Module extract 

Re-exports from fallow-extract.

All parsing/extraction logic has been moved to the fallow-extract crate. This module provides backwards-compatible re-exports so that fallow_core::extract::* paths continue to resolve.

Modules

astro

Astro component frontmatter extraction.

css

CSS/SCSS file parsing and CSS Module class name extraction.

flags

Feature flag detection via lightweight Oxc AST visitor.

inventory

Function inventory walker for fallow coverage upload-inventory.

mdx

MDX import/export statement extraction.

sfc

Vue/Svelte Single File Component (SFC) script and style extraction.

visitor

Visitor utilities for AST extraction.

Structs

DynamicImportInfo

A dynamic import() call.

DynamicImportPattern

A dynamic import with a partially resolved pattern.

ExportInfo

An export declaration.

ImportInfo

An import declaration.

MarkupClassScan

The result of scanning one markup source for class references.

MarkupClassToken

A static class token referenced in markup, with the 1-based line it sits on.

MemberAccess

A static member access expression (e.g., Status.Active, MyClass.create()).

MemberInfo

A member of an enum, class, or namespace.

ModuleInfo

Extracted module information from a single file.

ParseResult

Result of parsing all files, including incremental cache statistics.

ReExportInfo

A re-export declaration.

RequireCallInfo

A require() call.

TailwindArbitraryUse

One use of a Tailwind arbitrary-value utility, with the 1-based line it appears on.

ThemeScan

Result of scanning a CSS source for Tailwind v4 @theme blocks.

ThemeTokenDef

A Tailwind v4 @theme token definition: the custom-property name WITHOUT the leading -- (e.g. color-brand) and its 1-based line in the source.

Enums

ExportName

Export identifier.

ImportedName

How a symbol is imported.

MemberKind

The kind of member.

SkippedSecurityCalleeExpressionKind

Syntactic expression shape for a skipped security callee.

SkippedSecurityCalleeReason

Why a sink-shaped callee could not be flattened into a static catalogue path.

VisibilityTag

Visibility tag from JSDoc/TSDoc comments that suppresses unused-export detection.

Functions

compute_css_analytics

Compute structural CSS analytics for a standard-CSS stylesheet source.

extract_apply_tokens

Extract the utility tokens referenced in @apply directive bodies across a CSS source (comment / string masked). @apply rounded-card font-bold; yields ["rounded-card", "font-bold"]. The leading-! and trailing-! important modifiers and a bare !important token are stripped, so a theme token whose utility is applied only via @apply is credited as used.

extract_astro_frontmatter

Extract frontmatter from an Astro component.

extract_astro_style_regions

Extract Astro <style> block bodies while preserving original byte offsets.

extract_astro_template_regions

Extract Astro template markup regions while preserving original byte offsets.

extract_css_module_exports

Extract class names from a CSS module file as named exports.

extract_mdx_statements

Extract import/export statements from MDX content.

extract_sfc_scripts

Extract all <script> blocks from a Vue/Svelte SFC source string.

extract_sfc_styles

Extract all <style> blocks from a Vue/Svelte SFC source string.

extract_sfc_template_regions

Extract template markup regions from a Vue/Svelte SFC.

is_edit_distance_one

True when a and b differ by exactly one single-character edit (one substitution, insertion, or deletion). Equal strings return false. Runs in O(min(len)) without building a full edit-distance matrix.

is_glimmer_file

Return true for Glimmer source files.

is_sfc_file

Check if a file path is a Vue or Svelte SFC (.vue or .svelte).

is_typo_edit

True when defined is a likely TYPO target for token: exactly one edit apart AND that edit is a believable mistake, not a deliberate naming variation. This is stricter than is_edit_distance_one because real codebases are full of one-edit class pairs that are NOT typos:

parse_all_files

Parse all files in parallel, extracting imports and exports. Uses the cache to skip reparsing files whose content hasn’t changed.

parse_from_content

Parse from in-memory content (for LSP, includes complexity).

parse_single_file

Parse a single file and extract module information (without complexity).

scan_markup_class_tokens

Scan a markup source for static class tokens and a dynamic-construction flag.

scan_tailwind_arbitrary_values

Scan markup source for Tailwind arbitrary-value utility tokens, one entry per occurrence. The caller must gate this on the project using Tailwind (the token shape is Tailwind-specific but not exclusive).

scan_theme_blocks

Scan a CSS source for Tailwind v4 @theme blocks, returning the defined design tokens plus the custom properties read via var() inside those blocks.

scoped_unused_classes

Returns class names defined in <style scoped> blocks of an SFC that appear nowhere else in the component (cleanup candidates), sorted. Returns an empty vec when the source has no analyzable scoped block.

sfc_virtual_stylesheet

Build a “virtual stylesheet” from an SFC’s plain-CSS <style> blocks (any scoping). Each block body is placed at its real line in the SFC via blank-line padding, so CSS metric line numbers from compute_css_analytics map straight back onto the SFC. Returns None when the SFC has no plain-CSS <style> block (e.g. only lang="scss" blocks, which the CSS parser cannot read), so callers run the standard .css metric path on Vue/Svelte component styles.

strip_glimmer_templates

Strip Glimmer <template> blocks while preserving byte offsets and line numbers for the JavaScript/TypeScript parser.