import type { GoogleFontFamily } from "@excalidraw/common";
import { ExcalidrawFontFace } from "./ExcalidrawFontFace";
import type { ExcalidrawFontFaceDescriptor } from "./Fonts";
export declare const DEFAULT_GOOGLE_FONT_WEIGHT = 400;
/**
 * Font id format: `google:<Family>@<weight>`; no suffix means 400.
 * Returns `null` if the id is not a Google font id.
 */
export declare const parseGoogleFontId: (fontId: unknown) => {
    family: string;
    weight: number;
} | null;
export declare const formatGoogleFontId: (family: string, weight?: number) => GoogleFontFamily;
type GoogleFontCssSources = (family: string) => readonly string[];
/**
 * Host-provided CSS2 base URLs per family, tried in order. The `family` and
 * `display` params are set by the fork. `undefined` restores the default.
 */
export declare const setGoogleFontCssSources: (sources: GoogleFontCssSources | undefined) => void;
/**
 * Marks a source as failed for the session.
 * Returns `true` if the family has another source left to try.
 */
export declare const markGoogleFontSourceFailed: (family: string, source: string) => boolean;
export declare const resetGoogleFontSourceFailures: () => void;
export declare const getGoogleFontCssUrl: (family: string, weight?: number, source?: string) => URL;
/**
 * `base` is the CSS URL; relative srcs (e.g. from a relay) resolve against it.
 */
export declare const parseGoogleFontFaceCss: (css: string, base?: string | URL) => ExcalidrawFontFaceDescriptor[];
/**
 * Loads the faces of a Google font id, trying the CSS sources in order.
 * A source that fails with a network error, 5xx or 429 is skipped for the
 * rest of the session; other errors only make this family try the next source.
 */
export declare const loadGoogleFontFaces: (fontId: GoogleFontFamily) => Promise<{
    fontFaces: ExcalidrawFontFace[];
    source: string;
}>;
export {};