svgo.config-base.js

const addClassNamesPlugin = require('./add_classnames.svgo-plugin');

module.exports = {
  plugins: [
    {
      name: 'preset-default',
      params: {
        overrides: {
          removeViewBox: false
        }
      }
    },
    {
      name: 'addClassNamesPlugin',
      type: 'perItem',
      params: {
        rules: [
          {
            attribute: 'fill',
            value: '#222', // #222222 value in the svg gets shortened previously in the build, which requires the shortened value here as well
            className: 'fi-icon-base-fill'
          },
          {
            attribute: 'stroke',
            value: '#222',
            className: 'fi-icon-base-stroke'
          }
        ]
      },
      fn: function (item, params) {
        var patternMap = params.rules.map(function (rule) {
          return {
            pattern: [
              new RegExp(['^', rule.attribute, '$'].join(''), 'i'),
              new RegExp(['^', rule.value, '$'].join(''), 'i')
            ],
            className: rule.className
          };
        });

        patternMap.forEach(function (pm) {
          if (item.attrs) {
            for (const [name, value] of Object.entries(item.attrs)) {
              if (pm.pattern[0].test(name) && pm.pattern[1].test(value.value)) {
                item.class.add(pm.className);
              }
            }
          }
        });
      }
    }
  ]
};