linter: Cannot detect not defined errors #20039
Description
What version of Oxlint are you using?
Version: 1.50.0
What command did you run?
bunx oxlint . --quiet
What does your .oxlintrc.json (or oxlint.config.ts) config file look like?
This is my .oxlintrc.json
which is migrated using bunx @oxlint/migrate on our existing eslint.config.js
const globals = require("globals");
module.exports = [
{
languageOptions: {
parserOptions: {
requireConfigFile: false,
},
globals: {
...globals.node,
...globals.commonjs,
...globals.es2021,
},
},
rules: {
"no-undef": "error",
"no-unused-vars": [
"warn",
{
args: "all",
argsIgnorePattern: "^(_|next|req|res|error)$",
},
],
},
},
{
files: [
"**/appNotificationTemplates.js",
"**/smsTemplates.js",
"**/emailTemplates.js",
],
rules: {
"no-unused-vars": "off",
},
},
];
What happened?
I am evaluating oxc for replacing eslint and prettier in our company. I noticed that it is not detecting all undefined errors
instaservice@Instaservices-MacBook-Pro backend-suite % time bunx oxlint . --quiet
Found 1018 warnings and 0 errors.
Finished in 19ms on 1421 files with 1 rules using 11 threads.
bunx oxlint . --quiet 0.10s user 0.09s system 326% cpu 0.057 total
instaservice@Instaservices-MacBook-Pro backend-suite % time bunx eslint . --quiet
/Users/instaservice/Projects/Instaservice/backend-suite/account-service/src/consumers/index.js
1281:9 error 'spTokenMap' is not defined no-undef
1282:29 error 'spTokenMap' is not defined no-undef
1283:25 error 'spTokenMap' is not defined no-undef
✖ 3 problems (3 errors, 0 warnings)
bunx eslint . --quiet 2.41s user 0.21s system 167% cpu 1.562 total
instaservice@Instaservices-MacBook-Pro backend-suite %
Also noticed that oxlint throws few less warnings. eslint shows 1026 warnings, while oxlint shows 1018 warnings. Tried with both bunx and npx.
instaservice@Instaservices-MacBook-Pro backend-suite % bunx eslint --version
v9.39.2
instaservice@Instaservices-MacBook-Pro backend-suite % bunx oxlint --version
Version: 1.50.0
{ "$schema": "./node_modules/oxlint/configuration_schema.json", "plugins": [], "categories": { "correctness": "off" }, "env": { "builtin": true, "commonjs": true, "es2024": true }, "rules": { "no-unused-vars": [ "warn", { "args": "all", "argsIgnorePattern": "^(_|next|req|res|error)$" } ] }, "globals": { "__dirname": "readonly", "__filename": "readonly", "AbortController": "readonly", "AbortSignal": "readonly", "atob": "readonly", "Blob": "readonly", "BroadcastChannel": "readonly", "btoa": "readonly", "Buffer": "readonly", "ByteLengthQueuingStrategy": "readonly", "clearImmediate": "readonly", "clearInterval": "readonly", "clearTimeout": "readonly", "CloseEvent": "readonly", "CompressionStream": "readonly", "console": "readonly", "CountQueuingStrategy": "readonly", "crypto": "readonly", "Crypto": "readonly", "CryptoKey": "readonly", "CustomEvent": "readonly", "DecompressionStream": "readonly", "DOMException": "readonly", "Event": "readonly", "EventTarget": "readonly", "fetch": "readonly", "File": "readonly", "FormData": "readonly", "Headers": "readonly", "MessageChannel": "readonly", "MessageEvent": "readonly", "MessagePort": "readonly", "navigator": "readonly", "Navigator": "readonly", "performance": "readonly", "Performance": "readonly", "PerformanceEntry": "readonly", "PerformanceMark": "readonly", "PerformanceMeasure": "readonly", "PerformanceObserver": "readonly", "PerformanceObserverEntryList": "readonly", "PerformanceResourceTiming": "readonly", "process": "readonly", "queueMicrotask": "readonly", "ReadableByteStreamController": "readonly", "ReadableStream": "readonly", "ReadableStreamBYOBReader": "readonly", "ReadableStreamBYOBRequest": "readonly", "ReadableStreamDefaultController": "readonly", "ReadableStreamDefaultReader": "readonly", "Request": "readonly", "Response": "readonly", "setImmediate": "readonly", "setInterval": "readonly", "setTimeout": "readonly", "structuredClone": "readonly", "SubtleCrypto": "readonly", "TextDecoder": "readonly", "TextDecoderStream": "readonly", "TextEncoder": "readonly", "TextEncoderStream": "readonly", "TransformStream": "readonly", "TransformStreamDefaultController": "readonly", "URL": "readonly", "URLSearchParams": "readonly", "WebAssembly": "readonly", "WebSocket": "readonly", "WritableStream": "readonly", "WritableStreamDefaultController": "readonly", "WritableStreamDefaultWriter": "readonly" }, "overrides": [ { "files": [ "**/appNotificationTemplates.js", "**/smsTemplates.js", "**/emailTemplates.js" ], "rules": { "no-unused-vars": "off" } } ] }