Registry / testing / remark-lint-no-duplicate-defined-urls

remark-lint-no-duplicate-defined-urls

library3.0.1jsnpmunverified

A remark-lint rule that warns when the same URL is defined multiple times in Markdown definitions. Current stable version is 3.0.1. It is part of the remark-lint ecosystem, focusing on detecting duplicate URLs to prevent mistakes. Unlike other lint rules that check for unused definitions, this targets duplicate URLs. It is ESM-only and requires Node.js 16+. Released as part of the remark-lint monorepo with regular updates.

testing

npm install remark-lint-no-duplicate-defined-urls

github ↗package ↗

INSTALL

IMPORT

SIG · REMARK-LINT-NO-DUP

remark-lint-no-duplicate-defined-urls

testingjavascriptv3.0.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

remarkLintNoDuplicateDefinedUrls

✓ import remarkLintNoDuplicateDefinedUrls from 'remark-lint-no-duplicate-defined-urls'

✗ const remarkLintNoDuplicateDefinedUrls = require('remark-lint-no-duplicate-defined-urls')

Package is ESM-only since v3. CommonJS require will fail.

default export

✓ import remarkLintNoDuplicateDefinedUrls from 'remark-lint-no-duplicate-defined-urls'

✗ import { remarkLintNoDuplicateDefinedUrls } from 'remark-lint-no-duplicate-defined-urls'

The package exports a default function, not a named export.

type import

✓ import type { Transformer } from 'unified'

Package does not export additional TypeScript types; use unified types if needed.

Set up remark-lint with the no-duplicate-defined-urls rule, parse a Markdown file, and report any lint messages.

import remarkLint from 'remark-lint' import remarkLintNoDuplicateDefinedUrls from 'remark-lint-no-duplicate-defined-urls' import remarkParse from 'remark-parse' import remarkStringify from 'remark-stringify' import { read } from 'to-vfile' import { unified } from 'unified' import { reporter } from 'vfile-reporter' const file = await read('example.md') await unified() .use(remarkParse) .use(remarkLint) .use(remarkLintNoDuplicateDefinedUrls) .use(remarkStringify) .process(file) console.error(reporter(file))

Debug

Known issues

breakingPackage is ESM-only since v3. CommonJS require will fail.

fix

Use import syntax instead of require().

affects: >=3.0.0

deprecatedSupport for Node.js versions below 16 is dropped as of v3.

fix

Upgrade Node.js to v16 or later.

affects: >=3.0.0

gotchaThe package is a default export, not a named export. Using named import will result in undefined.

fix

Use default import: import remarkLintNoDuplicateDefinedUrls from 'remark-lint-no-duplicate-defined-urls'

affects: >=1.0.0

gotchaThis rule must be used with remark-lint; it will not work if remark-lint is not in the plugin chain.

fix

Ensure .use(remarkLint) is called before this rule.

affects: >=1.0.0

Errors

Common errors & fixes

Error [ERR_REQUIRE_ESM]: require() of ES Module /path/to/remark-lint-no-duplicate-defined-urls/index.js not supported.

Using CommonJS require() to load an ESM-only package.

fix

Change to import statement or use dynamic import().

Unexpected definition with an already defined URL (as `mercury`), expected unique URLs

Two definitions in the Markdown file point to the same URL.

fix

Remove or rename one of the duplicate definitions.

TypeError: remarkLintNoDuplicateDefinedUrls is not a function

Using named import { remarkLintNoDuplicateDefinedUrls } instead of default import.

fix

Remove curly braces: import remarkLintNoDuplicateDefinedUrls from ...

Upgrade

Version history

3.0.1latest on npm

Audit

Dependencies

remark-lintrequiredrequired peer dependency to provide the linting framework

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/remarkjs/remark-lint.git#main ↗

packagehttps://www.npmjs.com/package/remark-lint-no-duplicate-defined-urls ↗