Analyzed
2 days
ago.
based on code collected
3 days
ago.
Project Summary
Adds static typing to JavaScript to improve developer productivity and code quality.
In a Nutshell, Facebook Flow...
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has a well established, mature codebase
maintained by a very large development team
with stable Y-O-Y commits -
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took an estimated 313 years of effort (COCOMO model)
starting with its first commit in May, 2014
ending with its most recent commit 2 days ago
Quick Reference
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Poor security track-record
Favorable security track-record
Vulnerability Exposure Index
Many reported vulnerabilities
Few reported vulnerabilities
Did You Know...
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there are over 3,000 projects on the Open Hub with security vulnerabilities reported against them
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data presented on the Open Hub is available through our API
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in 2016, 47% of companies did not have formal process in place to track OS code
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30 Day SummaryMay 1 2026 — May 31 2026
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12 Month SummaryMay 31 2025 — May 31 2026
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