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Skip mutating the 'ignore' flag when printing.

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This commit is contained in:
Logan Smyth 2016-07-16 15:17:46 -07:00
parent 3cc38a0063
commit 1d0ff341fd
1 changed files with 6 additions and 1 deletions
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7
packages/babel-generator/src/printer.js
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@ -20,6 +20,7 @@ export default class Printer {
_printedCommentStarts: Object;
_parenPushNewlineState: ?Object;
_printedComments: WeakSet = new WeakSet();
/**
* Increment indent size.
@ -484,8 +485,12 @@ export default class Printer {
_printComment(comment) {
if (!this._shouldPrintComment(comment)) return;
// Some plugins use this to mark comments as removed using the AST-root 'comments' property,
// where they can't manually mutate the AST node comment lists.
if (comment.ignore) return;
comment.ignore = true;
if (this._printedComments.has(comment)) return;
this._printedComments.add(comment);
if (comment.start != null) {
if (this._printedCommentStarts[comment.start]) return;