import { mergeStyleSets } from '@uifabric/merge-styles'; export const commandBarClassNames = (compact: boolean): { [key: string]: string } => mergeStyleSets({ root: [compact && { selectors: { '& .ms-CommandBar-primaryCommands': { margin: 0 }, '& .ms-CommandBar-primaryCommands .ms-CommandBarItem-icon': { fontSize: 12 }, '& .ms-CommandBar-primaryCommands .ms-CommandBarItem-commandText': { fontSize: 12 }, '& .ms-CommandBar-primaryCommands .ms-CommandBarItem-link': { fontSize: 12 } } }] });