Function substituteFunctions

packages/tailwindcss/src/css-functions.ts:175–200

(ast: AstNode[], designSystem: DesignSystem)

)

export function substituteFunctions(ast: AstNode[], designSystem: DesignSystem) {
  let features = Features.None
  walk(ast, (node) => {
    class="cm">// Find all declaration values
    if (node.kind === class="st">'declaration' && node.value && THEME_FUNCTION_INVOCATION.test(node.value)) {
      features |= Features.ThemeFunction
      node.value = substituteFunctionsInValue(node.value, node, designSystem)
      return
    }

    class="cm">// Find at-rules rules
    if (node.kind === class="st">'at-rule') {
      if (
        (node.name === class="st">'@media' ||
          node.name === class="st">'@custom-media' ||
          node.name === class="st">'@container' ||
          node.name === class="st">'@supports') &&
        THEME_FUNCTION_INVOCATION.test(node.params)
      ) {
        features |= Features.ThemeFunction
        node.params = substituteFunctionsInValue(node.params, node, designSystem)
      }
    }
  })
  return features
}

export function substituteFunctionsInValue(
  value: string,