import ts from 'typescript';
/**
 * Create a forward ref using an arrow function (() => ...). This is useful when
 * the expression in the forward ref does not depend on this.
 * @param expr
 * @returns
 */
export declare function forwardRef(expr: ts.Expression): ts.ArrowFunction;
/**
 * Create a forward ref using a function expression (function() { ... }). This is useful
 * when the expression in the forward ref depends on 'this'
 * @param expr
 * @returns
 */
export declare function functionForwardRef(expr: ts.Expression): ts.FunctionExpression;
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