/**
 * Config is a bag of related configuration state.  Each bag contains any number of configuration variables, indexed by
 * simple keys, and each has a name that uniquely identifies it; two bags with different names do not share values for
 * variables that otherwise share the same key.  For example, a bag whose name is `pulumi:foo`, with keys `a`, `b`,
 * and `c`, is entirely separate from a bag whose name is `pulumi:bar` with the same simple key names.  Each key has a
 * fully qualified names, such as `pulumi:foo:a`, ..., and `pulumi:bar:a`, respectively.
 */
export declare class Config {
    /**
     * name is the configuration bag's logical name and uniquely identifies it.  The default is the name of the current
     * project.
     */
    readonly name: string;
    constructor(name: string);
    /**
     * get loads an optional configuration value by its key, or undefined if it doesn't exist.
     *
     * @param key The key to lookup.
     * @param opts An options bag to constrain legal values.
     */
    get(key: string): string | undefined;
    /**
     * fullKey turns a simple configuration key into a fully resolved one, by prepending the bag's name.
     *
     * @param key The key to lookup.
     */
    private fullKey;
}