import TypeScript from 'typescript';
export default class NodeEnvTransformer implements TypeScript.CustomTransformer {
    private context;
    constructor(context: TypeScript.TransformationContext);
    transformSourceFile(sourceFile: TypeScript.SourceFile): TypeScript.SourceFile;
    transformBundle(node: TypeScript.Bundle): TypeScript.Bundle;
    private replaceNodeEnv;
    private replaceGlobal;
    private replaceNodeProcess;
    private withBuffer;
    private isIdentifierDeclared;
    private isIdentifierUsed;
}