start shift to making bare bash obsolete

dist/npmci.bash.d.ts

@@ -1,3 +1,4 @@
 import "typings-global";
+export declare let nvmAvailable: boolean;
 export declare let bash: (commandArg: string, retryArg?: number, bareArg?: boolean) => string;
 export declare let bashBare: (commandArg: any, retryArg?: number) => string;