progress-estimator

Logs a progress bar and estimation for how long a Promise will take to complete. This library tracks previous durations in order to provide more accurate estimates over time.

!Demo

$3

Installation

``shell


use npm

npm install progress-estimator

use yarn

yarn add progress-estimator
`

Usage example

`js
const createLogger = require('progress-estimator');
const { join } = require('path');

// All configuration keys are optional, but it's recommended to specify a storage location.
// Learn more about configuration options below.
const logger = createLogger({
storagePath: join(__dirname, '.progress-estimator'),
});

async function run() {
await logger(promiseOne, "This is a promise");
await logger(
promiseTwo,
"This is another promise. I think it will take about 1 second",
{
estimate: 1000
}
);
}
`


API

$3

This method is the default package export. It creates and configures a logger function (documented below). The following configuration options are supported. (They apply only to the logger instance that's returned.)

| name | type | Description |
| --- | --- | --- |
| logFunction | Function | Custom logging function. Defaults to log-update. Must define .done() and .clear() methods. |
| spinner | object | Which spinner from the cli-spinners package to use. Defaults to dots. |
| storagePath | string | Where to record durations between runs. Defaults to os.tmpdir(). |
| theme | object | Custom chalk theme. Look to the default theme for a list of required keys. |

$3

This method logs a progress bar and estimated duration for a promise. It requires at least two parameters– a Promise and a label (e.g. "Running tests"). The label is SHA1 hashed in order to uniquely identify the promise.

An optional third parameter can be provided as well with the following keys:

| name | type | Description |
| --- | --- | --- |
| estimate | Number | Estimated duration of promise. (This value is used initially, until a history of actual durations have been recorded.) |
| id` | String | Uniquely identifies the promise. This value is needed if the label string is not guaranteed to be unique. |