JavaScript client installation in Supabase - Step-by-Step Execution

Process Flow - JavaScript client installation

Start

↓

Open Terminal

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Run npm install command

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Wait for installation

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Check node_modules folder

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Import client in code

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Use client to connect

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End

This flow shows how to install the Supabase JavaScript client step-by-step, from opening the terminal to using the client in your code.

Execution Sample

Supabase

npm install @supabase/supabase-js

import { createClient } from '@supabase/supabase-js';

const supabase = createClient('url', 'anon_key');

This code installs the Supabase client and creates a new client instance with your project URL and anon key.

Process Table

Step	Action	Command/Code	Result
1	Open terminal	User opens terminal or command prompt	Ready to enter commands
2	Run install command	npm install @supabase/supabase-js	Package downloaded and added to node_modules
3	Verify installation	Check node_modules/@supabase/supabase-js	Folder exists with package files
4	Import client	import { createClient } from '@supabase/supabase-js';	createClient function available in code
5	Create client instance	const supabase = createClient('url', 'anon_key');	supabase object ready to use
6	Use client	supabase.from('table').select('*')	Query sent to Supabase backend
7	Exit	Installation and setup complete	Ready to build app with Supabase

💡 Installation completes when package is added and client instance is created successfully

Status Tracker

Variable	Start	After Step 4	After Step 5	Final
createClient	undefined	function	function	function
supabase	undefined	undefined	object (client instance)	object (client instance)

Key Moments - 2 Insights

Why do we run 'npm install' before importing the client?

Because the package must be downloaded and added to your project before you can import and use it, as shown in execution_table step 2 and 4.

What does 'createClient' do?

It creates a Supabase client object that connects your app to your Supabase project, as seen in execution_table step 5.

Visual Quiz - 3 Questions

Look at the execution table, what is the result after running 'npm install @supabase/supabase-js'?

A Client instance created

B Terminal closed

C Package downloaded and added to node_modules

D Import statement executed

💡 Hint

Check execution_table row 2 under Result column

At which step does the 'supabase' variable become an object?

A Step 4

B Step 5

C Step 3

D Step 6

💡 Hint

Look at variable_tracker for 'supabase' changes and execution_table step 5

If you skip running 'npm install', what will happen when you try to import the client?

A You will get an error because package is missing

B Client will connect automatically

C Import will work fine

D Terminal will close

💡 Hint

Refer to key_moments about why installation is needed before import

Concept Snapshot

JavaScript client installation for Supabase:
1. Open terminal
2. Run 'npm install @supabase/supabase-js'
3. Import with 'import { createClient } from "@supabase/supabase-js"'
4. Create client: 'createClient(url, anon_key)'
5. Use client to interact with your database
Always install before importing.

Full Transcript

To install the Supabase JavaScript client, first open your terminal. Then run the command 'npm install @supabase/supabase-js' to download the package. After installation, verify the package is in your node_modules folder. In your code, import the createClient function from the package. Use createClient with your Supabase project URL and anon key to create a client instance. This client lets you connect and query your Supabase backend. Installation must happen before import to avoid errors. Once set up, you can build your app using the Supabase client.