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Colin MacKenzie

PROFILE

Colin Mackenzie

Worked on the expo/eas-cli and expo/expo repositories to deliver new CLI features and streamline project onboarding for Expo developers. Built automated project scaffolding commands that create and configure new projects, install dependencies, and initialize Git, reducing manual setup and improving consistency. Enhanced the EAS CLI with smarter defaults, improved package manager handling, and prioritized organization accounts during setup, all implemented using TypeScript, JavaScript, and Node.js. Updated CI/CD workflows in expo/expo to synchronize templates with the latest development branch. Focused on configuration management, testing, and UX polish, addressing reliability issues and reducing UI clutter for a smoother developer experience.

Overall Statistics

Feature vs Bugs

86%Features

Repository Contributions

8Total
Bugs
1
Commits
8
Features
6
Lines of code
4,727
Activity Months4

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for expo/eas-cli: Implemented EAS CLI Usage Warnings Display Enhancement to hide the build credits progress bar when usage reaches 100%, while continuing to display essential usage warnings. This reduces UI clutter during quota events and provides clearer runtime feedback. The change was delivered with a focused commit addressing #3371, and included a CHANGELOG update and collaboration across team members.

November 2025

3 Commits • 2 Features

Nov 1, 2025

November 2025 monthly summary for expo/eas-cli focusing on UX polish, reliability, and configuration cleanliness. Delivered organized improvements in project setup via account prioritization, fixed pre-config usage warnings in builds, and streamlined configuration by removing an unnecessary package manager spec. These changes reduce setup friction, improve build reliability, and simplify maintenance, enabling faster developer workflows and more predictable automation.

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025: Delivered a major upgrade to the Expo EAS CLI with a smarter 'eas new' UX, introducing smarter defaults and a streamlined project setup flow. Implemented improved defaults for project names and directories, enhanced package-manager handling, and a streamlined setup process for creating new Expo projects with EAS services. Added robust tests and refactoring to improve maintainability and user experience. No major bugs fixed this month; the focus was on feature delivery and code quality improvements to accelerate onboarding and ensure consistent project initialization for Expo users.

September 2025

3 Commits • 2 Features

Sep 1, 2025

September 2025: Delivered two major enhancements across expo/eas-cli and expo/expo that accelerate onboarding, improve consistency, and tighten template synchronization. Implemented Expo project scaffolding via EAS CLI with new commands to create a project from a default template, install dependencies, configure app.json and eas.json, initialize Git, and set up helper scripts, supporting both eas-cli new and eas new flows. Updated the GitHub Actions workflow in expo/expo to monitor the app template repository on the sdk-54 branch to keep templates aligned with the latest development work. These changes reduce onboarding time, minimize manual configuration, and improve CI/CD reliability across projects.

Activity

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Quality Metrics

Correctness96.2%
Maintainability90.0%
Architecture90.0%
Performance87.4%
AI Usage22.4%

Skills & Technologies

Programming Languages

JSONJavaScriptTypeScriptYAML

Technical Skills

CI/CDCLI DevelopmentCommand Line InterfaceConfiguration ManagementExpoGitGitHub ActionsJavaScriptNode.jsProject ScaffoldingRefactoringTestingTypeScriptfull stack developmentpackage management

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

expo/eas-cli

Sep 2025 Feb 2026
4 Months active

Languages Used

JSONJavaScriptTypeScriptYAML

Technical Skills

CLI DevelopmentCommand Line InterfaceConfiguration ManagementExpoGitNode.js

expo/expo

Sep 2025 Sep 2025
1 Month active

Languages Used

YAML

Technical Skills

CI/CDGitHub Actions