BookStack/resources/js/wysiwyg/icons.js

const icons = {
    'table-delete-column': '<svg width="24" height="24"><path d="M21 19a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h14c1.1 0 2 .9 2 2zm-2 0V5h-4v2.2h-2V5h-2v2.2H9V5H5v14h4v-2.1h2V19h2v-2.1h2V19Z"/><path d="M14.829 10.585 13.415 12l1.414 1.414c.943.943-.472 2.357-1.414 1.414L12 13.414l-1.414 1.414c-.944.944-2.358-.47-1.414-1.414L10.586 12l-1.414-1.415c-.943-.942.471-2.357 1.414-1.414L12 10.585l1.344-1.343c1.111-1.112 2.2.627 1.485 1.343z" style="fill-rule:nonzero"/></svg>',
    'table-delete-row': '<svg width="24" height="24"><path d="M5 21a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v14c0 1.1-.9 2-2 2zm0-2h14v-4h-2.2v-2H19v-2h-2.2V9H19V5H5v4h2.1v2H5v2h2.1v2H5Z"/><path d="M13.415 14.829 12 13.415l-1.414 1.414c-.943.943-2.357-.472-1.414-1.414L10.586 12l-1.414-1.414c-.944-.944.47-2.358 1.414-1.414L12 10.586l1.415-1.414c.942-.943 2.357.471 1.414 1.414L13.415 12l1.343 1.344c1.112 1.111-.627 2.2-1.343 1.485z" style="fill-rule:nonzero"/></svg>',
    'table-insert-column-after': '<svg width="24" height="24"><path d="M16 5h-5v14h5c1.235 0 1.234 2 0 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11c1.229 0 1.236 2 0 2zm-7 6V5H5v6zm0 8v-6H5v6zm11.076-6h-2v2c0 1.333-2 1.333-2 0v-2h-2c-1.335 0-1.335-2 0-2h2V9c0-1.333 2-1.333 2 0v2h1.9c1.572 0 1.113 2 .1 2z"/></svg>',
    'table-insert-column-before': '<svg width="24" height="24"><path d="M8 19h5V5H8C6.764 5 6.766 3 8 3h11a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H8c-1.229 0-1.236-2 0-2zm7-6v6h4v-6zm0-8v6h4V5ZM3.924 11h2V9c0-1.333 2-1.333 2 0v2h2c1.335 0 1.335 2 0 2h-2v2c0 1.333-2 1.333-2 0v-2h-1.9c-1.572 0-1.113-2-.1-2z"/></svg>',
    'table-insert-row-above': '<svg width="24" height="24"><path d="M5 8v5h14V8c0-1.235 2-1.234 2 0v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8C3 6.77 5 6.764 5 8zm6 7H5v4h6zm8 0h-6v4h6zM13 3.924v2h2c1.333 0 1.333 2 0 2h-2v2c0 1.335-2 1.335-2 0v-2H9c-1.333 0-1.333-2 0-2h2v-1.9c0-1.572 2-1.113 2-.1z"/></svg>',
    'table-insert-row-after': '<svg width="24" height="24"><path d="M19 16v-5H5v5c0 1.235-2 1.234-2 0V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v11c0 1.229-2 1.236-2 0zm-6-7h6V5h-6zM5 9h6V5H5Zm6 11.076v-2H9c-1.333 0-1.333-2 0-2h2v-2c0-1.335 2-1.335 2 0v2h2c1.333 0 1.333 2 0 2h-2v1.9c0 1.572-2 1.113-2 .1z"/></svg>',
    table: '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg"><path d="M19 3a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5c0-1.1.9-2 2-2ZM5 14v5h6v-5zm14 0h-6v5h6zm0-7h-6v5h6zM5 12h6V7H5Z"/></svg>',
    'table-delete-table': '<svg width="24" height="24"><path d="M5 21a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v14c0 1.1-.9 2-2 2zm0-2h14V5H5v14z"/><path d="m13.711 15.423-1.71-1.712-1.712 1.712c-1.14 1.14-2.852-.57-1.71-1.712l1.71-1.71-1.71-1.712c-1.143-1.142.568-2.853 1.71-1.71L12 10.288l1.711-1.71c1.141-1.142 2.852.57 1.712 1.71L13.71 12l1.626 1.626c1.345 1.345-.76 2.663-1.626 1.797z" style="fill-rule:nonzero;stroke-width:1.20992"/></svg>',
};

/**
 * @param {Editor} editor
 */
export function registerCustomIcons(editor) {
    for (const [name, svg] of Object.entries(icons)) {
        editor.ui.registry.addIcon(name, svg);
    }
}