Custom NPM Package installing issue - vue.js

Question

I made a custom npm package which I'm trying to install in my Vue application. I tried to follow some tutorials and steps but I'm getting an error below:
This dependency was not found:
chatinterfaceui in ./src/main.js
To install it, you can run: npm install --save chatinterfaceui
My main.js file in my chatinterfaceui lib is:
import ChatUi from './ChatUi.vue'
export default {
install (Vue, options) {
if (!options || !options.store) {
throw new Error('Please initialise plugin.');
}
Vue.component('chat-ui', ChatUi);
}
}
The package.json file for the chatinterfaceui lib:
{
"name": "chatinterfaceui",
"version": "0.1.0",
"private": false,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"build-bundle": "vue-cli-service build --target lib --name chatinterfaceui ./src/ChatUi.vue",
"lint": "vue-cli-service lint"
},
"main": "./dist/chatinterfaceui.common.js",
"dependencies": {
"autolinker": "^3.14.1",
"core-js": "^3.6.4",
"emoji-js": "^3.5.0",
"escape-goat": "^3.0.0",
"msgdown": "^1.0.2",
"node-sass": "^4.14.1",
"sass-loader": "^8.0.2",
"vue": "^2.6.11"
},
"devDependencies": {
"#vue/cli-plugin-babel": "~4.3.0",
"#vue/cli-plugin-eslint": "~4.3.0",
"#vue/cli-service": "~4.3.0",
"babel-eslint": "^10.1.0",
"eslint": "^6.7.2",
"eslint-plugin-vue": "^6.2.2",
"vue-template-compiler": "^2.6.11"
},
"eslintConfig": {
"root": true,
"env": {
"node": true
},
"extends": [
"plugin:vue/essential",
"eslint:recommended"
],
"parserOptions": {
"parser": "babel-eslint"
},
"rules": {
"vue/no-unused-vars": "off"
}
},
"browserslist": [
"> 1%",
"last 2 versions",
"not dead"
]
}
My main.js file for the Vue application is:
import Vue from 'vue'
import App from './App.vue'
import ChatUi from 'chatinterfaceui'
Vue.use(ChatUi)
Vue.config.productionTip = false
new Vue({
render: h => h(App),
}).$mount('#app')
My package.js is:
{
"name": "frontend",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"axios": "^0.19.2",
"chatinterfaceui": "^0.1.0",
"core-js": "^3.6.4",
"dialogflow": "^1.2.0",
"uuid": "^8.0.0",
"vue": "^2.6.11",
"vue-beautiful-chat": "^2.3.1"
},
"devDependencies": {
"#vue/cli-plugin-babel": "~4.3.0",
"#vue/cli-plugin-eslint": "~4.3.0",
"#vue/cli-service": "~4.3.0",
"babel-eslint": "^10.1.0",
"eslint": "^6.7.2",
"eslint-plugin-vue": "^6.2.2",
"node-sass": "^4.14.0",
"sass-loader": "^8.0.2",
"vue-template-compiler": "^2.6.11"
},
"eslintConfig": {
"root": true,
"env": {
"node": true
},
"extends": [
"plugin:vue/essential",
"eslint:recommended"
],
"parserOptions": {
"parser": "babel-eslint"
},
"rules": {}
},
"browserslist": [
"> 1%",
"last 2 versions",
"not dead"
]
}
In my main Vue application in which I want to use my library, when I try to use the library, I'm getting the warning. I feel I'm doing something silly, but can't understand or find what.