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[parser] Allow optional async methods (#10582)
* Add parsePostMemberNameModifiers to aync method * Add test
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packages/babel-parser/test/fixtures/typescript/class/async-optional-method/input.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| class A extends B { | ||
| async method?(val: string): Promise<void>; | ||
| } |
268 changes: 268 additions & 0 deletions
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packages/babel-parser/test/fixtures/typescript/class/async-optional-method/output.json
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