scai/dist/lib/spinner.js

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export class Spinner {
    constructor(message) {
        this.frames = ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏'];
        this.interval = null;
        this.i = 0;
        if (message) {
            this.text = message;
        }
    }
    start() {
        process.stdout.write('\x1b[?25l'); // hide cursor
        if (this.text) {
            process.stdout.write(` ${this.text}`);
        }
        this.interval = setInterval(() => {
            const text = this.text ?? '';
            process.stdout.write('\r');
            process.stdout.write(`${this.frames[this.i]} ${text}`);
            this.i = (this.i + 1) % this.frames.length;
        }, 80);
    }
    update(text) {
        this.text = text;
    }
    succeed(msg) {
        this.stop();
        process.stdout.write('\r'); // go to start
        if (msg) {
            console.log(`✅ ${msg}`);
        }
    }
    fail(msg) {
        this.stop();
        process.stdout.write('\r'); // go to start
        console.log(`❌ ${msg}`);
    }
    stop() {
        if (this.interval) {
            clearInterval(this.interval);
            this.interval = null;
        }
        process.stdout.write('\x1b[?25h'); // show cursor
    }
}