import type { default as ServiceScope } from '../serviceScope/ServiceScope';
import type ILogHandler from './ILogHandler';
/**
 * A basic redirectable logging system.
 *
 * @remarks
 * The Log class provides static methods for logging messages at different levels (verbose,
 * info, warning, error) and with context information. Context information helps identify
 * which component generated the messages and allows for filtering of log events.  In a
 * SharePoint Framework application, these messages will appear on the developer dashboard.
 *
 * @public
 */
export default class Log {
    private static _logHandler;
    /**
     * Configures the logger with a different target.
     *
     * @internal
     */
    static _initialize(logHandler: ILogHandler): void;
    /**
     * Logs a message which contains detailed information that is generally only needed for
     * troubleshooting.
     * @param   source - the source from where the message is logged, e.g., the class name.
     *          The source provides context information for the logged message.
     *          If the source's length is more than 20, only the first 20 characters are kept.
     * @param   message - the message to be logged
     *          If the message's length is more than 100, only the first 100 characters are kept.
     * @param   scope - the service scope that the source uses. A service scope can provide
     *         more context information (e.g., web part information) to the logged message.
     */
    static verbose(source: string, message: string, scope?: ServiceScope): void;
    /**
     * Logs a general informational message.
     * @param   source - the source from where the message is logged, e.g., the class name.
     *          The source provides context information for the logged message.
     *          If the source's length is more than 20, only the first 20 characters are kept.
     * @param   message - the message to be logged
     *          If the message's length is more than 100, only the first 100 characters are kept.
     * @param   scope - the service scope that the source uses. A service scope can provide
     *         more context information (e.g., web part information) to the logged message.
     */
    static info(source: string, message: string, scope?: ServiceScope): void;
    /**
     * Logs a warning.
     * @param   source - the source from where the message is logged, e.g., the class name.
     *          The source provides context information for the logged message.
     *          If the source's length is more than 20, only the first 20 characters are kept.
     * @param   message - the message to be logged
     *          If the message's length is more than 100, only the first 100 characters are kept.
     * @param   scope - the service scope that the source uses. A service scope can provide
     *         more context information (e.g., web part information) to the logged message.
     */
    static warn(source: string, message: string, scope?: ServiceScope): void;
    /**
     * Logs an error.
     * @param   source - the source from where the error is logged, e.g., the class name.
     *          The source provides context information for the logged error.
     *          If the source's length is more than 20, only the first 20 characters are kept.
     * @param   error - the error to be logged
     * @param   scope - the service scope that the source uses. A service scope can provide
     *         more context information (e.g., web part information) to the logged error.
     */
    static error(source: string, error: Error, scope?: ServiceScope): void;
}
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