When implementing Angular syntax parsing, ensure robust handling of Angular-specific constructs by properly distinguishing AST node types and normalizing flexible syntax patterns.
For AST visitor keys, only include actual Node objects, not primitive values:
// Correct - empty array since name and value are strings, not nodes
angularLetDeclaration: [],
// Incorrect - includes non-node primitives
angularLetDeclaration: ["name", "value"],
For Angular control flow blocks, normalize whitespace in block names to handle flexible syntax:
// Should handle both:
@else if () {} // standard spacing
@else if () {} // flexible whitespace
// Implementation should normalize "else if" → "else if"
This ensures the parser correctly processes Angular’s flexible syntax while maintaining proper AST structure for tooling compatibility.
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