(fun) - JavaScript

function definitions

(fun name? args? kind?)

Where:

1. name: function name (providing a name excludes arrow functions) *
2. args: function parameters *
3. kind: function modifier to match *

Matching:

1. declarations, e.g. function x() {}
2. arrow functions, e.g. () => {}
3. expressions, e.g. (function() {})
4. generators, e.g. function* x() {}

Examples

Audit async functions before changing error handling behavior.

(fun _ _ (is async))

Selects in lines { 1, 2 } but not in { 3, 4 }:

async function loadUser() {}
const refresh = async () => {}
function loadUserSync() {}
function* ids() {}

---

Find APIs that already accept an AbortSignal so they can be wired to cancellation.

(fun _ (arg _ (id signal)))

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

function request(url, signal) {}
const withSignal = (signal, url) => {}
function withoutSignal(url) {}

---

Locate generator utilities before replacing them with async iterators.

(fun _ _ (is generator))

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

function* ids() { yield 1 }
const makeIds = function* () { yield 2 }
async function fetchIds() {}

---

Arguments

name

1. Identifier: shorthand for (id)
   
2. Pattern: shorthand for (id)
   
3. (id)
   
4. (:into)
5. (:nearest)
6. (:and)
7. (:or)
8. (:not)
9. (:text)
10. (:kind)
11. (:replace)
12. (:replace-in)
13. (:capture)

args

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

kind

1. (is)
   
2. (:kind)
3. (:and)
4. (:not)
5. (:or)

Does NOT support: Refinement — Replacement