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refactor(Player)!: Use AST-based JS extraction with side-effect safe code emission (#1052)

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* chore(deps): Add `meriyah`

* feat(utils): Implement AST-based JS extractors

* chore(utils): Remove old ast walker code

* fix(Player): Migrate js extraction logic

* chore(JsExtractor): Fix typo in tsdoc

* perf(JsAnalyzer): Simplify main AST analysis logic

* fix(JsAnalyzer): Change `break` to `return` in AST matching logic

* chore: Update docs

* chore: Don't export `PlayerInitializationOptions`

* chore(evaluate): Update error message to include doc link

* perf: Use a `for-loop` to find iife
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Luan
2025-10-12 09:08:51 -03:00
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docs/api/namespaces/JsHelpers/interfaces/AstVisitObject.md Normal file
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[youtubei.js](../../../README.md) / [JsHelpers](../README.md) / AstVisitObject
# Interface: AstVisitObject
## Methods
### enter()?
> `optional` **enter**(`node`, `parent`, `ancestors`): [`AstVisitResult`](../type-aliases/AstVisitResult.md)
Callback invoked when an AST node is entered.
#### Parameters
• **node**: `Node`
Current AST node being visited.
• **parent**: `null` \| `Node`
Parent of the current AST node, or null if it's the root.
• **ancestors**: `Node`[]
Array of ancestor nodes, starting from the root down to the parent.
#### Returns
[`AstVisitResult`](../type-aliases/AstVisitResult.md)
- `true` to skip traversing this node's children.
- `WALK_STOP` to halt the entire traversal.
- `void`/`undefined` to continue normal traversal.
#### Defined in
[src/utils/javascript/helpers.ts:39](https://github.com/LuanRT/YouTube.js/blob/af92984523f90200a18314b94478a2697c9deab0/src/utils/javascript/helpers.ts#L39)
***
### leave()?
> `optional` **leave**(`node`, `parent`, `ancestors`): [`AstVisitResult`](../type-aliases/AstVisitResult.md)
Callback invoked when an AST node is exited.
#### Parameters
• **node**: `Node`
Current AST node being exited.
• **parent**: `null` \| `Node`
Parent of the current AST node, or null if it's the root.
• **ancestors**: `Node`[]
Array of ancestor nodes, starting from the root down to the parent.
#### Returns
[`AstVisitResult`](../type-aliases/AstVisitResult.md)
- `WALK_STOP` to halt the entire traversal.
- `void`/`undefined` to continue normal traversal.
#### Defined in
[src/utils/javascript/helpers.ts:49](https://github.com/LuanRT/YouTube.js/blob/af92984523f90200a18314b94478a2697c9deab0/src/utils/javascript/helpers.ts#L49)