Uncode String Formatter

Can be used standalone, though this library was developed to add missing functionality into the Uncode platform.

This library provides the ability to format strings in the same way as String.Format in .NET.

Basic usage:

const stringFormat = require("string-format-uncode");

process.env.LANG = 'en_GB';

console.log(
	[
		// general
			// positional arguments - The first value is: The
			stringFormat("{0} {1}: {0}", "The", "first value is"),
			// left padded alignment -     padded
			stringFormat("{0,-10}", "padded"),
			// right padded alignment - world     hello
			stringFormat("{0,10}hello", "world"),

		// numbers
			// currency, supports decimal places {0:c4} - £3.14
			stringFormat("{0:c}", 3.14),
			// fixed point, defaults to 6 places if no arg given - 1.2346
			stringFormat("{0:f4}", 1.23456),
			// zero padded number - 0012
			stringFormat("{0:d4}", 12),
			// exponential - -1.05e+003
			stringFormat("{0:e2}", -1052.0329112756),
			// general number format - 123.5
			stringFormat("{0:G4}", 123.4546),
			// human natural - 1,234,567,890.00
			stringFormat("{0:N}", 1234567890),
			// percentage - 12%
			stringFormat("{0:P}", 0.12),
			// round trip number - 1.23
			stringFormat("{0:R}", 1.23),
			// hexadecimal - 00ff
			stringFormat("{0:x4}", 255),

		// dates/times
			// short date format - 20/01/2020 UK, 1/20/2020 USA
			stringFormat("{0:d}", new Date()),
			// long date format - Wednesday, January 1, 2020
			stringFormat("{0:D}", new Date()),
			// full date short time - Wednesday, January 1, 2020 1:34 PM
			stringFormat("{0:f}", new Date()),
			// full date long time - Wednesday, January 1, 20202 1:34:45 PM
			stringFormat("{0:F}", new Date()),
			// year month - January 2020
			stringFormat("{0:Y}", new Date()),
			// day month - January 1
			stringFormat("{0:M}", new Date()),
			// universal sortable - 01-01-2020 13:34:45Z
			stringFormat("{0:u}", new Date()),
			// short time - 1:34 PM
			stringFormat("{0:t}", new Date()),
			// long time - 1:34:45 PM
			stringFormat("{0:T}", new Date()),
			// RFC1123 - Wed, 1 Jan 2020 13:34:45
			stringFormat("{0:R}", new Date()),
			// round trip
			stringFormat("{0:O}", new Date()),
			// general short time - 20/01/2020 1:34 PM
			stringFormat("{0:g}", new Date()),
			// general long time - 20/01/2020 1:34:45 PM
			stringFormat("{0:G}", new Date()),
	].join("\n")
);