/**
 * Interpolate {expression} in template strings
 *
 * @param template - Template string with {expr} placeholders
 * @param scope - Scope object for evaluation
 * @returns Interpolated string
 *
 * @example
 * interpolate('Hello {name}!', { name: 'World' }) // 'Hello World!'
 */
export declare function interpolate(template: string, scope: any): string;
/**
 * Evaluate expression with optional pipe support
 *
 * @param expr - Expression to evaluate
 * @param scope - Scope object
 * @param allowPipes - Whether to process pipes (default: true)
 * @returns Evaluated value
 *
 * @example
 * evaluateExpression('name | uppercase', scope) // 'JOHN'
 * evaluateExpression('count > 5', scope, false) // true
 */
export declare function evaluateExpression(expr: string, scope: any, allowPipes?: boolean): any;
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