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Calculate the Code Quality score of your CSS based on a range of different quality guards.

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projectwallace/css-code-quality

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CSS Code Quality calculator

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Calculate the Code Quality score of your CSS based on a range of different quality guards.

This package analyzes your CSS on a high level and comes up with a score, divided into three areas:

  • Maintainability: how difficult is it for someone looking at the CSS from a high level to find the exact spot to fix a bug?
  • Complexity: how difficult is it for someone to make a change and be confident that they can make that change without side effects?
  • Performance: How likely is the CSS to have a negative impact on performance, based on high-level metrics? (Not including using hardware accelerated transforms and the like, because other tools are more suited for that.)

Installation

npm install @projectwallace/css-code-quality

Usage

import { calculate } from "@projectwallace/css-code-quality";

let css = `my_css { /* ... */ }`;
let result = calculate(css);

/*
The result shape looks something like this:

{
  "violations": [ ],
  "passes": [ ],
  "performance": {
    "score": 90,
    "violations": [ ],
    "passes": [ ]
  },
  "maintainability": {
    "score": 100,
    "violations": [ ],
    "passes": [ ]
  },
  "complexity": {
    "score": 97,
    "violations": [ ],
    "passes": [ ]
  }
}

Each `passes` or `violations` array contains an object that looks like this:

{
  "id": "EmptyRules",
  "score": 0,
  "value": 0
},
{
  "id": "AverageSelectorsPerRule",
  "score": 0,
  "value": 1.5,
  "actuals": [
    2,
    1
  ]
}

etc. etc.

*/

Related projects

  • CSS Analyzer - A CSS Analyzer that goes through your CSS to find all kinds of relevant statistics.
  • Wallace CLI - CLI tool for @projectwallace/css-analyzer
  • Constyble - CSS Complexity linter
  • Color Sorter - Sort CSS colors by hue, saturation, lightness and opacity