jtfell

Keybase proof

I hereby claim:

• I am jtfell on github.
• I am jtfell (https://keybase.io/jtfell) on keybase.
• I have a public key ASDgcNU_Bf-9CwPZNlSSVwZ8jc5tJTOfuU7TPut4LgD05Ao

To claim this, I am signing this object:

jtfell

{
  "numFailedTests": 0,
  "numPassedTests": 3,
  "numPendingTests": 0,
  "startTime": 1514867328411,
  "success": false,
  "sovereignty": "eu",
  "environment": "master",
  "testExecutions": [
    {

jtfell

var $ = require('jquery');
var DOMAIN = 'example-domain.com';

function guid() {
  return Math.floor((1 + Math.random()) * 0x10000)
    .toString(16)
    .substring(1);
}

function bin2guid(num) {

jtfell

var fs = require('fs');
var analyse = require('../src/index.js');

var css = fs.readFileSync('./test/basic.css', 'utf8');
analyse(css);

// Prints:
// { ratio: 1.4999140493583407, fit: 0.9999999752384222 }

jtfell

function calculateRatio(xs) {
  var uniqueSizes = xs.sort().filter(onlyUnique);
  return exponentialRegression(uniqueSizes);
}

function onlyUnique(value, index, self) {
  return self.indexOf(value) === index;
}

jtfell

function findFontSizeDecl(root) {
  var vals = [];

  // Iterate over font-size declarations
  root.walkDecls(/font-size/, function(decl) {
    vals.push(convertToEm(decl.value));
  });

  return vals;
};

jtfell

var postcss = require('postcss');

module.exports = function(css) {
  var root = postcss.parse(css);

  // 1. Parse the AST and collect all font-size declarations
  var properties = findFontSizeDecl(root);

  // 2. Calculate the ratio used and the quality of the fit
  var results = calculateRatio(properties);