Toolbox.ts

class Toolbox {
    private static _instance: Toolbox;

    private constructor() { }

    public static get instance(): Toolbox {
        if ( !Toolbox._instance ) {
            Toolbox._instance = new Toolbox();
        }

        return Toolbox._instance;
    }

    public randomString(length: number) {
        let result = '';
        let characters = 'abcdefghjklmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789';
        let charactersLength = characters.length;
        for ( let i = 0 ; i < length ; i++ ) {
            result += characters.charAt(Math.floor(Math.random() * charactersLength));
        }
        return result;
    }

    public capitalizingFirstLetter(word: string): string {
        return word.charAt(0).toUpperCase() + word.slice(1);
    }

    public capitalizeName(name: string) {
        return name.trim().replace(/(?:^|\s|-)\S/g, s => s.toUpperCase());
    }

    public formatHour(hour: string): string {
        let hourElements = hour.split(':');

        return hourElements[0] + 'h' + hourElements[1];
    }

    public async sleep(ms: number) {
        await new Promise(r => setTimeout(r, ms));
    }
}


export default Toolbox.instance;