import ts from 'typescript';
/**
 * Tracks updates to a ts.SourceFile as text changes.
 * This is useful to preserve as much of the original whitespace in the source
 * file as possible. Re-printing the entire file causes blank lines to be lost.
 *
 * See: https://github.com/microsoft/TypeScript/issues/843
 */
declare class UpdateTracker {
    private sourceFile;
    private updates;
    private printer;
    constructor(sourceFile: ts.SourceFile);
    private insert;
    /**
     * Adds a return type annotation to a function.
     * replaceNode would require reprinting the entire function body, losing all whitespace details.
     */
    addReturnAnnotation(node: ts.SignatureDeclaration, type: ts.TypeNode): void;
    insertNodes<T extends ts.Node>(pos: number, nodes: ts.NodeArray<T>): void;
    private replace;
    replaceNode(oldNode: ts.Node | undefined, newNode: ts.Node | undefined): void;
    replaceNodes<T extends ts.Node>(oldNodes: ts.NodeArray<T>, newNodes: ts.NodeArray<T>, addParens?: boolean): void;
    /**
     * Returns the result of applying all tracked changes to the source file.
     */
    apply(): string;
}
export default UpdateTracker;