eslint/eslint · Evidence Report

Window2025-09-02 – 2026-09-11

Timezone–

Commits read476

Contributors89

Model calls0

What the evidence shows

8 declared threshold(s) crossed

Thresholds are declared data, not prose. Each finding names its metric and the value that crossed it. None asserts a cause.

critical

Rule: process.review_coverage threshold crossed · value 8.8%

warning

Rule: ai.test_ratio_delta threshold crossed · value -33.9%

warning

Rule: delivery.stale_pr_share threshold crossed · value 40.6%

warning

Rule: people.bus_factor threshold crossed · value 1

warning

Rule: process.direct_push_share threshold crossed · value 32.9%

warning

Rule: temporal.weekend_share threshold crossed · value 24.3%

info

Rule: process.stale_branch_share threshold crossed · value 85.5%

info

Rule: quality.duplication_rate threshold crossed · value 19.4%

Delivery and process

Median time from ready to shipped

8.2 h

over 139 of 200 pull requests · (lower is generally preferred)

MEASURED70% coverage

Explain

Share of merged changes with a recorded review

99.3%

138 reviewed / 139 merged · (higher is generally preferred)

MEASURED70% coverage

Explain

Slowest tenth of changes take at least

5.6 a contributors

over 139 of 200 pull requests · (lower is generally preferred)

MEASURED70% coverage

Explain

Median wait for the first human review

4.9 h

over 162 of 200 pull requests · (lower is generally preferred)

MEASURED81% coverage

Explain

Releases to the main branch per week

8.9

over 476 of 476 commits · (higher is generally preferred)

PROXY · MED

Explain

Share of changes that needed a fix or revert

22.9%

109 failures / 476 landings · (lower is generally preferred)

PROXY · LOW

Explain

Median time to repair a reverted change

UNAVAILABLE

Unavailable · not collected

Requires: No eligible records in this window.

UnavailableNot zero

What this needs

Changes currently waiting

over 9 of 200 pull requests · (lower is generally preferred)

MEASURED4% coverage

Explain

Volume and cadence

Commits

476

over 476 of 476 commits

MEASURED

Explain

Lines of code added

709,889

over 3,841 of 4,196 file changes

MEASURED92% coverage

Explain

Lines of code removed

67,958

over 3,841 of 4,196 file changes

MEASURED92% coverage

Explain

Net change in codebase size

641,931

over 476 of 476 commits

MEASURED

Explain

Days per week with any activity

4.55

over 476 of 476 commits

MEASURED

Explain

Median commit size

over 414 of 476 commits

MEASURED87% coverage

Explain

Lines changed per active day

3,201

over 476 of 476 commits

MEASURED

Explain

Share of work that is new capability

12.8%

61 feature / 476 classified

PROXY · MED

Explain

Agent and cost

7 of 11 metrics in this section are inferred. Each is marked individually; the tier is a property of how the number was obtained, not a defect.

Commits carrying an AI-tool trace (floor)

≥ 0.2%

1 detected / 476 n · a detectable floor, not a share

INFERRED · MED

Explain

Lines arriving in AI-traced commits (floor)

≥ 0.0%

69 detected_lines / 709,889 total_lines · a detectable floor, not a share

INFERRED · LOW

Explain

Contributors with any AI-traced commit

≥ 1.1%

1 adopters / 89 n · a detectable floor, not a share

INFERRED · MED

Explain

Share of AI traces from the single most-used tool

≥ 100.0%

1 top_tool_commits / 1 total_traces · a detectable floor, not a share

INFERRED · MED

Explain

Rework gap between AI-traced and untraced work

≥ -2.0%

0 ai_rate / 2 human_rate · a detectable floor, not a share · (lower is generally preferred)

INFERRED · LOW

Explain

Test-ratio gap between AI-traced and untraced work

≥ -68.2%

0 ai_rate / 68.2 human_rate · a detectable floor, not a share · (higher is generally preferred)

INFERRED · LOW

Explain

Size gap between AI-traced and untraced commits

≥ 86.5%

69 ai_size / 37 human_size · a detectable floor, not a share

INFERRED · LOW87% coverage

Explain

AI tool configuration files present

over 1 of 1 repositories

MEASURED

Explain

Quality signals

8 of 12 metrics in this section are proxy. Each is marked individually; the tier is a property of how the number was obtained, not a defect.

