jsmind/src/jsmind.common.js at 9dc19f195d0a61d42b13b01507a3ff7d3ba754c6 · hizzgdev/jsmind · GitHub

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/**
 * @license BSD
 * @copyright 2014-2025 hizzgdev@163.com
 *
 * Project Home:
 *   https://github.com/hizzgdev/jsmind/
 */

/**
 * Library version string.
 * @type {string}
 */
export const __version__ = '0.9.1';
/**
 * Library author.
 * @type {string}
 */
export const __author__ = 'hizzgdev@163.com';

if (typeof String.prototype.startsWith != 'function') {
    String.prototype.startsWith = function (p) {
        return this.slice(0, p.length) === p;
    };
}

/**
 * Direction constants and parser.
 * @typedef {{left:number,center:number,right:number,of:(dir:(string|number))=>number|undefined}} DirectionType
 */
/** @type {DirectionType} */
export const Direction = {
    left: -1,
    center: 0,
    right: 1,
    of: function (dir) {
        if (!dir || dir === -1 || dir === 0 || dir === 1) {
            return dir;
        }
        if (dir === '-1' || dir === '0' || dir === '1') {
            return parseInt(dir);
        }
        if (dir.toLowerCase() === 'left') {
            return this.left;
        }
        if (dir.toLowerCase() === 'right') {
            return this.right;
        }
        if (dir.toLowerCase() === 'center') {
            return this.center;
        }
    },
};
/** @enum {number} */
export const EventType = { show: 1, resize: 2, edit: 3, select: 4 };
/** @enum {number} */
export const Key = { meta: 1 << 13, ctrl: 1 << 12, alt: 1 << 11, shift: 1 << 10 };
/** @enum {number} */
export const LogLevel = { debug: 1, info: 2, warn: 3, error: 4, disable: 9 };

// an noop function define
var _noop = function () {};
/**
 * Logger facade with dynamic level.
 * @type {{level:(lvl:number)=>void,log:Function,debug:Function,info:Function,warn:Function,error:Function}}
 */
export let logger =
    typeof console === 'undefined'
        ? {
              level: _noop,
              log: _noop,
              debug: _noop,
              info: _noop,
              warn: _noop,
              error: _noop,
          }
        : {
              level: setup_logger_level,
              log: console.log,
              debug: console.debug,
              info: console.info,
              warn: console.warn,
              error: console.error,
          };

/**
 * Set logger level.
 * @param {number} log_level
 */
function setup_logger_level(log_level) {
    if (log_level > LogLevel.debug) {
        logger.debug = _noop;
    } else {
        logger.debug = console.debug;
    }
    if (log_level > LogLevel.info) {
        logger.info = _noop;
    } else {
        logger.info = console.info;
    }
    if (log_level > LogLevel.warn) {
        logger.warn = _noop;
    } else {
        logger.warn = console.warn;
    }
    if (log_level > LogLevel.error) {
        logger.error = _noop;
    } else {
        logger.error = console.error;
    }
}