blaze-2d/lib/src/logger.js

A fast and simple WebGL 2 2D game engine written in TypeScript

export default class Logger {
    /**
     * Logs a message.
     *
     * @param id The identifier of who is logging
     * @param args The args to log
     */
    static log(id, ...args) {
        const str = this.str(id, ...args);
        console.log(str);
        this.callListeners("log", str, id, args);
        return str;
    }
    static error(id, ...args) {
        const str = this.str(id, ...args);
        console.log("%c" + str, `color: ${this.errorColor}`);
        this.callListeners("error", str, id, args);
        return str;
    }
    static warn(id, ...args) {
        const str = this.str(id, ...args);
        console.log("%c" + str, `color: ${this.warnColor}`);
        this.callListeners("warning", str, id, args);
        return str;
    }
    /**
     * Constructs the string to be logged.
     *
     * @param id The identifier of who is logging
     * @param args The args to log
     */
    static str(id, ...args) {
        const str = args.join(" ");
        const date = new Date();
        const time = `${date.getHours().toString().padStart(2, "0")}:${date.getMinutes().toString().padStart(2, "0")}:${date
            .getSeconds()
            .toString()
            .padStart(2, "0")}`;
        return `[${time} ${id}]: ${str}`;
    }
    static callListeners(type, str, id, args) {
        for (const cb of this.listeners) {
            cb(type, str, id, args);
        }
    }
    /**
     * Adds a callback which will be called whenever a message is logged.
     *
     * @param callback The listener's callback
     */
    static addListener(callback) {
        this.listeners.push(callback);
    }
    /**
     * Removes a listener from the logger.
     *
     * @param callback The listener to remove
     */
    static removeListener(callback) {
        const index = this.listeners.findIndex((cb) => cb === callback);
        if (index === -1)
            return;
        this.listeners.splice(index, 1);
    }
}
Logger.errorColor = "#dc3545";
Logger.successColor = "#28a745";
Logger.warnColor = "#ffc107";
Logger.listeners = [];
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