How to use css-size - 5 common examples

export function debugSize(inputCSS: string, result: CascadeTestResult): Promise {
  let testedMarkup = result.testedTemplates[0].testedMarkups[0];
  let inputHtml = testedMarkup.originalBody;
  let optimizedHtml = Promise.resolve({css: testedMarkup.optimizedBody});
  const optimizedCss = Promise.resolve({css: result.optimization.output.content.toString()});
  let templatePromise = cssSize.table(inputHtml, {}, () => optimizedHtml).then((table) => {
    console.log("Markup");
    console.log(table);
  });
  let cssPromise = cssSize.table(inputCSS, {}, () => optimizedCss).then((table) => {
    console.log("Styles");
    console.log(table);
  });
  return Promise.all([cssPromise, templatePromise]).then(() => {});
}

export function debugSize(inputCSS: string, result: CascadeTestResult): Promise {
  let testedMarkup = result.testedTemplates[0].testedMarkups[0];
  let inputHtml = testedMarkup.originalBody;
  let optimizedHtml = Promise.resolve({css: testedMarkup.optimizedBody});
  const optimizedCss = Promise.resolve({css: result.optimization.output.content.toString()});
  let templatePromise = cssSize.table(inputHtml, {}, () => optimizedHtml).then((table) => {
    console.log("Markup");
    console.log(table);
  });
  let cssPromise = cssSize.table(inputCSS, {}, () => optimizedCss).then((table) => {
    console.log("Styles");
    console.log(table);
  });
  return Promise.all([cssPromise, templatePromise]).then(() => {});
}

export function assertSmaller(inputCSS: string, result: CascadeTestResult, assertions?: DeltaAssertions): Promise {
  let testedMarkup = result.testedTemplates[0].testedMarkups[0];
  let inputHtml = testedMarkup.originalBody;
  let optimizedHtml = Promise.resolve({css: testedMarkup.optimizedBody});
  const optimizedCss = Promise.resolve({css: result.optimization.output.content.toString()});
  let templatePromise = cssSize.numeric(inputHtml, {}, () => optimizedHtml);
  let cssPromise = cssSize.numeric(inputCSS, {}, () => optimizedCss);
  return Promise.all([cssPromise, templatePromise]).then(([cssDelta, templateDelta]) => {
    assertDelta("uncompressed", cssDelta, templateDelta, assertions);
    assertDelta("gzip", cssDelta, templateDelta, assertions);
    assertDelta("brotli", cssDelta, templateDelta, assertions);
  });
}

export function assertSmaller(inputCSS: string, result: CascadeTestResult, assertions?: DeltaAssertions): Promise {
  let testedMarkup = result.testedTemplates[0].testedMarkups[0];
  let inputHtml = testedMarkup.originalBody;
  let optimizedHtml = Promise.resolve({css: testedMarkup.optimizedBody});
  const optimizedCss = Promise.resolve({css: result.optimization.output.content.toString()});
  let templatePromise = cssSize.numeric(inputHtml, {}, () => optimizedHtml);
  let cssPromise = cssSize.numeric(inputCSS, {}, () => optimizedCss);
  return Promise.all([cssPromise, templatePromise]).then(([cssDelta, templateDelta]) => {
    assertDelta("uncompressed", cssDelta, templateDelta, assertions);
    assertDelta("gzip", cssDelta, templateDelta, assertions);
    assertDelta("brotli", cssDelta, templateDelta, assertions);
  });
}

});
      } catch (e) {
        console.error(e);
        throw e;
      }
    };
});


var input = fs.readFileSync(process.argv[2])

var compactorOpts = {
  useBrotliDictionary: false
}

cssSize.table(input, compactorOpts, function(css, opts) {
  return postcss([
      unprefix,
      removePrefixes,
      //shorthandExpand,
      compactor(compactorOpts),
      autoprefixer({browsers: "last 2 versions"})
  ]).process(css).then(function(result) {
    fs.writeFileSync("min.css", result.css);
    return result;
  });
}).then(function(result) {
  console.log(result);
});