like

const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <3.10.0';

but if i do

npm install @typescript-eslint/parser

i see another range which is outdated and i believe was fixed some time ago because in 2.x.x it works fine

test/node_modules/@typescript-eslint/typescript-estree/dist/parser.js

const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <3.8.0';

at the same time package.json in GH and in my local node_module shows same version 3.0.0

[tony]

Hi! Thank you for this project! Hopefully this information is of assistance.

I believe this issue presents to me like this:

=============

WARNING: You are currently running a version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree.

You may find that it works just fine, or you may not.

SUPPORTED TYPESCRIPT VERSIONS: >=3.3.1 <3.8.0

YOUR TYPESCRIPT VERSION: 3.9.3

Please only submit bug reports when using the officially supported version.

=============

eslint related packages:

    "@typescript-eslint/eslint-plugin": "^3.0.0",                                                                                                                                                                                                
    "@typescript-eslint/parser": "^3.0.0",                                                                                                                                                                                                       
    "eslint-config-prettier": "^6.11.0",                                                                                                                                                                                                         
    "eslint-loader": "^4.0.2",                                                                                                                                                                                                                   
    "eslint-plugin-prettier": "^3.1.3",
    "eslint-plugin-react": "^7.20.0",
    "gatsby-plugin-eslint": "^2.0.8",

Began happening after this upgrade:

diff --git a/package.json b/package.json
index e8bb660..d336448 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "@mdx-js/react": "^1.6.4",
     "emotion-theming": "^10.0.27",
     "flexsearch": "^0.6.32",
-    "gatsby": "^2.22.4",
+    "gatsby": "^2.22.6",
     "gatsby-image": "^2.4.5",
     "gatsby-plugin-catch-links": "^2.3.2",
     "gatsby-plugin-chakra-ui": "^0.1.4",
@@ -45,12 +45,12 @@
   },
   "devDependencies": {
     "@types/moment-duration-format": "^2.2.2",
-    "@types/node": "^14.0.4",
+    "@types/node": "^14.0.5",
     "@types/react": "^16.9.35",
     "@types/react-dom": "^16.9.8",
     "@types/react-helmet": "^6.0.0",
-    "@typescript-eslint/eslint-plugin": "^2.34.0",
-    "@typescript-eslint/parser": "^2.34.0",
+    "@typescript-eslint/eslint-plugin": "^3.0.0",
+    "@typescript-eslint/parser": "^3.0.0",
     "eslint-config-prettier": "^6.11.0",
     "eslint-loader": "^4.0.2",
     "eslint-plugin-prettier": "^3.1.3",

[photonstorm]

Just adding to this issue. Upgrading to 3.0.0 breaks VSCode integration. Likely, because of the error above (unsupported version), but VSCode doesn't know that, so you just get hundreds of lint errors instead, for code that worked fine yesterday. Running eslint on the command-line shows the SUPPORTED warning, which explains why VSCode is failing, but it isn't obvious from the IDE itself.

Downgrading to 2.34 fixes it, so I'll stay at that release for now.

[bradzacher]

The reason it isn't working with the release, but is correct in master is because it's been fixed in master. See #2057

This will be released on monday morning as part of our standard release cycle.

You can also consider using our canary tag, which is automatically released for every commit to master (i.e. includes the above change).