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docs(parser): clarify ecmaVersion usage #2899

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Dec 23, 2020
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docs(parser): clarify ecmaVersion usage #2899

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2 changes: 2 additions & 0 deletions packages/parser/README.md
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Expand Up @@ -99,6 +99,8 @@ Accepts any valid ECMAScript version number:
- A version: es3, es5, es6, es7, es8, es9, es10, es11, ..., or
- A year: es2015, es2016, es2017, es2018, es2019, es2020, ...

The value **must** be a number - so do not include the `es` prefix.

Specifies the version of ECMAScript syntax you want to use. This is used by the parser to determine how to perform scope analysis, and it affects the default

### `parserOptions.jsxPragma`
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