import TypeScript from 'typescript';
export default class CodeOptimizerTransformer implements TypeScript.CustomTransformer {
    private context;
    constructor(context: TypeScript.TransformationContext);
    transformSourceFile(sourceFile: TypeScript.SourceFile): TypeScript.SourceFile;
    transformBundle(node: TypeScript.Bundle): TypeScript.Bundle;
    private reduceUseStrict;
    private reduceEmptyFunctions;
    private reduceBinaryExpressions;
    private reduceIfStatements;
    private isExpressionFalsy;
    private isExpressionTruthy;
    private isExpressionStaticallyTruthy;
    private isExpressionStaticallyFalsy;
}