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fix(parser): add attachComment to ParserOptions type #13657

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merged 1 commit into from Aug 9, 2021
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fix(parser): add attachComment to ParserOptions type #13657

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11 changes: 11 additions & 0 deletions packages/babel-parser/typings/babel-parser.d.ts
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Expand Up @@ -48,6 +48,17 @@ export interface ParserOptions {
*/
allowUndeclaredExports?: boolean;

/**
* By default, Babel attaches comments to adjacent AST nodes.
* When this option is set to false, comments are not attached.
* It can provide up to 30% performance improvement when the input code has many comments.
* @babel/eslint-parser will set it for you.
* It is not recommended to use attachComment: false with Babel transform,
* as doing so removes all the comments in output code, and renders annotations such as
* /* istanbul ignore next *\/ nonfunctional.
*/
attachComment?: boolean;

/**
* By default, Babel always throws an error when it finds some invalid code.
* When this option is set to true, it will store the parsing error and
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