string-width

What it is

string-width is a utility that calculates the number of columns required to display a string, which is essential for aligning and formatting text in various applications. It supports Unicode characters, making it useful for internationalized software.

string-width stands out as a lightweight, dependency-free library for calculating string width, making it ideal for developers who need precise control over text formatting in their projects.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Limited functionality for complex text formatting

   string-width only calculates the width of strings and does not handle more complex text formatting or alignment tasks.

2. 02

   No built-in support for right-to-left languages

   The tool primarily supports left-to-right text, which may lead to incorrect width calculations for right-to-left languages like Arabic and Hebrew without additional custom handling.

3. 03

   Does not account for font metrics or rendering differences

   string-width calculates the number of columns based on character widths but does not consider how different fonts might render these characters, which can lead to discrepancies in actual display width.

4. 04

   Does not handle combining characters well

   The tool may struggle with Unicode combining characters that modify the preceding character, potentially leading to inaccurate width calculations for such text.

What it does well

• Supports Unicode characters for accurate width calculation.

• Lightweight and easy to integrate into projects.

• No external dependencies, making it simple to use.

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.