feat: track target nodes with TypeScript AST

[MengLinMaker]

Useful tool for exploring TypeScript AST:

TS AST viewer for this example:

const _Cache = Cache
const cache = new _Cache()
cache.add("test.html")

const keys = cache.keys()
const _keys =  new Cache().keys()
_keys.then((request) =>{
    const len = request.length
})

---

Types to infer

Instance

VariableDeclaration + PropertyAccessExpression:

• Example: const cache = new Cache()
• Type: Cache

Method

PropertyAccessExpression:

• Example: cache.add("test.html")
• Type: { (request: RequestInfo | URL): Promise<void>; (request: RequestInfo | URL): Promise<void>; }
• Note: Type can be complex

---

Types to ignore

Class

NewExpression + VariableDeclaration:

• Example: const _Cache = Cache
• Type: { new (): Cache; prototype: Cache; }
• Note: Type can be complex

[MengLinMaker]

Potential solution

Depth here refers to the depth in compat data json.

Depth 1

Class instantiations

1. Detect NewExpression Node of Type <Class>

Note: This will detect any alias to class. But will fail when a custom class name is same as API class.

Global instances

2. Detect Identifier Node of Symbol <instance>

Depth 2

Class property access

1. Detect any Node of Type <Class>
2. If parent Node is PropertyAccessExpression and Symbol <Property>

Note: Need to remove _static from <Property>_static

Limitations:

• Type and naming clashes (No solution. Probably bad idea to override globals.)

Todo:

Depth 2

Event listeners - won't be used on server side?

• <EventName>_event in addEventListener("<EventName>", callback)
• Edge case only occurs for EventTarget, probably needs manual implementation.

Depth 3 and beyond

Method parameters - another rare use case

• <ParamName>_parameter or <ParamName>_parameter_optional or object <ParamObjectName>_<ParamObjectPropertyName>_parameter

CompressionStream and DecompressionStream

• deflate deflate-raw gzip options

[MengLinMaker]

Class instantiations solved for issue #45 in PR #47

[MengLinMaker]

Class property access solved for issue #46 in PR #48