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The Babel Traverse module maintains the overall tree state, and is responsible for replacing, removing, and adding nodes

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"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.addComment = addComment;
exports.addComments = addComments;
exports.shareCommentsWithSiblings = shareCommentsWithSiblings;
var _t = require("@babel/types");
const {
  addComment: _addComment,
  addComments: _addComments
} = _t;
function shareCommentsWithSiblings() {
  if (typeof this.key === "string") return;
  const node = this.node;
  if (!node) return;
  const trailing = node.trailingComments;
  const leading = node.leadingComments;
  if (!trailing && !leading) return;
  const prev = this.getSibling(this.key - 1);
  const next = this.getSibling(this.key + 1);
  const hasPrev = Boolean(prev.node);
  const hasNext = Boolean(next.node);
  if (hasPrev) {
    if (leading) {
      prev.addComments("trailing", removeIfExisting(leading, prev.node.trailingComments));
    }
    if (trailing && !hasNext) prev.addComments("trailing", trailing);
  }
  if (hasNext) {
    if (trailing) {
      next.addComments("leading", removeIfExisting(trailing, next.node.leadingComments));
    }
    if (leading && !hasPrev) next.addComments("leading", leading);
  }
}
function removeIfExisting(list, toRemove) {
  if (!(toRemove != null && toRemove.length)) return list;
  const set = new Set(toRemove);
  return list.filter(el => {
    return !set.has(el);
  });
}
function addComment(type, content, line) {
  _addComment(this.node, type, content, line);
}
function addComments(type, comments) {
  _addComments(this.node, type, comments);
}

//# sourceMappingURL=comments.js.map