mozilla / pdf.js - Source Code Overview

Analysis scope, overview of main, test, generated, deployment, build, and other code.

Source Code Analysis Scope

Files includes and excluded from analyses

mjs

gitattributes

txt

stylelintignore

editorconfig

njk

prettierignore

17 extensions are included in analyses: js, ftl, svg, mjs, css, html, md, yaml, json, gitignore, gitattributes, txt, ts, stylelintignore, editorconfig, njk, prettierignore
5 criteria are used to exclude files from analysis:

exclude files with path like ".*/[.][a-zA-Z0-9_]+.*" (Hidden files and folders) (18 files).
exclude files with path like ".*/docs/.*" (Documentation) (8 files).
exclude files with path like ".*/docs?/_?(build|themes?|templates?|static)/.*" (Sphinx) (0 files).
exclude files with path like ".*/extern(al)?/.*" (Dependencies) (81 files).
exclude files with path like ".*/dist/.*" (Distributions) (0 files).

The source code folder contains 2,160 files:

592 files are included in analyses.
1,568 files are excluded from analyses:

Explore all files....

Overview of Analyzed Files

Basic stats on analyzed files

Intro

For analysis purposes we separate files in scope into several categories: main, test, generated, deployment and build, and other.

The main category contains all manually created source code files that are being used in the production.
Files in the main category are used as input for other analyses: logical decomposition, concerns, duplication, file size, unit size, and conditional complexity.
Test source code files are used only for testing of the product. These files are normally not deployed to production.
Build and deployment source code files are used to configure or support build and deployment process.
Generated source code files are automatically generated files that have not been manually changed after generation.
While a source code folder may contain a number of files, we are primarily interested in the source code files that are being written and maintained by developers.
Files containing binaries, documentation, or third-party libraries, for instance, are excluded from analysis. The exception are third-party libraries that have been changed by developers.

400 files

99 files

93 files

Main Code

All manually created or maintained source code that defines logic of the product that is run in a production environment.

mjs

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The following criteria are used to filter files:

files with paths like ".*".

400 files match defined criteria (168,422 LOC, 100.0% vs. main code):

264 *.js files (115,352 LOC)
112 *.ftl files (43,558 LOC)
14 *.css files (5,182 LOC)
3 *.mjs files (3,345 LOC)
7 *.html files (985 LOC)

" *.js" is biggest, containing 68.49% of LOC.
" *.html" is smallest, containing 0.58% of LOC.

Test Code

Used only for testing of the product. Normally not deployed in a production environment.

mjs

Explore: circles | sunburst

The following criteria are used to filter files:

files with paths like ".*/[Tt]est/.*".
files with paths like ".*/test_.*".
files with paths like ".*_test[.].*".
files with paths like ".*_tests[.].*".
files with paths like ".*/test[.].*".

99 files match defined criteria (42,565 LOC, 25.3% vs. main code):

66 *.js files (26,175 LOC)
22 *.mjs files (15,907 LOC)
4 *.html files (231 LOC)
5 *.css files (218 LOC)
2 *.ts files (34 LOC)

" *.js" is biggest, containing 61.49% of LOC.
" *.ts" is smallest, containing 0.08% of LOC.

Other Code

mjs

Explore: circles | sunburst

The following criteria are used to filter files:

files with paths like ".*[.]editorconfig".
files with paths like ".*/[Ee]xamples/.*".
files with paths like ".*/[.]gitignore".
files with paths like ".*[.]md".
files with paths like ".*/README[.][a-z0-9]+".
files with paths like ".*[.]json".
files with paths like ".*[.]txt".
files with paths like ".*/[.]stylelintignore".
files with paths like ".*[.]svg".
files with paths like ".*/[.]prettierignore".

93 files match defined criteria (2,504 LOC, 1.5% vs. main code):

9 *.mjs files (808 LOC)
10 *.json files (559 LOC)
10 *.html files (418 LOC)
55 *.svg files (339 LOC)
1 *.css files (200 LOC)
7 *.md files (165 LOC)
1 *.js files (15 LOC)

" *.mjs" is biggest, containing 32.27% of LOC.
" *.js" is smallest, containing 0.6% of LOC.

Analyzers

Info about analyzers used for source code examinations.

*.js files are analyzed with JavaScriptAnalyzer:

All basic standard analyses supported (source code overview, duplication, file size, concerns, findings, metrics, controls)

Advanced code cleaning (empty lines and comments removed for LOC calculations, additional cleaning for duplication calculations)

Unit size analysis

Conditional complexity analysis

No dependency analysis

*.ftl files are analyzed with DefaultLanguageAnalyzer:

All basic standard analyses supported (source code overview, duplication, file size, concerns, findings, metrics, controls)

Basic code cleaning (empty lines removed for LOC calculations and duplication calculations)

No unit size analysis

No conditional complexity analysis

No dependency analysis

*.css files are analyzed with CssAnalyzer:

All basic standard analyses supported (source code overview, duplication, file size, concerns, findings, metrics, controls)

Advanced code cleaning (empty lines and comments removed for LOC calculations, additional cleaning for duplication calculations)

No unit size analysis

No conditional complexity analysis

No dependency analysis

*.mjs files are analyzed with DefaultLanguageAnalyzer:

All basic standard analyses supported (source code overview, duplication, file size, concerns, findings, metrics, controls)

Basic code cleaning (empty lines removed for LOC calculations and duplication calculations)

No unit size analysis

No conditional complexity analysis

No dependency analysis

*.html files are analyzed with HtmlAnalyzer:

All basic standard analyses supported (source code overview, duplication, file size, concerns, findings, metrics, controls)

Advanced code cleaning (empty lines and comments removed for LOC calculations, additional cleaning for duplication calculations)

Unit size analysis

Conditional complexity analysis

Advanced heuristic dependency analysis

2025-05-11 19:40