microsoft / microsoft/vscode-css-languageservice

[SCSS] Specificity values for nested rules are incorrect

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Dominant language
TypeScript
Stars
384
Forks
217
Avg merge
3d 16h
Merged PRs (30d)
14

Description

Discovered this issue while working on #249

200559512-a3643c9c-e465-4dc2-aefc-9cb242d641e8

input { #id { p { color: red; } } } - Specificity (0, 0, 1)

input #id p { color: red; } - Specificity (1, 0, 2)

Even though they are equivalent

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the nested SCSS example and comparing its reported specificity with the equivalent flat selector in the CSS language service. Trace how specificity is calculated for nested rules; done means both equivalent forms report (1, 0, 2).

Written by the indexing model from the issue text.

Assessment

Tech stack
scss, typescript
Domain
frontend, tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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