print typescript ast

ast.ts

import {
	Node,
	ScriptTarget,
	SourceFile,
	SyntaxKind,
	createSourceFile,
} from 'typescript'
import { readFile } from 'node:fs/promises'

const rec = (node: Node, src: SourceFile, d: number) => {
	console.log(
		`${'  '.repeat(d)}${SyntaxKind[node.kind]}: ${node.getText(src)}`,
	)

	node.forEachChild(ch => rec(ch, src, d + 1))
}

;(async () => {
	const filename = __filename
	const src = (await readFile(filename)).toString()

	const sourceFile = createSourceFile(
		filename,
		src,
		ScriptTarget.Latest,
	)

	rec(sourceFile, sourceFile, 0)
})()