TypeError: can't access property "nodeType", S is null

[ops-handler]

Error

can't access property "nodeType", S is null

Stack trace

../node_modules/easymde/node_modules/codemirror/lib/codemirror.js:9257 in walk
../node_modules/easymde/node_modules/codemirror/lib/codemirror.js:9285 in domTextBetween
../node_modules/easymde/node_modules/codemirror/lib/codemirror.js:9123 in ContentEditableInput.prototype.pollContent
../node_modules/easymde/node_modules/codemirror/lib/codemirror.js:9192 in ContentEditableInput.prototype.updateFromDOM
../node_modules/easymde/node_modules/codemirror/lib/codemirror.js:9185 in this.readDOMTimeout
../node_modules/@sentry/browser/src/helpers.ts:117 in sentryWrapped

Tracking Details

• Project: exercism-js
• Sentry: TypeError: can't access property "nodeType", S is null
• Culprit: walk(easymde/node_modules/codemirror/lib/codemirror)
• First seen: Apr 6, 2026