dump-ast

name	dump-ast
description	Parse JS code through OXC and display ESTree JSON AST. Use proactively when implementing codegen, transforms, or debugging to understand how OXC represents a specific JS/TS construct in its AST. MUST use this skill before writing any new AST node construction in builder.rs, before implementing a new codegen visitor, or when unsure how OXC represents a JS pattern (destructuring, spread, optional chaining, etc.). Also use when debugging AST mismatch issues or when porting a new Svelte feature that involves JS expression handling.
argument-hint	[js-code]
allowed-tools	Bash

Dump OXC AST: $ARGUMENTS

Parses JavaScript through OXC and displays the ESTree-compatible JSON AST.

just dump-ast '$ARGUMENTS'

Show the JSON output. If parsing fails:

• wrap in parentheses if OXC expects a statement: ($ARGUMENTS)
• try as module-level code if it's a declaration