Ligature fonts for atom

styles.less

atom-text-editor {
  font-family: 'Fira Code';
  font-style: normal;
  text-rendering: optimizeLegibility;
}

atom-text-editor::shadow {
  .string.quoted,
  .string.regexp {
    -webkit-font-feature-settings: "liga" off, "calt" off;
  }

  .source.js.jsx > .keyword.control.flow.js,
  .storage,
  .type .function {
    font-family: 'flottflott';
    font-size: 2.5rem;
    line-height: 0.75;
  }

  .comment {
    font-style: italic;
  }

  .indent-guide,
  .source.js.jsx,
  .storage.type.function.arrow.js,
  .variable {
    font-family: 'Fira Code';
    font-style: normal;
  }

  .storage.type.function.arrow.js {
    font-size: 2rem;
    line-height: 0.75;
  }

  .string.unquoted.js {
    color: #CDD3DE;
  }
}