function isRemovedToken()

in packages/flow-remove-types/index.js [490:517]

• 20 lines of code
• 7 McCabe index (conditional complexity)

function isRemovedToken(context, token) {
  var removedNodes = context.removedNodes;
  var nodeIdx = removedNodes.length - 1;

  // Find the last removed node which could possibly contain this token.
  while (nodeIdx >= 0 && startOf(removedNodes[nodeIdx]) > startOf(token)) {
    nodeIdx--;
  }

  var node = removedNodes[nodeIdx];

  // This token couldn't be removed if not contained within the removed node.
  if (nodeIdx === -1 || endOf(node) < endOf(token)) {
    return false;
  }

  // Iterate through the tokens contained by the removed node to find a match.
  var tokens = context.ast.tokens;
  var tokenIdx = findTokenIndexAtStartOfNode(tokens, node);
  while (endOf(tokens[tokenIdx]) <= endOf(node)) {
    if (token === tokens[tokenIdx]) {
      return true;
    }
    tokenIdx++;
  }

  return false;
}