microsoft / microsoft/monaco-editor
Do not use inline styles!
Nobody has claimed this yet.
- Dominant language
- JavaScript
- Stars
- 46.8k
- Forks
- 4.1k
- Avg merge
- 17h 58m
- Merged PRs (30d)
- 1
Description
monaco-editor npm version: 0.7.0
Browser: Edge, Chrome
OS: Windows
We use up to date CSP security rules and deny inline styles to prevent browser-based attacks:
default-src: 'none'; style-src: 'self';
The editor uses inline styles instead of DOM manipulation which is not allowed in a context like this. The browsers refuse to apply these styles which makes the editor render unreadable:
Refused to apply inline style because it violates the following Content Security Policy directive: "style-src 'self'". Either the 'unsafe-inline' keyword, a hash ('sha256-DNZrVDWDsOLjYnOQ2E2tq7OIosyNLfBDcLuoNqGotlQ='), or a nonce ('nonce-...') is required to enable inline execution.```Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the unreadable editor with the reported CSP in Edge or Chrome, then inspect editor.main.js around line 59 to locate the inline-style path. Trace how the editor applies those styles and determine whether the affected rendering can work without inline styles. Done means the editor renders correctly under style-src 'self' without weakening the CSP.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- frontend, security
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100