Flow helps JavaScript teams surface type issues earlier and work with more confidence in evolving codebases.
Scores
The two headline scores, measured daily, with 30, 90, and 180 day views.
Jul 19, 2026
Current8
Previous19
Weekly average
Derived only from GitHub GraphQL starredAt events after daily star totals are reconciled.
180 observed daily rows. Missing days are not fabricated.
40% Hot today + 40% Hot this week + 20% Breakout.
Per-day formula: 0.40 × Hot today + 0.40 × Hot week + 0.20 × Breakout.
| Date | Stars | Stars 1d | Stars 7d | Stars 14d | Stars 30d | Stars 90d | Same-day multiplier | Weekly multiplier | Fortnight multiplier | Hot today | Hot week | Breakout | Stored score |
|---|
Jul 19, 2026
Current62
Previous62
Weekly average
Derived from the displayed continuity, closure, shipping, liveness, and support-burden components.
180 observed daily rows. Missing days are not fabricated.
30% Continuity + 30% Closure + 20% Shipping + 10% Liveness + 10% Support burden.
Per-day formula: 0.30 × Continuity + 0.30 × Closure + 0.20 × Shipping + 0.10 × Liveness + 0.10 × Support burden.
Stars, issues, pull requests, and releases are daily observations. Pushed-days and license are repository snapshot-derived inputs and are not independent historical GitHub events.
| Date | Issues opened | Issues closed | PRs opened | PRs merged | Releases | Stars | Open issues | Pushed days ago | Continuity | Closure | Shipping | Liveness | Support burden | License | Observed days | Missing days | Needs healing | Stored score |
|---|
Reliability breakdown
Component scores measured daily from GitHub activity (2026-07-18).
Activity on 43 of 90 tracked days in the last 90 and 15 of 30 in the last 30.
Merged 0 of 50 PRs opened and closed 66 of 7 issues opened over the last 90 tracked days — PR flow carries 55% of this component, issue flow 45%.
29 releases in the last 180 days, 13 in the last 90 and 3 in the last 30 — a steady cadence scores highest.
Last push 2 days ago — freshness decays as pushes age (roughly halves every 83 days without a push).
Open-issue load isn't tracked for this repo yet.
Modeled — lower is better; concentration of commits in few maintainers. Contributors graph
Topics
Jump into the topic listings this repository belongs to.
Measured history
Weekly GitHub totals with 30, 90, and 180 day views.
Jul 19, 2026
Current2
Previous14
Weekly star gains
GitHub GraphQL current stargazer cohort, reconstructed from starredAt events and totalCount retrieved in one stable pagination walk. GitHub does not expose historical unstar events, so this is not an exact ledger of past star counts.
180 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 19, 2026
Current22,273
Previous22,271
Cumulative total
Running total of the GitHub GraphQL stargazer count over time (not weekly deltas), reconstructed from starredAt events and totalCount in one stable pagination walk. GitHub does not expose historical unstar events, so this is not an exact ledger of past star counts.
180 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 12, 2026
Current1
Previous0
Weekly total
GitHub API observation. Historical values render only when the source provides a real observation for that day.
178 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 12, 2026
Current1
Previous4
Weekly total
GitHub Search issue totals queried for exact UTC days; rolling values are sums of proven daily counts.
178 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 12, 2026
Current0
Previous4
Weekly total
GitHub API observation. Historical values render only when the source provides a real observation for that day.
178 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 12, 2026
Current0
Previous8
Weekly total
GitHub Search pull-request totals queried for exact UTC days; rolling values are sums of proven daily counts.
178 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 12, 2026
Current0
Previous0
Weekly total
GitHub API observation. Historical values render only when the source provides a real observation for that day.
178 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Jul 15, 2026
Current19.00
Previous1.00
Daily ratio — a gap means nothing was opened that day
How this works: each day's value is issues closed that day ÷ issues opened that day. Days when nothing was opened render as gaps — never a rolling average or a made-up zero. Values above 1 mean the project closed more issues than arrived that day.
GitHub Search issue totals queried for exact UTC days; rolling values are sums of proven daily counts.
11 observed daily rows. Missing days are not fabricated.
Per-day formula: issues closed that day ÷ issues opened that day; blank when nothing was opened (a gap, not a zero).
| Date | Issues opened | Issues closed | Stored score |
|---|
Jul 15, 2026
Current1.00
Previous1.00
Daily ratio — a gap means nothing was opened that day
How this works: each day's value is pull requests closed that day ÷ pull requests opened that day. Days when nothing was opened render as gaps — never a rolling average or a made-up zero. Values above 1 mean the project closed more pull requests than arrived that day.
GitHub Search pull-request totals queried for exact UTC days; rolling values are sums of proven daily counts.
45 observed daily rows. Missing days are not fabricated.
Per-day formula: pull requests closed that day ÷ pull requests opened that day; blank when nothing was opened (a gap, not a zero).
| Date | PRs opened | PRs closed | Stored score |
|---|
Jul 19, 2026
Current0
Previous1
Weekly total
GitHub release published_at events bucketed by UTC day; drafts are excluded.
180 observed daily rows. Missing days are not fabricated.
| Date | Value |
|---|
Flow is a static type checker for JavaScript that helps identify type-related issues before code reaches production. It was designed to improve confidence in large JavaScript codebases by making assumptions explicit and supporting safer refactoring. For teams evaluating JavaScript type-checking options, Flow represents an alternative approach focused on static analysis and developer tooling.
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