import { SignInProviderType } from './types.js';
/**
 * Utility class for generating realistic, Firebase-like identifiers for tests.
 *
 * @remarks
 * Provides helpers for synthesizing:
 * - Firebase-style UIDs,
 * - provider-specific UIDs,
 * - project numbers and web app IDs,
 * - numeric, hex, alphanumeric, and base64-like identifiers.
 *
 * All values are pseudo-random (via `Math.random()`) and **not cryptographically secure**.
 * Intended solely for mocks, fixtures, and deterministic test environments.
 */
export declare class IdGenerator {
    /**
     * Build a Firebase-like web App ID from a project number.
     *
     * @param projectNumber - A 12-digit numeric string (see {@link projectNumber}).
     * @returns A string like `1:<projectNumber>:web:<hex>`.
     *
     * @remarks
     * - The trailing hex segment is 22 hex chars generated via `Math.random()`; **not cryptographically secure**.
     * - Intended for mocks/tests only.
     */
    static appId(projectNumber: string): string;
    /**
     * Generate a pseudo-random numeric Firebase project number.
     *
     * @returns A numeric string of length 12, not starting with 0.
     *
     * @remarks
     * Uses `Math.random()`; **not cryptographically secure**.
     */
    static projectNumber(): string;
    /**
     * Generate a pseudo-random Firebase-like user ID.
     *
     * @returns An alphanumeric string of length 28.
     *
     * @remarks
     * - Uses `Math.random()`; **not cryptographically secure**.
     * - Suitable for tests and mock identities.
     */
    static firebaseUid(): string;
    /**
     * Generates a realistic-looking provider-specific UID for a given sign-in provider type.
     *
     * @remarks
     * This helper is used to synthesize provider UIDs (for example, `providerData[n].uid`)
     * that resemble those issued by real providers, without needing to match their
     * exact formats. The output is **not** guaranteed to be unique, but is suitable
     * for tests and fixtures that need plausible identifiers.
     *
     * Known provider types use specialized patterns:
     *
     * - `'google' → 21-digit numeric ID
     * - `'apple'` → `NNNNNN.<32 hex>.[NNNN]` composite ID
     * - `'facebook'` → 17-digit numeric ID
     * - `'twitter'` → 18-digit numeric ID
     * - `'github'` → 10-digit numeric ID
     * - `'microsoft'` → 32-character hex ID
     * - `'yahoo'` → 26-character uppercase alphanumeric ID
     * - `'playgames'` → 20-character base64-like ID
     * - `'gamecenter'` → `G:<10 digit numeric>` ID
     *
     * Any unrecognized `type` falls back to a Firebase-style `uid` generated by
     * {@link firebaseUid}.
     *
     * @param type - Canonical identifier (for example,
     * `'google'`) indicating which provider format to emulate.
     * @returns A synthetic provider UID string matching the chosen provider pattern
     * or a Firebase-style UID for `'aonymous'`, `'custom'`, `'password'`, and `'phone'` types.
     */
    static providerTypeUid(type: SignInProviderType): string;
    /**
     * Generates a realistic-looking provider-specific UID for a given sign-in provider.
     *
     * @remarks
     * This helper is used to synthesize provider UIDs (for example, `providerData[n].uid`)
     * that resemble those issued by real providers, without needing to match their
     * exact formats. The output is **not** guaranteed to be unique, but is suitable
     * for tests and fixtures that need plausible identifiers.
     *
     * Known provider types use specialized patterns:
     *
     * - `'google'` / `'google.com'`   → 21-digit numeric ID
     * - `'apple'` / `'apple.com'`     → `NNNNNN.<32 hex>.[NNNN]` composite ID
     * - `'facebook'` / `'facebook.com'` → 17-digit numeric ID
     * - `'twitter'` / `'twitter.com'` → 18-digit numeric ID
     * - `'github'` / `'github.com'`   → 10-digit numeric ID
     * - `'microsoft'` / `'microsoft.com'` → 32-character hex ID
     * - `'yahoo'` / `'yahoo.com'`     → 26-character uppercase alphanumeric ID
     * - `'playgames'` / `'playgames.google.com'` → 20-character base64-like ID
     * - `'gamecenter'` / `'gc.apple.com'` → `G:<10 digit numeric>` ID
     *
     * Any unrecognized `type` falls back to a Firebase-style `uid` generated by
     * {@link firebaseUid}.
     *
     * @param type - Canonical or provider-style identifier (for example,
     * `'google'` or `'google.com'`) indicating which provider format to emulate.
     * @returns A synthetic provider UID string matching the chosen provider pattern
     * or a Firebase-style UID for generic and unknown types.
     */
    static providerUid(type: string): string;
    /**
     * Generate a pseudo-random numeric identifier of a given length.
     *
     * @param length - Total length (1–128). First digit is 1–9 (no leading zero).
     * @returns A numeric string.
     *
     * @remarks
     * Uses `Math.random()`; **not cryptographically secure**.
     * @internal
     */
    static numericId(length: number): string;
    /**
     * Generate a pseudo-random lowercase-hex identifier.
     *
     * @param length - Length (1–128).
     * @returns A hex string using `[0-9a-f]`.
     *
     * @remarks
     * Uses `Math.random()`; **not cryptographically secure**.
     * @internal
     */
    static hexId(length: number, typecase?: 'lower' | 'upper'): string;
    /**
     * Generate a pseudo-random alphanumeric identifier.
     *
     * @param length - Length (1–128).
     * @returns A string using `A-Za-z0-9`.
     *
     * @remarks
     * Uses `Math.random()`; **not cryptographically secure**.
     * @internal
     */
    static alphanumericId(length: number, typecase?: 'lower' | 'upper' | 'both'): string;
    /**
     * Generates a URL-safe base64-like string of the specified length.
     * No padding character is added.
     * @param length
     * @returns
     */
    static base64LikeId(length: number): string;
}
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