d2/src/logger/Logger.js

Javascript library for DHIS2

import { checkType, isType } from '../lib/check'

class Logger {
    constructor(logging) {
        checkType(logging, 'object', 'console')
        this.logger = logging
    }

    canLog(type) {
        return !!(type && console && isType(this.logger[type], 'function'))
    }

    logMessage(type = 'log', ...rest) {
        if (this.canLog(type) && this.logger[type]) {
            this.logger[type](...rest)
            return true
        }
        return false
    }

    debug(...rest) {
        return this.logMessage('debug', ...rest)
    }

    error(...rest) {
        return this.logMessage('error', ...rest)
    }

    log(...rest) {
        return this.logMessage('log', ...rest)
    }

    warn(...rest) {
        return this.logMessage('warn', ...rest)
    }

    static getLogger() {
        let logger

        // TODO: This is not very clean try to figure out a better way to do this.
        try {
            // Node version
            logger = global.console
        } catch (e) {
            // Browser version fallback
            /* istanbul ignore next */
            logger = window.console
        }

        if (this.logger) {
            return this.logger
        }
        return (this.logger = new Logger(logger))
    }
}

export default Logger