ESLint

“I have been using those for more than a decade in node”

“it's plugins that make ESLint such a powerful platform that it still can't be replaced”

“now they are codified and provide instant feedback”

“eslint for AST-based code rule checking (easily picks up duplication for example)”

“Lots of breaking changes but I like where they landed”

“eslint -> oxlint (but in rust, and fast)”

“native replacements for eslint and prettier”

“I'd have preferred a simple eslint config with autofix on save”

“flagged the ESLint config file. Looked totally normal.”

“led to the creation of weird ecosystem like babel, webpack, eslint”

“Typescript with strict types and ultra-tight eslint config can give Rust a run for its money.”

“I haven't seen it get around my guard rails”

“These tools have been catching bugs reliably for years.”

“running ESLint and Prettier on your project and having a full build and formatting iteration take like 2 minutes”

“If you use eslint and tell it how to run lint in CLAUDE.md it will run lint itself and find and fix most issues like this.”

“ESLint/SonarQube don't even look for these”

“tools like eslint allow custom rules which are easy write with something like opus 4.6”

“It's excellent for enforcing code quality rules (formatting, unused variables, best practices, etc.)”

“You might also have success asking your agent to run `eslint` at the end of every subtask”

“Your tools just constantly changing wildly over a version upgrade”

“eslint has decided to kill off the APIs that support rules like `no-unused-modules`”

“ESLint on medium/big projects can be pretty slow and if you use type aware rules it opts out of caching”

“I've never been bothered by the performance of standard tooling”

“just using npm and eslint”

“They are what keep the AI's output from drifting into unmaintainable spaghetti code.”

“setting up a large number of static code analysis checks has had the highest impact on code quality”

“get actual syntax aware linting rather than relying on more brittle regex rules”

“it's so handy to be able to write a new lint rule or introduce an off-the-shelf rule without needing to fix all existing violations”

“I use a tested project template + .md files as well as ESLint + Stylelint and each project generally turns out pretty clean.”

“Tools like ESLint are also nice but focused a bit more on the code than architecture/structure.”

“You cannot simply patch ts or eslint via pnpm if you want to.”

“offload as much as you can from your AGENT.md file into type-checking, linters, etc.”

“does it understand the difference between eslint 8x and eslint 9.x?”

“flags real, serious issues but still allows you to be productive”

“airbnb is the default option, which ends up making it used very widely”

“by running the linter, if Claude does decide to inject this, it gets taken out, because the linter runs and then tells it so”

“you probably want the recommended preset for whatever ruleset exists for the stack you work with”

“I still haven't fully migrated every project I maintain to eslint 9”

“ESLint is now my only dev dependency with hundreds of dependencies of its own.”

“It's one of the reasons I still prefer ESLint over Prettier in JS land”