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.

Constants

ANGULAR_TPL_SENTINEL

Sentinel value used as the object field in MemberAccess entries produced by the Angular template scanner. The analysis phase checks imports for entries with this sentinel and merges them into the component’s self_accessed_members set.

FACTORY_CALL_SENTINEL

Synthetic member-access object prefix for static-factory call returns.

FLUENT_CHAIN_NEW_SENTINEL

Synthetic member-access object prefix for fluent chains rooted at a new expression.

FLUENT_CHAIN_SENTINEL

Synthetic member-access object prefix for fluent-builder chain credit.

INSTANCE_EXPORT_SENTINEL

Synthetic member-access object used to carry exported-instance bindings.

PLAYWRIGHT_FIXTURE_ALIAS_SENTINEL

Synthetic member-access object prefix for Playwright fixture wrapper aliases.

PLAYWRIGHT_FIXTURE_DEF_SENTINEL

Synthetic member-access object prefix for typed Playwright fixtures.

PLAYWRIGHT_FIXTURE_TYPE_SENTINEL

Synthetic member-access object prefix for exported Playwright fixture type aliases.

PLAYWRIGHT_FIXTURE_USE_SENTINEL

Synthetic member-access object prefix for Playwright fixture member uses.

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_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.

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.