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25 lines
513 B
Markdown
25 lines
513 B
Markdown
Visitor pattern implementation for Babel AST.
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### Example
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```rust
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// Visit all Identifier nodes in the Babel AST and change the optional field to
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// Some(true) for each of them.
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use swc_babel_visit::{VisitMut, VisitMutWith};
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use swc_babel_ast::{Identifier, File};
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struct Visitor;
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impl VisitMut for Visitor {
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fn visit_mut_identifier(&mut self, node: &mut Identifier) {
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node.optional = Some(true);
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}
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}
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let ast: File = get_babel_ast();
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let mut v = Visitor {};
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ast.visit_mut_with(&mut v);
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```
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