import ts from 'typescript';
/**
 * Finds the return statement in the body of a function
 *
 * @param node - The function body node
 * @returns The return statement if found, otherwise undefined
 */
export declare function getReturnStatement(node: ts.Block | undefined): ts.ReturnStatement | undefined;
/**
 * Checks whether the node is an arrow function
 *
 * For example:
 *
 * const foo = () => {...}
 *
 * @param node - The node to check
 * @returns True if the node is an arrow function
 */
export declare function isArrowFunction(node: ts.Node | undefined): node is ts.ArrowFunction;
/**
 * Checks whether the node is a function expression.
 *
 * For example:
 *
 * const foo = function() { ... }
 *
 * @param node - The node to check
 * @returns True if the node is a function expression
 */
export declare function isFunctionExpression(node: ts.Node | undefined): node is ts.FunctionExpression;
/**
 * Checks if the node is a function like
 *
 * For example:
 *
 * function name(...) { ... }
 * const name = (...) => { ... }
 * const name = function(...) { ... }
 *
 * @param node - The node to check
 * @returns True if the node is a function like node
 */
export declare function isFunctionDeclaration(node: ts.Node): node is ts.FunctionDeclaration | ts.VariableStatement;
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