function walkAST()

in src/rule-unused-fields.js [21:57]
35 lines of code
14 McCabe index (conditional complexity)

  function walkAST(node, ignoreLevel) {
    if (node.kind === 'Field' && !ignoreLevel) {
      if (hasPrecedingEslintDisableComment(node, ESLINT_DISABLE_COMMENT)) {
        return;
      }
      const nameNode = node.alias || node.name;
      fieldNames[nameNode.value] = nameNode;
    }
    if (node.kind === 'OperationDefinition') {
      if (
        node.operation === 'mutation' ||
        node.operation === 'subscription' ||
        hasPrecedingEslintDisableComment(node, ESLINT_DISABLE_COMMENT)
      ) {
        return;
      }
      // Ignore fields that are direct children of query as used in mutation
      // or query definitions.
      node.selectionSet.selections.forEach(selection => {
        walkAST(selection, true);
      });
      return;
    }
    for (const prop in node) {
      const value = node[prop];
      if (prop === 'loc') {
        continue;
      }
      if (value && typeof value === 'object') {
        walkAST(value);
      } else if (Array.isArray(value)) {
        value.forEach(child => {
          walkAST(child);
        });
      }
    }
  }