Setup remark config by adding remarkConfig to package.json. Config pulled directly from remark-lint readme.
Remove the trailing new line from pages\index.mdx.
Run npx eslint . --ext mdx and result is:
/workspace git:(master) ✗ npx eslint . --ext mdx
Oops! Something went wrong! :(
ESLint: 8.56.0
TypeError: Cannot use 'in' operator to search for 'start' in undefined
Occurred while linting /workspace/pages/index.mdx:1
Rule: "mdx/remark"
at Program (/workspace/node_modules/eslint-plugin-mdx/lib/rules/remark.js:67:38)
at ruleErrorHandler (/workspace/node_modules/eslint/lib/linter/linter.js:1076:28)
at /workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:58
at Array.forEach ()
at Object.emit (/workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:38)
at NodeEventGenerator.applySelector (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:297:26)
at NodeEventGenerator.applySelectors (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:326:22)
at NodeEventGenerator.enterNode (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:340:14)
at CodePathAnalyzer.enterNode (/workspace/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js:803:23)
at /workspace/node_modules/eslint/lib/linter/linter.js:1111:32
### Expected behavior
eslint should output:
```bash
/workspace git:(master) ✗ npx eslint . --ext mdx
/workspace/pages/index.mdx
1:1 warning Missing newline character at end of file remark-lint-final-newline
✖ 1 problem (0 errors, 1 warning)
0 errors and 1 warning potentially fixable with the `--fix` option.
Actual behavior
eslint outputs:
/workspace git:(master) ✗ npx eslint . --ext mdx
Oops! Something went wrong! :(
ESLint: 8.56.0
TypeError: Cannot use 'in' operator to search for 'start' in undefined
Occurred while linting /workspace/pages/index.mdx:1
Rule: "mdx/remark"
at Program (/workspace/node_modules/eslint-plugin-mdx/lib/rules/remark.js:67:38)
at ruleErrorHandler (/workspace/node_modules/eslint/lib/linter/linter.js:1076:28)
at /workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:58
at Array.forEach (<anonymous>)
at Object.emit (/workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:38)
at NodeEventGenerator.applySelector (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:297:26)
at NodeEventGenerator.applySelectors (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:326:22)
at NodeEventGenerator.enterNode (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:340:14)
at CodePathAnalyzer.enterNode (/workspace/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js:803:23)
at /workspace/node_modules/eslint/lib/linter/linter.js:1111:32
Initial checklist
Affected packages and versions
"eslint-plugin-mdx": "^3.1.4"
Link to runnable example
https://codesandbox.io/p/devbox/eslint-plugin-mdx-typeerror-remark-lint-xqwl2v
Steps to reproduce
Steps to reproduce:
eslint
andeslint-mdx
.eslintrc
. Config pulled directly from readme.remark-lint
. referenceremarkConfig
topackage.json
. Config pulled directly from remark-lint readme.pages\index.mdx
.npx eslint . --ext mdx
and result is:Oops! Something went wrong! :(
ESLint: 8.56.0
TypeError: Cannot use 'in' operator to search for 'start' in undefined Occurred while linting /workspace/pages/index.mdx:1 Rule: "mdx/remark" at Program (/workspace/node_modules/eslint-plugin-mdx/lib/rules/remark.js:67:38) at ruleErrorHandler (/workspace/node_modules/eslint/lib/linter/linter.js:1076:28) at /workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:58 at Array.forEach ()
at Object.emit (/workspace/node_modules/eslint/lib/linter/safe-emitter.js:45:38)
at NodeEventGenerator.applySelector (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:297:26)
at NodeEventGenerator.applySelectors (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:326:22)
at NodeEventGenerator.enterNode (/workspace/node_modules/eslint/lib/linter/node-event-generator.js:340:14)
at CodePathAnalyzer.enterNode (/workspace/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js:803:23)
at /workspace/node_modules/eslint/lib/linter/linter.js:1111:32
Actual behavior
eslint outputs:
Runtime
Node v20
Package manager
npm v9
OS
Linux
Build and bundle tools
Next.js