So siehts ganz gut aus !

node_modules/constantinople/lib/index.d.ts

@@ -0,0 +1,19 @@
+import { BabylonOptions } from 'babylon';
+import * as b from 'babel-types';
+export { BabylonOptions };
+export interface ExpressionToConstantOptions {
+    constants?: any;
+}
+export interface Options extends ExpressionToConstantOptions {
+    babylon?: BabylonOptions;
+}
+export declare function expressionToConstant(expression: b.Expression, options?: ExpressionToConstantOptions): {
+    constant: true;
+    result: any;
+} | {
+    constant: false;
+    result?: void;
+};
+export declare function isConstant(src: string, constants?: any, options?: BabylonOptions): boolean;
+export declare function toConstant(src: string, constants?: any, options?: BabylonOptions): any;
+export default isConstant;