Registry / testing / eslint-plugin-svelte3

eslint-plugin-svelte3

library4.0.0jsnpmunverified

An ESLint plugin for linting Svelte v3 components. Version 4.0.0 transforms Svelte compiler errors/warnings into ESLint messages, lints script blocks and template expressions with existing rules, and respects Svelte scoping (stores, reactive declarations). Requires ESLint 8+ and Svelte 3.2+. Differentiates from svelte-eslint-parser by being processor-based and using the Svelte compiler directly; deprecated in favor of eslint-plugin-svelte for Svelte 4+.

testing

npm install eslint-plugin-svelte3

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-PLUGIN-SVEL

eslint-plugin-svelte3

testingjavascriptv4.0.0

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

processor

✓ module.exports = { plugins: ['svelte3'], overrides: [{ files: ['*.svelte'], processor: 'svelte3/svelte3' }] }

✗ processor: 'svelte3'

Must be 'svelte3/svelte3' not just 'svelte3'

settings.svelte3/typescript

✓ settings: { 'svelte3/typescript': () => require('typescript') }

✗ settings: { svelte3: { typescript: true } }

Function form enables dynamic require; boolean true loads peer dependency

config with TypeScript parser

✓ parser: '@typescript-eslint/parser', plugins: ['svelte3','@typescript-eslint']

✗ parser: 'typescript-eslint-parser'

Use @typescript-eslint/parser (v2+) not the deprecated typescript-eslint-parser

Basic ESLint config for Svelte v3 using eslint-plugin-svelte3 processor, ignoring CSS styles.

// .eslintrc.js module.exports = { parserOptions: { ecmaVersion: 2019, sourceType: 'module' }, env: { es6: true, browser: true }, plugins: ['svelte3'], overrides: [ { files: ['*.svelte'], processor: 'svelte3/svelte3' } ], rules: { 'no-unused-vars': ['error', { varsIgnorePattern: '^\\$' }] }, settings: { 'svelte3/ignore-styles': () => true // ignore CSS linting } };

Debug

Known issues

deprecatedThis plugin is deprecated. Svelte 4+ users should use eslint-plugin-svelte with svelte-eslint-parser.

fix

Migrate to eslint-plugin-svelte (https://github.com/sveltejs/eslint-plugin-svelte)

affects: >=4.0.0

breakingVersion 4.0.0 requires ESLint 8+. ESLint 6/7 are no longer supported.

fix

Upgrade to ESLint 8+ or stick with v3 (deprecated) if using older ESLint.

affects: >=4.0.0

gotchaProcessor must be 'svelte3/svelte3', not 'svelte3'. The default export is not a processor.

fix

Set processor to 'svelte3/svelte3' in overrides.

affects: >=1.0.0

gotchaTypeScript mode requires passing the typescript package to settings.svelte3/typescript. Without it, template expressions are not linted.

fix

Add 'svelte3/typescript': () => require('typescript') to settings.

affects: >=3.0.0

deprecatedSetting 'svelte3/ignore-styles' returns a function now; in v3 it was a boolean. Booleans may cause unexpected behavior.

fix

Use a function: 'svelte3/ignore-styles': () => true

affects: >=4.0.0

Errors

Common errors & fixes

ESLint couldn't find the plugin "eslint-plugin-svelte3".

Plugin not installed or not in node_modules.

fix

Run: npm install --save-dev eslint-plugin-svelte3

Definition for rule 'no-unused-vars' was not found.

eslint-plugin-svelte3 does not define rules; it only provides a processor. The rule comes from eslint core.

fix

Ensure eslint is properly installed and your config includes 'eslint:recommended' or the rule explicitly.

Failed to load parser '@typescript-eslint/parser'.

Missing @typescript-eslint/parser package when using TypeScript.

fix

Install: npm install --save-dev @typescript-eslint/parser

The 'svelte3/svelte3' processor is not exported from the plugin.

Using an older version (<1.0.0) that didn't export the processor this way.

fix

Upgrade to >=1.0.0: npm install eslint-plugin-svelte3@latest

Upgrade

Version history

4.0.0latest on npm

Audit

Dependencies

eslintrequiredPeer dependency - plugin requires ESLint 8+ to function

svelterequiredPeer dependency - uses svelte/compiler internally

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/sveltejs/eslint-plugin-svelte3 ↗

packagehttps://www.npmjs.com/package/eslint-plugin-svelte3 ↗