tty-aware-progress/lib/index.js

[](https://travis-ci.org/bkniffler/tty-aware-progress)

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const progress_1 = __importDefault(require("progress"));
function createProgress(total, { stream = process.stderr } = {}) {
    if (process.stderr.isTTY) {
        const progress = new progress_1.default(`[:bar] :current/:total :percent :rate/s :etas `, {
            total,
            stream
        });
        return (numberOfTick = 1) => progress.tick(numberOfTick);
    }
    else {
        let current = 0;
        let percent = 0;
        let start = +new Date();
        return (numberOfTick = 1) => {
            current += numberOfTick;
            const ratio = Math.min(Math.max(current / total, 0), 1);
            const value = Math.floor(ratio * 100);
            if (value !== percent) {
                percent = value;
                const elapsed = +new Date() - start;
                const eta = percent === 100 ? 0 : elapsed * (total / current - 1);
                const rate = current / (elapsed / 1000);
                stream.write(`    ${percent}% ${Math.round(rate)}/s ${isNaN(eta) || !isFinite(eta) ? '0.0' : (eta / 1000).toFixed(1)}s`);
            }
        };
    }
}
exports.default = createProgress;