Rework rate: new code rewritten within 21 days

2.0%

13,925 reworked_lines / 709,889 added_lines · (lower is generally preferred)

PROXY · MED

Explain

Share of new code that is tests

68.2%

483,913 test_lines / 709,889 total_lines · (higher is generally preferred)

PROXY · MED

Explain

Share of code changes that updated tests too

72.3%

159 coupled / 220 code_commits · (higher is generally preferred)

PROXY · MED46% coverage

Explain

Share of all changes landing in the busiest 10 files

23.7%

10 top_n / 184,684 top_changes · (lower is generally preferred)

MEASURED

Explain

Share of changes too large to review properly

5.5%

11 large / 200 n · (lower is generally preferred)

PROXY · MED

Explain

Share of functions long enough to be hard to follow

4.9%

124 long / 2,508 n · (lower is generally preferred)

PROXY · MED

Explain

Deepest nesting in the worst tenth of functions

over 2,508 of 2,508 functions measured · (lower is generally preferred)

PROXY · MED

Explain

Share of code that is copy-pasted

40.9%

194,307 duplicated_lines / 474,616 scanned_lines · (lower is generally preferred)

PROXY · MED

Explain

People

Active contributors

over 89 of 89 commit authors

MEASURED

Explain

Bus factor: people holding half the code

over 89 of 89 contributors · (higher is generally preferred)

MEASURED

Explain

Share of the code written by one person

83.5%

649,811 top_lines / 777,847 total_lines · (lower is generally preferred)

MEASURED

Explain

Share of work from people new to this codebase

97.3%

756,990 newcomer_lines / 777,847 total_lines

MEASURED

Explain

Share of files only one person has ever touched

60.4%

1,366 single_owner / 2,263 files · (lower is generally preferred)

MEASURED

Explain

Share of contributors still active in the last 90 days

56.2%

50 recent / 89 total · (higher is generally preferred)

MEASURED

Explain

Commits per month

Counts · observed intervals only

Share of merges with a review

Rate · gaps are never bridged

Commits with an AI trace (floor)

A detectable floor · only tools that left a trace are counted

Proportion and completeness

Numerator and denominator always adjacent

Merged changes carrying a review

Collection completeness

Evidence and verification

33 measured · 17 proxy · 7 inferred

Each state is carried three times over: in words, in a pattern or stroke, and in placement. Any single channel can fail without losing the meaning: print, colour vision, or a high-contrast mode.

Measured · solid

Counted directly from a source record.

Proxy · 45° hatch

An estimator standing in for the thing itself. Always carries a caveat.

Inferred · stipple

Derived from detectable traces only. Reads as a floor, never a share.

Partial · 135° hatch

Opposite orientation to proxy, so the two never read as one another.

Unavailable · blank

A stated reason and the capability required. Never a zero.

Suppressed · absent

No value, no plotted position, no tooltip, no cell in any download.

Derivation · process.review_coverage

Formula	138 merged pull requests with a review / 139 merged = 99.3%
Sample	n = 139 of population 200 pull requests · 69.5% coverage
Excluded	61 · pull requests not merged (open or closed unmerged)
Assumption	Only GitHub review records count. Approval given in a plain comment, over chat, or in person is invisible, so a team with a different review habit will score unfairly low — verify against the listed examples before treating a low number as a finding.
Strongest evidence	Rank 1: 4.0 lines merged unreviewed.

Coverage and limitations

Repositories collected	6
Repositories failed	0
Lines excluded as generated	555,383
Pull request collection truncated	6 repository(-ies). Every pull-request metric inherits that ceiling.

