text: // Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
  // See License.txt for license information.
  
  export function makeStyleFromTheme(getStyleFromTheme) {
      let lastTheme = null;
      let style = null;
  
      return (theme) => {
          if (theme !== lastTheme) {
              style = getStyleFromTheme(theme);
              lastTheme = theme;
          }
  
          return style;
      };
  }
  
  export function changeOpacity(oldColor, opacity) {
      let color = oldColor;
      if (color.length && color[0] === '#') {
          color = color.slice(1);
      }
  
      if (color.length === 3) {
          const tempColor = color;
          color = '';
  
          color += tempColor[0] + tempColor[0];
          color += tempColor[1] + tempColor[1];
          color += tempColor[2] + tempColor[2];
      }
  
      const r = parseInt(color.substring(0, 2), 16);
      const g = parseInt(color.substring(2, 4), 16);
      const b = parseInt(color.substring(4, 6), 16);
  
      return 'rgba(' + r + ',' + g + ',' + b + ',' + opacity + ')';
  }
  