(of)

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

• Identifier: shorthand for (id)
• Pattern: shorthand for (id)
• (:kind) • (:ref) • (:text) • (arr) • (attr) • (bool) • (call) • (child) • (comp) • (export) • (fun) • (id) • (id+) • (import) • (jsx) • (mem) • (null) • (num) • (obj) • (of) • (prop) • (regex) • (regex+) • (str) • (str*) • (str+) • (tpl) • (tpl*) • (var) • (:into) • (:and) • (:or) • (:not) • (:replace) • (:capture)

args

• (arg)
• (:into) • (:and) • (:or) • (:not) • (:text) • (:kind) • (:replace) • (:capture)