css_variable_utils.ts

CSS variable extraction utilities.
Provides shared helper functions for extracting CSS custom property references
from CSS strings. Used by style_rule_parser, variable_graph, class_variable_index,
and css_class_generation.

Declarations
#

2 declarations

view source

extract_css_variables
#

css_variable_utils.ts view source

(css: string): Set<string>

Extracts CSS variable names from a CSS string.
Parses var(--name) patterns and returns the variable names
without the -- prefix. Handles fallback values by extracting
only the primary variable reference.

`css`

CSS string potentially containing var(--*) references

type string

returns

Set<string>

set of variable names (without -- prefix)

examples

extract_css_variables('color: var(--text_color);')
// → Set { 'text_color' }

extract_css_variables('background: var(--bg_1, var(--bg_2));')
// → Set { 'bg_1', 'bg_2' }

extract_css_variables('padding: 1rem;')
// → Set {}

has_css_variables
#

css_variable_utils.ts view source

(css: string): boolean

Checks if a CSS string contains any CSS variable references.
More efficient than extract_css_variables when you only need
to know if variables exist, not what they are.

`css`

CSS string to check

type string

returns

boolean

true if the string contains var(--*) patterns