unitime

Unitime - Simplified time units

Unitime is a lightweight JavaScript utility module which provides powerful, human-readable functions for converting various time units. The project was inspired by Java's TimeUnit by Doug Lea.

Human-readable, yet concise

const { h, ms } = require("unitime");
 
h`720`.days();  // evaluates to 7
ms`3`.nanos();  // evaluates to 3000000

Installation

npm install unitime

Description

Unitime provides lightweight methods for converting between different units of time with a human-readable syntax. The idea is reducing the mental load caused by interpreting complex time declarations like 24*60*60*1000 or 86400000 which both describe the number of milliseconds in a single day. Using this library you can simply write d(1), or d`1` if you prefer template literals.

Time formats that are currently supported are:

• Nanoseconds (ns)
• Microseconds (us)
• Milliseconds (ms)
• Seconds (s)
• Minutes (min)
• Hours (h)
• Days (d)

You can specify the target format on initialization to make the code even more concise. This is especially useful when writing configuration files in JavaScript:

const { d, h } = require("unitime").to("ms")
 
const config = {
    duration: d`7`, // evaluates to 604800000
    interval: h`12` // evaluates to 43200000
}

The library is written entirely in Typescript.

Usage examples

Convert to a predefined time unit

You can predefine the target unit by using .to(unit) when initializing:

const { ns, s } = require("unitime").to("ms")
 
ns`100`; // 0.0001
s(1000); // 1000000

Convert to any time unit

You can also individually decide the target unit for each variable:

const { ns, s } = require("unitime")
 
ns`100`.millis(); // 0.0001
s(100).minutes(); // 1.6666666666666667

License

This work by Jonatan Hamberg is licensed under the MIT License.