(mem)

property access

(mem prop? obj?)

Where:

1. prop: property name or computed key (the b in a.b or the expr in a[expr]) *
2. obj: value being accessed (the a in a.b) *

Matching:

1. dot access, e.g. a.b
2. computed access, e.g. a[expr]
3. private fields, e.g. a.#field

Examples

Remove a deprecated debug flag by finding reads of config.debug.

(mem debug config)

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

if (config.debug) { log("debug") }
if (config.verbose) { log("debug") }
if (settings.debug) { log("debug") }

---

Migrate storage keys by finding direct access to localStorage["token"].

(mem (comp (str "token")) localStorage)

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

const token = localStorage["token"]
const session = localStorage["session"]
const token2 = sessionStorage["token"]

---

Audit inline styling by finding uses of the style property.

(mem style)

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

button.style.color = "red"
card.style = {}
styles.theme = "dark"

---

Arguments

prop

• Identifier: shorthand for (id)
• Pattern: shorthand for (id)
• (id)
• (comp)
• (:into) • (:and) • (:or) • (:not) • (:text) • (:kind) • (:replace) • (:capture)

obj

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