(of) - JavaScript

constructor calls using new

(of callee args?)

Where:

1. callee: constructor being instantiated (the Foo in new Foo()) *
2. args: constructor arguments (use (arg ...) to match by position or value) *

Matching:

1. constructor calls, e.g. new Foo()
2. constructor calls without arguments, e.g. new Foo
3. member constructors, e.g. new Api.Client()

Behavior

• Only matches new expressions, not plain calls like Foo().

Examples

Find error constructions with legacy messages to standardize.

(of Error (arg 1 (str /deprecated/i)))

Selects in lines { 1 } but not in { 2, 1 }:

throw new Error("Deprecated API")
throw new Error(err)
throw Error("Deprecated API")

---

Locate URL constructions that still hardcode http.

(of URL (arg 1 (str /http:\/\//)))

Selects in lines { 1 } but not in { 2, 3 }:

const url1 = new URL("http://example.com")
const url2 = new URL("https://example.com")
const url3 = new URL("/path", base)

---

Audit usages of a specific client constructor before renaming.

(of (mem Client Api))

Selects in lines { 1 } but not in { 2, 3 }:

const client1 = new Api.Client()
const client2 = new Api.Server()
const client3 = new Client()

---

Arguments

callee

1. Identifier: shorthand for (id)
   
2. Pattern: shorthand for (id)
   
3. (:into)
4. (:nearest)
5. (:and)
6. (:or)
7. (:not)
8. (:text)
9. (:kind)
10. (:replace)
11. (:replace-in)
12. (:capture)
13. (:ref)
14. (arr)
15. (attr)
16. (bool)
17. (call)
18. (child)
19. (comp)
20. (export)
21. (fun)
22. (id)
23. (id+)
24. (import)
25. (jsx)
26. (mem)
27. (null)
28. (num)
29. (obj)
30. (of)
31. (prop)
32. (regex)
33. (regex+)
34. (str)
35. (str*)
36. (str+)
37. (tpl)
38. (tpl*)
39. (var)

args

1. (arg)
   
2. (:into)
3. (:nearest)
4. (:and)
5. (:or)
6. (:not)
7. (:text)
8. (:kind)
9. (:replace)
10. (:replace-in)
11. (:capture)