@zerodep/string-padleft

A utility to prefix a value with a specified character to create a string of a specific length. Non-string values will cause a ZeroDepError to be thrown.

Full documentation is available at the zerodep.app page.

Signature

declare const stringPadLeft: (value: string | number | bigint, size: number, char?: string) => string;

Function Parameters

The stringPadLeft function has the following parameters:

• value - the value to modify
• size - the target size of the string
• char - optional character/string to pad with, default is a space character

Examples

All @zerodep packages support both ESM and CJS formats, each complete with Typescript typings.

// ESM
import { stringPadLeft } from '@zerodep/string-padleft';

// CJS
const { stringPadLeft } = require('@zerodep/string-padleft');

// with the default separator (a space character)
stringPadLeft('abc', 10); // "       abc"
stringPadLeft(123, 10); // "       123"
stringPadLeft(456n, 10); // "       456"

// with a custom separator
stringPadLeft('bc', 5, 'a'); // "aaabc"
stringPadLeft(123, 6, '0'); // "000123"
stringPadLeft(456n, 7, '_'); // "____456"

// when the value exceeds the requested size the full value is returned (non-destructive)
stringPadLeft('abcdefghij', 5, 'x'); // "abcdefghij"

// with anything that is not a string
stringPadLeft({ a: 'not string' }); // throws ZeroDepError: Value is not a string

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ZeroDep Advantages

• Zero npm dependencies - completely eliminates all risk of supply-chain attacks, decreases node_modules folder size
• ESM & CJS - has both ecmascript modules and common javascript exports
• Tree Shakable - built to be fully tree shakable ensuring your packages are the smallest possible size
• Fully typed - typescript definitions are provided for every package for a better developer experience
• Semantically named - package and method names are easy to grok, remember, use, and read
• Documented - actually useful documentation with examples at zerodep.app
• Intelligently Packaged - multiple npm packages of different sizes available allowing a menu or a-la-carte composition of capabilities
• 100% Tested - all methods and packages are fully unit tested
• Predictably Versioned - semantically versioned for peace-of-mind upgrading, this includes changelogs
• MIT Licensed - permissively licensed for maximum usability