import { IconDefinition, IconPrefix } from '@fortawesome/fontawesome-common-types';
export declare class FaConfig {
    /**
     * Default prefix to use, when one is not provided with the icon name.
     *
     * @default 'fas'
     */
    defaultPrefix: IconPrefix;
    /**
     * Provides a fallback icon to use whilst main icon is being loaded asynchronously.
     * When value is null, then fa-icon component will throw an error if icon input is missing.
     * When value is not null, then the provided icon will be used as a fallback icon if icon input is missing.
     *
     * @default null
     */
    fallbackIcon: IconDefinition;
    /**
     * Set icons to the same fixed width.
     *
     * @see {@link: https://fontawesome.com/how-to-use/on-the-web/styling/fixed-width-icons}
     * @default false
     */
    fixedWidth?: boolean;
    /**
     * Whether components should lookup icon definitions in the global icon
     * library (the one available from
     * `import { library } from '@fortawesome/fontawesome-svg-core')`.
     *
     * See https://github.com/FortAwesome/angular-fontawesome/blob/master/docs/usage/icon-library.md
     * for detailed description of library modes.
     *
     * - 'unset' - Components should lookup icon definitions in the global library
     * and emit warning if they find a definition there. This option is a default
     * to assist existing applications with a migration. Applications are expected
     * to switch to using {@link FaIconLibrary}.
     * - true - Components should lookup icon definitions in the global library.
     * Note that global icon library is deprecated and support for it will be
     * removed. This option can be used to temporarily suppress warnings.
     * - false - Components should not lookup icon definitions in the global
     * library. Library will throw an error if missing icon is found in the global
     * library.
     *
     * @deprecated This option is deprecated since 0.5.0. In 0.6.0 default will
     * be changed to false. In 0.8.0 the option will be removed together with the
     * support for the global icon library.
     *
     * @default false
     */
    globalLibrary: boolean | 'unset';
}