Once i create and use own module then it will gives error like: Unable to resolve module - react-native

Question

I am new in react-native and I have, for the first time, created my own module(npm).
I have tried to create my own module(npm) for common components and individually it works fine. However once I install, link it in our app, and try to use those components, it gives an error like this:
Unable to resolve module `<Module-name>` from `<file>`: Module `<Module-name>` does not exist in the Haste module map.
(Note: I have tested using Android Emulator only)
I have followed the below steps for module and test app creation
For Module
react-native init <module-name>
Add simple code of component in main index.js
And set pacakge.json like this:
{
"name": "<module-name>",
"version": "0.0.1",
"private": true,
"main": "index.js",
"scripts": {
"start": "react-native start",
"test": "jest",
"lint": "eslint .",
"build": "echo 'build script executed'"
},
"dependencies": {
"react": "16.8.6",
"react-native": "0.60.4"
},
Now I check this component (react-native run-android), it will work fine.
Now I have tried to use in an app with the below steps
For Test App
Create new fresh app (react-native init <app-name>)
Install created npm with full path like;
npm install <full path of component>
Now I try react-native link <full path of component>, I have also tried simple react-native link, but nothing happens.
Now I run app using react-native run-android, however every time it gives the same error like;
Unable to resolve module <created-module name>
test app package.json
{
"name": "<app-name>",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "react-native start",
"test": "jest",
"lint": "eslint ."
},
"dependencies": {
"react": "16.8.6",
"react-native": "0.60.4",
"react-native-my-library": "^1.0.2",
"<created-module-name>": "file:../<created-module-name>"
},
"devDependencies": {
"#babel/core": "7.5.5",
"#babel/runtime": "7.5.5",
"#react-native-community/eslint-config": "0.0.3",
"babel-jest": "24.8.0",
"eslint": "6.1.0",
"jest": "24.8.0",
"metro-react-native-babel-preset": "0.54.1",
"react-test-renderer": "16.8.6"
},
"jest": {
"preset": "react-native"
}
}
Created module successfully installed but I think it is not linked properly and it will gives error.
So what is wrong here ?
Please give me suggestion / help.
Thanks.

Answer 1

I am assuming your module is successfully published in npm repository. Otherwise you can not use npm install <full path of component>.
If you are using
npm install <full path of component>
command for installing your module to a Test App from npm repo. Specify in your package.json like
"<created-module-name>": "file:../<created-module-name>"
is wrong. You need to remove that line from your package.json and try to install like;
npm install --save <full path of component>
This will automatically create a line in your package.json. You can now manually link your module.
For manual linking you can follow that guide.
Edited:
If you are using in your local computer,
Then no need to npm install.
Just copy your module into your project node_modules folder.
Then in you package.json add;
"dependencies": {
...
"your_module_name": "your_module_version"
...
}
Then, you just follow the manual linking process that I mentioned above.