/**
 * Draw a line chart showing score evolution across reviews
 * @param {string} canvasId
 * @param {Array<{timestamp: string, score: number|null, type?: string}>} reviews
 */
export function drawScoreTrendChart(canvasId: string, reviews: Array<{
    timestamp: string;
    score: number | null;
    type?: string;
}>): void;
/**
 * Draw a bar chart showing number of reviews per week
 * @param {string} canvasId
 * @param {Array<{timestamp: string}>} reviews
 */
export function drawReviewActivityChart(canvasId: string, reviews: Array<{
    timestamp: string;
}>): void;
/**
 * Draw a horizontal bar chart showing score distribution
 * @param {string} canvasId
 * @param {Array<{score: number|null}>} reviews
 */
export function drawScoreDistributionChart(canvasId: string, reviews: Array<{
    score: number | null;
}>): void;
/**
 * Animate a counter from 0 to targetValue
 * @param {HTMLElement} element
 * @param {number} targetValue
 * @param {number} duration
 * @param {string} [suffix]
 */
export function animateCounter(element: HTMLElement, targetValue: number, duration: number, suffix?: string): void;
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