1234567891011121314151617181920212223
import { encode } from "./deps.ts";const { noColor } = Deno;
const START = noColor ? "" : "\u001b[999D";const END = noColor ? "\n" : "";
export class Progress {  n: number;  w: Deno.Writer;  step: number = 0;
  constructor(n: number, w: Deno.Writer = Deno.stdout) {    this.n = n;    this.w = w;  }  async log(msg: string) {    // we assume that msg doesn't contain \n    const line = `${START}[${this.step + 1}/${this.n}] ${msg}${END}`;    const b = encode(line);    await this.w.write(b);  }}