import { FontDisplay, FontSource, FontResource, UnloadFontOptions } from './Font.types'; /** * Used to transform font family names to the scoped name. This does not need to * be called in standalone or bare apps but it will return unscoped font family * names if it is called in those contexts. * note(brentvatne): at some point we may want to warn if this is called * outside of a managed app. * * @param fontFamily name to process * @returns a name processed for use with the [current workflow](https://docs.expo.io/versions/latest/introduction/managed-vs-bare/) */ export declare function processFontFamily(fontFamily: string | null): string | null; /** * Synchronously detect if the font for `fontFamily` has finished loading * * @param fontFamily the name used to load the `FontResource`. * @returns `true` if the the font has fully loaded. */ export declare function isLoaded(fontFamily: string): boolean; /** * Synchronously detect if the font for `fontFamily` is still being loaded * * @param fontFamily the name used to load the `FontResource`. * @returns `true` if the the font is still loading. */ export declare function isLoading(fontFamily: string): boolean; /** * Natively load a font for use with Text elements. * @param fontFamilyOrFontMap string or map of values that can be used as the [`fontFamily`](https://reactnative.dev/docs/text#style) style prop with React Native Text elements. * @param source the font asset that should be loaded into the `fontFamily` namespace. */ export declare function loadAsync(fontFamilyOrFontMap: string | { [fontFamily: string]: FontSource; }, source?: FontSource): Promise; /** * Unloads all of the custom fonts. This is used for testing. */ export declare function unloadAllAsync(): Promise; /** * Unload custom fonts matching the `fontFamily`s and display values provided. * Because fonts are automatically unloaded on every platform this is mostly used for testing. * * @param fontFamilyOrFontMap the names of the custom fonts that will be unloaded. * @param source when `fontFamilyOrFontMap` is a string, this should be the font source used to load the custom font originally. */ export declare function unloadAsync(fontFamilyOrFontMap: string | { [fontFamily: string]: UnloadFontOptions; }, options?: UnloadFontOptions): Promise; export { FontDisplay, FontSource, FontResource, UnloadFontOptions };