Duolingo Clone

A clone of the famous language-learning app using NextJs, TypeScript, and PostgrSQL.

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This repository is for learning purposes only.

Dependency Management

rm -rf node_modules package-lock.json

• rm: Stands for “remove.” It deletes files and directories.
• -r: Recursively deletes the contents of a directory.
• -f: Forces deletion without prompting for confirmation.
• node_modules: This is the folder where all installed dependencies are stored.
• package-lock.json: This file locks the versions of dependencies to ensure consistency across installations.

Purpose:

This command deletes the entire node_modules folder and the package-lock.json file. This is useful for:

• Clearing out corrupted or outdated dependencies.
• Ensuring a clean slate before reinstalling all packages.

npm install --legacy-peer-deps

• npm install: Installs all dependencies listed in package.json.
• --legacy-peer-deps: Bypasses peer dependency conflicts and installs packages the way older versions of npm did (prior to npm v7).

Purpose:

This is particularly useful when:

• Dependencies have incompatible peer dependencies that cause conflicts.
• You’re using older libraries that aren’t fully compatible with the latest npm version’s strict peer dependency rules.

Why use this combination?

• This sequence ensures that all dependencies are installed fresh without conflicts.
• It effectively resolves version conflicts that might occur due to strict peer dependencies by falling back to older rules.

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