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📄 TSESTreeNode.ts

📊 Analysis Summary

Metric	Count
🔧 Functions	2
📦 Imports	4
📊 Variables & Constants	3
📑 Type Aliases	2

📚 Table of Contents

• Imports
• Variables & Constants
• Functions
• Type Aliases

🛠️ File Location:

📂 packages/scope-manager/tests/test-utils/serializers/TSESTreeNode.ts

📦 Imports

Name	Source
TSESTree	@typescript-eslint/types
NewPlugin	@vitest/pretty-format
AST_NODE_TYPES	@typescript-eslint/types
createIdGenerator	../../../src/ID

---

Variables & Constants

Name	Type	Kind	Value	Exported
EXCLUDED_KEYS	Set<string>	const	`new Set([
// prevent cycles
'parent',
// type is printed in front of the object
'type',
// locations are just noise
'loc',
'range',
])`	✗
SEEN_NODES	Map<Node, number>	const	new Map<Node, number>()	✗
serializer	NewPlugin	const	`{
serialize(node: Node): string {
if (node.type === AST_NODE_TYPES.Identifier) {
return Identifier<"${(node as Identifier).name}">;
}

const keys = Object.keys(node).filter(k => !EXCLUDED_KEYS.has(k));
if (keys.length === 0) {
  return node.type;
}

if (SEEN_NODES.has(node)) {
  return `${node.type}$${SEEN_NODES.get(node)}`;
}

const id = generator();
SEEN_NODES.set(node, id);
return `${node.type}$${id}`;

}, test(val): boolean { return !!( val && typeof val === 'object' && // make sure it's not one of the classes from the package Object.getPrototypeOf(val) === Object.prototype && 'type' in val && (val as TSESTree.Node).type in AST_NODE_TYPES ); }, }` | ✓ |

---

Functions

serialize(node: Node): string

Code

serialize(node: Node): string {
    if (node.type === AST_NODE_TYPES.Identifier) {
      return `Identifier<"${(node as Identifier).name}">`;
    }

    const keys = Object.keys(node).filter(k => !EXCLUDED_KEYS.has(k));
    if (keys.length === 0) {
      return node.type;
    }

    if (SEEN_NODES.has(node)) {
      return `${node.type}$${SEEN_NODES.get(node)}`;
    }

    const id = generator();
    SEEN_NODES.set(node, id);
    return `${node.type}$${id}`;
  }

• Parameters:
• node: Node
• Return Type: string
• Calls:
• Object.keys(node).filter
• EXCLUDED_KEYS.has
• SEEN_NODES.has
• SEEN_NODES.get
• generator
• SEEN_NODES.set

test(val: any): boolean

Code

test(val): boolean {
    return !!(
      val &&
      typeof val === 'object' &&
      // make sure it's not one of the classes from the package
      Object.getPrototypeOf(val) === Object.prototype &&
      'type' in val &&
      (val as TSESTree.Node).type in AST_NODE_TYPES
    );
  }

• Parameters:
• val: any
• Return Type: boolean
• Calls:
• Object.getPrototypeOf
• Internal Comments:

  // make sure it's not one of the classes from the package (x4)
  

---

Type Aliases

Node

type Node = { type: AST_NODE_TYPES } & Record<string, unknown>;

Identifier

type Identifier = { name: string; type: AST_NODE_TYPES.Identifier } & Node;

---