tools-tailwind-class-scan

Checks that every Tailwind class literal used in Leptos view! markup is actually present in a built Tailwind CSS file. Catches a real class of bug: tailwind.css in examples/staff-host/spa is a manually-regenerated, checked-in artifact -- trunk build copies+hashes it but never recompiles it, so a class added to .rs source (e.g. grid-cols-8, sprint 3.68) can silently never reach the compiled CSS. A DOM/API-level check cannot see this -- the data renders correctly, only the layout is missing. Sprint 3.68 found this live via a screenshot, not any prior check.

Tier	tools
Role	unclassified (baselined)
Path	`crates/tools/tailwind-class-scan`
Edition	2021
Targets	tools-tailwind-class-scan, tools_tailwind_class_scan
Public items	2 across 0 modules
Tests	9

What it is for

Pure logic for tools-tailwind-class-scan. I/O (file walking, CLI) lives in main.rs; this module is deliberately dependency-light so it stays cheap to unit-test.

Capabilities

`crate root`

Pure logic for tools-tailwind-class-scan. I/O (file walking, CLI) lives in

Item
`fn extract_class_tokens(source : & str) -> Vec <String>`
`fn find_missing(tokens : & String, css : & str) -> Vec <String>`

How to use it

No examples/ target and no doctest in this crate's rustdoc. The tests listed under Verification are the closest executable usage.

Module structure

No public modules: the crate root is its whole surface.

Public surface

`crate root`

Item	What it is
`fn extract_class_tokens(source : & str) -> Vec <String>`	Extract every literal Tailwind class token from `class="..."` / `class=format!("...", ...)` attributes in a Leptos `view!` source file
`fn find_missing(tokens : & String, css : & str) -> Vec <String>`	Which of `tokens` are absent from `css` (a compiled Tailwind CSS file's content).

No pub use re-exports: every item above is declared in this crate.

Boundary

Depends on no other workspace tier.

Shares tier tools with 84 other crates: tools-advisory-reach, tools-archive-guard, tools-artifact-scaffold, tools-ask-ai-core, tools-ask-ais, tools-ask-gemini, tools-book, tools-book-report, … (84 total).

_What this crate deliberately does NOT own is a judgment. No committed registry records one for it, so none is stated here._

Where it sits

Tier (ontology)	`tools`
Architectural role (taxonomy)	`unclassified (baselined)`
Location	`crates/tools/tailwind-class-scan`
Vocabulary in force (lexicon)	`current`

Dependencies

Runtime, from outside the workspace.

Crate	Requirement	Features	Optional	Only on
`anyhow`	`^1`	—	no	always

Development. None.

Build. None.

Depended on by. Nothing in this workspace.

Feature flags

No Cargo features are defined: every capability is unconditional, so no consumer can receive a half-wired crate.

Targets

Kind	Name	Source
bin	`tools-tailwind-class-scan`	`src/main.rs`
lib	`tools_tailwind_class_scan`	`src/lib.rs`

Error model

No public error type was detected: no public item declares a type named *Error, and no public signature returns one.

Operational characteristics

Property	Evidence
async public surface	none detected
async runtime	none detected
database access	none detected
network I/O	none detected
unsafe code	none detected
environment variables	none detected

No unsafe block, unsafe fn, unsafe impl or unsafe trait was found by the parser anywhere in this crate's source.

Configuration

No environment variable is read with a literal name anywhere in this crate. A variable whose key is computed at run time cannot be listed here, and is not claimed to be absent.

No workspace crate depends on this one.

Verification

Kind	Count
Unit tests	9
Integration tests	0
Examples	0
Doctests	0

Evidence by module. How often each public module is named by something executable.

Module	Tests	Examples	Consumers
`crate root`	2	0	0

What the tests establish, by name:

a_present_variant_and_decimal_class_are_not_reported_missing — src/lib.rs
extracts_a_plain_static_class_attribute — src/lib.rs
extracts_literal_tokens_from_a_format_class_and_skips_the_placeholder — src/lib.rs
find_missing_dedupes_and_sorts — src/lib.rs
find_missing_reports_tokens_absent_from_the_css_and_none_when_all_present — src/lib.rs
handles_multiple_class_attributes_in_one_file — src/lib.rs
keeps_bracketed_arbitrary_value_classes — src/lib.rs
reproduces_the_sprint_3_68_stale_css_bug — src/lib.rs
skips_a_dynamic_class_expression_with_no_quote_on_the_line — src/lib.rs

Documentation coverage

Measure	Documented	Total
Public items with rustdoc	2	2
Public modules with a `//!` block	0	0

pie showData
    title Public items with rustdoc
    "Documented" : 2
    "No rustdoc detected" : 0

Metrics

Metric	Value
Rust source files	2
Source lines	236
Code lines	168
Public API items	2
Public modules	0
Tests	9
Examples	0
Cargo features	0
Direct runtime dependencies	1
Workspace reverse dependencies	0

pie showData
    title Public API by kind
    "function" : 2

pie showData
    title Rust source composition
    "Code" : 168
    "Blank or comment" : 68

Generation

Rendered by tools-corpus corpus readme from repository evidence alone, renderer schema 2, lexicon current. No model, network service or database was consulted. Regenerate with tools-corpus corpus readme --write; verify with --check.