@atlaskit/editor-core/src/schema/marks/index.ts

A package contains Atlassian editor core functionality

export { em } from './em';
export { code } from './code';
export { strike } from './strike';
export { strong } from './strong';
export { underline } from './underline';
export { link } from './link';
export { emojiQuery } from './emoji-query';
export { mentionQuery } from './mention-query';
export { subsup } from './subsup';
export { textColor } from './text-color';