import * as ts from 'typescript'; export declare function findEnvironmentExpression(source: ts.SourceFile): ts.ObjectLiteralExpression | undefined; export declare function getAssignedPropertyFromObjectliteral(expression: ts.ObjectLiteralExpression, variableSelector: string[]): string | undefined; export declare function isBooleanStringOrNumberLiteral(node: ts.Node): node is ts.StringLiteral | ts.NumericLiteral | ts.BooleanLiteral; export declare function removeEmptyElementsFromArrayLiteral(array: ts.ArrayLiteralExpression): ts.ArrayLiteralExpression;