dependency-exists

Checks if an npm package exists in package.json dependencies. You can also provide a nice terminal message which can be customized as you like.

You can select where to search the npm package in package.json dependencies (by default is all of them):

• dependencies
• devDependencies
• peerDependencies

---

Table of contents

• Installation 🦾
• How to Use? 💻
• Developer Support 🔗
• Support my work ❤️

---

Installation

• Via yarn:

yarn add -D dependency-exists

• Via npm:

npm install dependency-exists --save-dev

How to use?

API

Method	Usage
dependencyExists()	Еasy to use a method that will return a boolean value if npm package exists in package.json dependecies. Option to select specific dependecies scheck.
dependencyExistsWithText()	Will return a boolean value if the npm package exists. Also will provide a nice terminal message which can be customized as you like.

---

1. dependencyExists()

Properties	Desrciption	Type
packageName	npm package name	string
dependenciesConfig?	Search in specific dependencies in package.json	DependenciesConfig

interface DependenciesConfig {
  dependencies: boolean;
  devDependencies: boolean;
  peerDependencies: boolean;
}

function dependencyExists(packageName: string, dependenciesConfig: DependenciesConfig = {
        dependencies: true,
        devDependencies: true,
        peerDependencies: true
    }): boolean;

• Default: By default accepts a string and returns a boolean value. Search in all pakage.json file dependencies:
  • dependencies
  • devDependencies
  • peerDependencies

import { dependencyExists } from "@kv/dependency-exists";

if (dependencyExists("some-npm-package-name")) {
  //=> true
} else {
  //=> false
}

• With dependenciesConfig If you want to search for specific npm package in specific dependency, you can provide config:

  import { dependencyExists } from "@kv/dependency-exists";
  
  if (
    dependencyExists("some-npm-package-name", {
      dependencies: false,
      devDependencies: true, // Will search only in devDependencies
      peerDependencies: false,
    })
  ) {
    //=> true if the package exists in devDependecies
  } else {
    //=> false if the package NOT exists in devDependecies
  }

---

2. dependencyExistsWithText() method

function DependencyExistsWithTextOptions(packageName: string, options: DependencyExistsWithTextOptions): boolean;

• Info: Easy to use fully customizable method for checking if the npm package exists. Coming with default terminal response. The message in the console (color, text ) can be changed to whatever value you want.

Properties	Desrciption	Type
packageName	npm package name	string
options	Custamizable terminal response.	DependencyExistsWithTextOptions

export enum DefaultColorsEnum {
    success = "#008000",
    error = "#DC143C",
    warn = "#FFD700",
    info = "#00FFFF",
}

export interface DependencyExistsWithTextOptions {
    success: DependencyExistsWithTextOption;
    error: DependencyExistsWithTextOption;
}

interface DependencyExistsWithTextOption {
    color?: string | DefaultColorsEnum.success | DefaultColorsEnum.error | DefaultColorsEnum.info | DefaultColorsEnum.warn,
    text: string,
    warn?: TextOptionsStructure;
    info?: TextOptionsStructure;
}

interface TextOptionsStructure {
    color?: string | DefaultColorsEnum.success | DefaultColorsEnum.error | DefaultColorsEnum.info | DefaultColorsEnum.warn;
    text?: string;
}

// Example options types

 success: {
   text: "string",
   color?: "string",
    warn?: {
      color?: "string",
      text?: "string",
    },
    info?: {
      color?: "string",
      text?: "string",
    },
  },
  error: {
   text: "string",
   color?: "string",
    warn?: {
      color?: "string",
      text?: "string",
    },
    info?: {
      color?: "string",
      text?: "string",
    },

import { dependencyExistsWithText } from "@kv/dependency-exists";

dependencyExistsWithText("some-npm-package-name", {
  success: {
    color: "#ffffff", // string of terminal emulators supported hex color
    text: "npm package exists!", // string
    warn: {
      color: "#DEADED", // string of terminal emulators supported hex color
      text: "Some exists warning text.", // string
    },
    info: {
      color: "#00cafc", // string of terminal emulators supported hex color
      text: "Some exists info text!", // string
    },
  },
  error: {
    color: "#ffffff", // string of terminal emulators supported hex color
    text: "Example text: npm package NOT exist!", // string
    warn: {
      color: "#DEADED", // string of terminal emulators supported hex color
      text: "Some exists warning text.", // string
    },
    info: {
      color: "#00cafc", // string of terminal emulators supported hex color
      text: "Some exists info text!", // string
    },
  },
});

Examples:

Developer Support:

• If you saw some issue/bug 🐛 related to the specific release version.
• If you want some new feature or change to be added/implemented. 😊

Please, contact the creator of the replace-styles, so he will be able to fix or improve it:

Kristiyan Velkov

Email: [e-mail]

Support my work

If you like my work and want to support me to work hard, please donate via:

Revolut	Buy me a coffee
Revolute

Thanks a bunch for supporting me! It means a LOT 😍

---

Copyright ©️2023. All rights reserved.