# es-leftpad

A Node 4.x compatible ES2015 alternative to [left-pad](https://www.npmjs.com/package/left-pad)

## Install

```bash
$ npm install es-leftpad
```


## Usage

```js
leftpad = require('es-leftpad')

leftpad('foo', 5)
// => "  foo"

leftpad('foobar', 6)
// => "foobar"

leftpad(1, 2, 0)
// => "01"
```

## Benchmark

Performance compared to `left-pad` using [benchmark.js](https://github.com/bestiejs/benchmark.js)

- Padding to 80 chars:
```
leftPad x 1,420,504 ops/sec ±0.45% (92 runs sampled)
es-leftPad x 4,607,534 ops/sec ±1.31% (91 runs sampled)
Padding to 8 ("999", 80, "0")): Fastest is es-leftPad
```

- Padding to 40 chars:
```
leftPad x 2,602,721 ops/sec ±0.94% (89 runs sampled)
es-leftPad x 5,120,414 ops/sec ±0.58% (93 runs sampled)
Padding to 8 ("999", 40, "0")): Fastest is es-leftPad
```

- Padding to 12 chars:
```
leftPad x 6,310,671 ops/sec ±0.53% (92 runs sampled)
es-leftPad x 5,318,553 ops/sec ±0.72% (92 runs sampled)
Padding to 12 (999, 12)): Fastest is leftPad
```


## Tests

Passing all tests from [left-pad/test.js](https://github.com/camwest/left-pad/blob/master/test.js)

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es-leftpad

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(Experimental) An ambiguous license classifier was found.

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Bad semver

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Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

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Bidirectional unicode control characters

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Bin script confusion

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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Compromised SSH key

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Title

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High CVE

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Debug access

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Deprecated

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

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Dynamic require

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Empty package

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File dependency

Accesses the file system, and could potentially read sensitive data.

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Filesystem access

Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

What are wildcard dependencies?

Wildcard dependency

Contains a dependency which resolves to a remote git URL. Dependencies fetched from git URLs are not immutable and can be used to inject untrusted code or reduce the likelihood of a reproducible install.

What are git dependencies?

Git dependency

Contains a dependency which resolves to a GitHub URL. Dependencies fetched from GitHub specifiers are not immutable can be used to inject untrusted code or reduce the likelihood of a reproducible install.

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GitHub dependency

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AI-detected potential malware

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AI-detected potential security risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

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Native code

Contains high entropy strings. This could be a sign of encrypted data, leaked secrets or obfuscated code.

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High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

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Unicode homoglyphs

Contains a dependency which resolves to a remote HTTP URL which could be used to inject untrusted code and reduce overall package reliability.

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HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

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Install scripts

Package has an invalid manifest file and can cause installation problems if you try to use it.

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Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

What are invisible characters?

Invisible chars

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License change

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License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

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License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

What's wrong with long strings?

Long strings

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

What is a major refactor?

Major refactor

This package is malware. We have asked the package registry to remove it.

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Known malware

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Manifest confusion

Contains a medium severity Common Vulnerability and Exposure (CVE).

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Medium CVE

Contains a low severity Common Vulnerability and Exposure (CVE).

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Low CVE

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

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(Experimental) A package's licensing information has fine-grained problems.

Misc. License Issues

The package was published by an npm account that no longer exists.

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Modified license exception

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Modified license

What is network access?

Network access

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

What is new author?

New author

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Why is contributor and author data important?

No contributors or author data

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No bug tracker

(Experimental) License information could not be found.

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No repository

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No tests

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es-leftpad

es-leftpad

Install

Usage

Benchmark

Tests

Keywords

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es-leftpad

es-leftpad

Install

Usage

Benchmark

Tests

Keywords

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