Function findNode

packages/tailwindcss/src/ast.ts:892–902

(ast: AstNode[], fn: (node: AstNode) => boolean)

}

function findNode(ast: AstNode[], fn: (node: AstNode) => boolean): AstNode[] | null {
  let foundPath: AstNode[] = []
  walk(ast, (node, ctx) => {
    if (fn(node)) {
      foundPath = ctx.path()
      foundPath.push(node)
      return WalkAction.Stop
    }
  })
  return foundPath
}

// Find out if a variable is either used directly or if any of the variables that depend on it are
// used