Every metric

All metrics in this scope

Metric	Identifier	Value	Evidence kind	Confidence	Coverage	State
Median time from ready to shipped	delivery.lead_time_p50	8.2 h	measured	high	70%	Observed
Slowest tenth of changes take at least	delivery.lead_time_p90	5.6 a contributors	measured	high	70%	Observed
Median wait for the first human review	delivery.time_to_first_review_p50	4.9 h	measured	high	81%	Observed
Releases to the main branch per week	delivery.deploy_frequency_per_week	8.9	proxy	medium	100%	Observed
Share of changes that needed a fix or revert	delivery.change_failure_rate	22.9%	proxy	low	100%	Observed
Median time to repair a reverted change	delivery.mttr_hours	–	proxy	low	0%	Unavailable
Changes currently waiting	delivery.wip_open_prs	9	measured	high	4%	Observed
Share of open changes stalled over 30 days	delivery.stale_pr_share	0.0%	measured	high	4%	Observed
Commits	velocity.commits_total	476	measured	high	100%	Observed
Lines of code added	velocity.lines_added	709,889	measured	high	92%	Observed
Lines of code removed	velocity.lines_removed	67,958	measured	high	92%	Observed
Net change in codebase size	velocity.net_lines	641,931	measured	high	100%	Observed
Days per week with any activity	velocity.active_days_per_week	4.55	measured	high	100%	Observed
Median commit size	velocity.commit_size_p50	37	measured	high	87%	Observed
Lines changed per active day	velocity.lines_per_active_day	3,201	measured	high	100%	Observed
Share of work that is new capability	velocity.feature_work_share	12.8%	proxy	medium	100%	Observed
Share of commits that are trivial	velocity.trivial_commit_share	30.7%	proxy	medium	100%	Observed
Rework rate: new code rewritten within 21 days	quality.rework_rate	2.0%	proxy	medium	100%	Observed
Share of new code that is tests	quality.test_line_ratio	68.2%	proxy	medium	100%	Observed
Share of code changes that updated tests too	quality.test_coupling_rate	72.3%	proxy	medium	46%	Observed
Share of all changes landing in the busiest 10 files	quality.hotspot_concentration	23.7%	measured	high	100%	Observed
Share of changes too large to review properly	quality.large_change_share	5.5%	proxy	medium	100%	Observed
Share of functions long enough to be hard to follow	quality.long_function_share	4.9%	proxy	medium	100%	Observed
Deepest nesting in the worst tenth of functions	quality.max_nesting_p90	4	proxy	medium	100%	Observed
Share of code that is copy-pasted	quality.duplication_rate	40.9%	proxy	medium	100%	Observed
Share of lines that are comments	quality.comment_density	10.2%	proxy	medium	100%	Observed
Commits carrying an AI-tool trace (floor)	ai.detected_commit_share	0.2%	inferred	medium	100%	Observed
Lines arriving in AI-traced commits (floor)	ai.detected_line_share	0.0%	inferred	low	100%	Observed
Contributors with any AI-traced commit	ai.adopter_share	1.1%	inferred	medium	100%	Observed
Share of AI traces from the single most-used tool	ai.tool_concentration	100.0%	inferred	medium	100%	Observed
Rework gap between AI-traced and untraced work	ai.rework_delta	-2.0%	inferred	low	100%	Observed
Test-ratio gap between AI-traced and untraced work	ai.test_ratio_delta	-68.2%	inferred	low	100%	Observed
Size gap between AI-traced and untraced commits	ai.commit_size_delta	86.5%	inferred	low	87%	Observed
AI tool configuration files present	ai.config_artifact_count	2	measured	high	100%	Observed
Share of AI suggestions actually accepted	ai.native_acceptance_rate	–	measured	high	–	Unavailable
Lines accepted from AI suggestions (measured)	ai.native_lines_accepted	–	measured	high	–	Unavailable
How far the commit-trace floor understates measured AI use	ai.floor_understatement	–	measured	medium	–	Unavailable
Active contributors	people.active_contributors	89	measured	high	100%	Observed
Bus factor: people holding half the code	people.bus_factor	1	measured	high	100%	Observed
Share of the code written by one person	people.top_contributor_share	83.5%	measured	high	100%	Observed
Share of work from people new to this codebase	people.newcomer_share	97.3%	measured	high	100%	Observed
Share of files only one person has ever touched	people.knowledge_silo_share	60.4%	measured	high	100%	Observed
Share of contributors still active in the last 90 days	people.contributor_retention	56.2%	measured	high	100%	Observed
Share of merged changes with a recorded review	process.review_coverage	99.3%	measured	high	70%	Observed
Share of changes merged by their own author	process.self_merge_share	1.4%	measured	high	70%	Observed
Median change size	process.pr_size_p50	19	measured	high	100%	Observed
Share of reviews done by one person	process.reviewer_load_top_share	26.8%	measured	high	100%	Observed
Share of work that bypassed pull requests	process.direct_push_share	75.8%	proxy	medium	100%	Observed
Share of branches abandoned over 90 days	process.stale_branch_share	88.7%	measured	high	100%	Observed
Branches	process.branch_count	124	measured	high	100%	Observed
Share of work saved outside working hours	temporal.after_hours_share	49.8%	proxy	medium	100%	Observed
Share of work saved at weekends	temporal.weekend_share	24.2%	proxy	medium	100%	Observed
Busiest hour of the day	temporal.peak_hour	17:00–18:00 local	measured	high	100%	Observed
How bursty the work pattern is	temporal.burstiness	1.23x	proxy	low	100%	Observed
Share of automated checks that failed	ci.failure_rate	3.0%	measured	high	100%	Observed
Median time for automated checks to finish	ci.duration_p50_minutes	2.7 min	measured	high	100%	Observed
Automated check runs per week	ci.runs_per_week	3.74	measured	high	100%	Observed

Provenance. Computed from eslint/eslint, window [2025-09-02, 2026-09-11). 0 language-model calls. 555,383 lines excluded as generated before any metric was computed.

Redaction 1 · privacy policy 1.1.0.

No contributor is named, ranked or ordered anywhere in this document. That capability does not exist in the system that produced it.