Development Environment¶

Relevant source files * .gitignore

Purpose and Scope¶

This document describes the development environment setup and configuration for the Sequelize codebase. It covers the version control system, dependency management practices, and the general development workflow based on the repository's configuration files.

For detailed information about specific version control configuration patterns, see Version Control Configuration.

Note: Documentation is based on currently available configuration data from the repository. The primary source is the version control configuration file.

Overview¶

The Sequelize repository follows standard Node.js project conventions for managing development environments. The configuration indicates a Git-based version control workflow with npm/yarn for dependency management.

Development Environment Components¶

The following table summarizes the key components of the development environment:

Component	Technology	Evidence
Version Control	Git	.gitignore L1
Package Management	npm or yarn	Implied by `node_modules` exclusion in .gitignore L1
Runtime	Node.js	Implied by `node_modules` directory pattern
Dependency Storage	`node_modules/`	.gitignore L1

Sources: .gitignore L1

Version Control Configuration¶

The repository uses Git for version control. The .gitignore file defines which files and directories should be excluded from version tracking.

Repository Structure¶

flowchart TD

Root["Repository Root"]
Git[".git/<br>(Git metadata)"]
Ignore[".gitignore<br>(Version control rules)"]
NodeMods["node_modules/<br>(Excluded from VCS)"]
Source["Source Code<br>(Tracked files)"]

Root --> Git
Root --> Ignore
Root --> NodeMods
Root --> Source
Ignore --> NodeMods
Git --> Ignore

Figure 1: Repository file structure showing relationship between Git configuration and excluded directories

Sources: .gitignore L1

Excluded Patterns¶

The version control configuration explicitly excludes the following from Git tracking:

node_modules - Node.js dependency directory

This exclusion is standard practice in Node.js projects, as dependencies can be reconstructed from package manifest files and should not be committed to version control.

For comprehensive details on version control patterns, see Version Control Configuration.

Sources: .gitignore L1

Dependency Management¶

Node.js Package Ecosystem¶

The presence of node_modules in the .gitignore file indicates that the project uses the Node.js package management ecosystem. Dependencies are installed into the node_modules/ directory and excluded from version control.

flowchart TD

Dev["Developer"]
PackageManager["npm or yarn<br>(Package Manager)"]
Registry["npm Registry<br>(Package Source)"]
NodeModules["node_modules/<br>(Local Dependencies)"]
Manifest["package.json<br>(Expected manifest file)"]
GitIgnore[".gitignore"]

Dev --> PackageManager
PackageManager --> Manifest
PackageManager --> Registry
PackageManager --> NodeModules
NodeModules --> GitIgnore

Figure 2: Dependency management workflow showing how package managers interact with the node_modules/ directory

Sources: .gitignore L1

Installation Workflow¶

The typical dependency installation process follows this pattern:

Developer clones the repository (version-controlled files only)
Developer runs package manager installation command
Package manager reads project manifest
Dependencies are downloaded and installed to node_modules/
node_modules/ directory remains untracked per .gitignore rules

Sources: .gitignore L1

Development Workflow Integration¶

Git Workflow Context¶

flowchart TD

Tracked["Tracked Files<br>(Source code, configs)"]
GitIgnore[".gitignore"]
NodeModules["node_modules/<br>(Dependencies)"]
Runtime["Node.js Runtime"]
Clone["git clone"]
Install["npm install / yarn install"]
Develop["Code Development"]
Commit["git commit"]

Clone --> Tracked
Clone --> GitIgnore
Install --> NodeModules
Develop --> Tracked
Commit --> Tracked
Commit --> NodeModules
GitIgnore --> NodeModules
Tracked --> Runtime

subgraph subGraph2 ["Developer Actions"]
    Clone
    Install
    Develop
    Commit
end

subgraph subGraph1 ["Build/Runtime Environment"]
    NodeModules
    Runtime
    NodeModules --> Runtime
end

subgraph subGraph0 ["Version Control System"]
    Tracked
    GitIgnore
end

Figure 3: Development workflow showing the relationship between version-controlled files, ignored dependencies, and developer actions

Sources: .gitignore L1

File Categories¶

Based on the version control configuration, files in the repository fall into these categories:

Category	Examples	Version Controlled	Source
Ignored Dependencies	`node_modules/`	No	.gitignore L1
Source Code	`.js`, `.ts` files (expected)	Yes	Implicit from standard practice
Configuration	`.gitignore`	Yes	Present in repository
Build Artifacts	(not specified)	Unknown	No data available

Sources: .gitignore L1

Environment Setup Process¶

Initial Setup Steps¶

For a new developer setting up the Sequelize development environment, the expected process is:

Clone Repository: Obtain version-controlled source files git clone https://github.com/moichuelo/sequelize
Install Dependencies: Populate node_modules/ directory * The package manager will create the node_modules/ directory * This directory will be automatically ignored by Git per .gitignore L1
Verify Environment: Ensure all dependencies are correctly installed

Sources: .gitignore L1

File System State¶

After initial setup, the repository directory structure will include both tracked and ignored files:

flowchart TD

RepoDir["sequelize/<br>(Repository Root)"]
Tracked["Tracked Files"]
SourceFiles["Source Code Files"]
ConfigFiles["Configuration Files"]
GitIgnoreFile[".gitignore"]
Ignored["Ignored Files"]
NodeModulesDir["node_modules/"]

RepoDir --> Tracked
RepoDir --> Ignored
Tracked --> SourceFiles
Tracked --> ConfigFiles
ConfigFiles --> GitIgnoreFile
Ignored --> NodeModulesDir
GitIgnoreFile --> NodeModulesDir

Figure 4: File system hierarchy showing separation of tracked configuration files from ignored dependency directories

Sources: .gitignore L1

Configuration Files¶

Available Configuration Data¶

The following configuration files are documented based on available data:

File	Purpose	Location
`.gitignore`	Defines version control exclusions	Repository root

The .gitignore file contains exclusion patterns that prevent specific files and directories from being tracked by Git. Currently documented pattern: node_modules at .gitignore L1

Sources: .gitignore L1

Summary¶

The Sequelize development environment is configured as a standard Node.js project with Git version control. The .gitignore configuration ensures that dependency directories are excluded from version control, following Node.js ecosystem best practices. Developers set up their environment by cloning the repository and installing dependencies through a package manager, which creates the excluded node_modules/ directory locally.

Sources: .gitignore L1