Repository Analysis

Shopify/liquid

Liquid markup language. Safe, customer facing template language for flexible web apps.

4.4 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of Shopify/liquid, a Ruby project with 11,834 GitHub stars. SynthScan v2.0 examined 22,251 lines of code across 164 source files, recording 93 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 4.4 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

4.4
Adjusted Score
4.4
Raw Score
100%
Time Factor
2026-07-05
Last Push
11.8K
Stars
Ruby
Language
22.3K
Lines of Code
164
Files
93
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 2LOW 91

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 93 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block61 hits · 58 pts
SeverityFileLineSnippetContext
LOW.rubocop_todo.yml1# This configuration was generated byCOMMENT
LOWtest/unit/condition_unit_test.rb201 #COMMENT
LOWlib/liquid.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/drop.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/profiler.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/profiler.rb21 # inside of <tt>{% include %}</tt> tags.COMMENT
LOWlib/liquid/file_system.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/file_system.rb21 endCOMMENT
LOWlib/liquid/template.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/template.rb121 endCOMMENT
LOWlib/liquid/environment.rb21COMMENT
LOWlib/liquid/variable.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/context.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tablerowloop_drop.rb21 # @liquid_return [number]COMMENT
LOWlib/liquid/tablerowloop_drop.rb61 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb61 # @liquid_syntax variable | sizeCOMMENT
LOWlib/liquid/standardfilters.rb81 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb101 # @liquid_type filterCOMMENT
LOWlib/liquid/standardfilters.rb121 endCOMMENT
LOWlib/liquid/standardfilters.rb141 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb181 # @liquid_type filterCOMMENT
LOWlib/liquid/standardfilters.rb261 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb321 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb341COMMENT
LOWlib/liquid/standardfilters.rb381 # @liquid_public_docsCOMMENT
LOWlib/liquid/standardfilters.rb461 # @liquid_type filterCOMMENT
LOWlib/liquid/standardfilters.rb481 # @liquid_return [boolean]COMMENT
LOWlib/liquid/standardfilters.rb501 # @liquid_category arrayCOMMENT
LOWlib/liquid/standardfilters.rb541 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb601 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb661 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb681 # @liquid_type filterCOMMENT
LOWlib/liquid/standardfilters.rb721 string + inputCOMMENT
LOWlib/liquid/standardfilters.rb741 # @liquid_descriptionCOMMENT
LOWlib/liquid/standardfilters.rb761 # %U - Week number of the current year,COMMENT
LOWlib/liquid/standardfilters.rb781COMMENT
LOWlib/liquid/standardfilters.rb801 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb821 endCOMMENT
LOWlib/liquid/standardfilters.rb841 def minus(input, operand)COMMENT
LOWlib/liquid/standardfilters.rb901 # @liquid_summaryCOMMENT
LOWlib/liquid/standardfilters.rb941 # @liquid_category mathCOMMENT
LOWlib/liquid/standardfilters.rb961 # - [`false`](/docs/api/liquid/basics#truthy-and-falsy)COMMENT
LOWlib/liquid/forloop_drop.rb21 # @liquid_return [number]COMMENT
LOWlib/liquid/self_drop.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/table_row.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/echo.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/if.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/break.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/for.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/assign.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/doc.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/case.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/include.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/capture.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/decrement.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/unless.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/increment.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/comment.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/raw.rb1# frozen_string_literal: trueCOMMENT
LOWlib/liquid/tags/render.rb1# frozen_string_literal: trueCOMMENT
1 more matches not shown…
Fake / Example Data18 hits · 23 pts
SeverityFileLineSnippetContext
LOWperformance/shopify/vision.database.yml556 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore CODE
LOWperformance/shopify/vision.database.yml556 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore CODE
LOWperformance/shopify/vision.database.yml593 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore CODE
LOWperformance/shopify/vision.database.yml593 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore CODE
LOWperformance/shopify/vision.database.yml858 content: <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et CODE
LOWperformance/shopify/vision.database.yml858 content: <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et CODE
LOWperformance/shopify/vision.database.yml867 content: <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et CODE
LOWperformance/shopify/vision.database.yml867 content: <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et CODE
LOWperformance/shopify/vision.database.yml884 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml884 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml896 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml896 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml920 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml920 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml937 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml937 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml943 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
LOWperformance/shopify/vision.database.yml943 content: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore etCODE
Hyper-Verbose Identifiers11 hits · 11 pts
SeverityFileLineSnippetContext
LOWtest/test_helper.rb49 def assert_match_syntax_error(match, template, error_mode: nil)CODE
LOWtest/unit/condition_unit_test.rb382 def assert_evaluates_argument_error(left, op, right)CODE
LOWlib/liquid/parser_switching.rb13 def strict_parse_with_error_mode_fallback(markup)CODE
LOWlib/liquid/parser_switching.rb32 def parse_with_selected_parser(markup)CODE
LOWlib/liquid/parser_switching.rb66 def strict_parse_with_error_context(markup)CODE
LOWlib/liquid/tokenizer.rb156 def next_tag_token_with_start(start)CODE
LOWlib/liquid/variable.rb140 def lax_parse_filter_expressions(filter_name, unparsed_args)CODE
LOWlib/liquid/variable.rb196 def evaluate_filter_expressions(context, filter_args, filter_kwargs)CODE
LOWlib/liquid/context.rb271 def try_variable_find_in_environments(key, raise_on_not_found:)CODE
LOWlib/liquid/block_body.rb266 def raise_missing_tag_terminator(token, parse_context)CODE
LOWlib/liquid/block_body.rb271 def raise_missing_variable_terminator(token, parse_context)CODE
Slop Phrases3 hits · 8 pts
SeverityFileLineSnippetContext
MEDIUMlib/liquid/tags/echo.rb12 # bracket method, you can use the `echo` tag inside [`liquid` tags](/docs/api/liquid/tags/liquid).COMMENT
MEDIUMlib/liquid/tags/unless.rb14 # > Similar to the [`if` tag](/docs/api/liquid/tags/if), you can use `elsif` to add more conditions to an `unless` tCOMMENT
LOWperformance/shopify/vision.database.yml879 content: <p><strong>Welcome to your Shopify store! The jaded Pixel crew is really glad you decided to take ShopiCODE