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JS: Add React Native Worklets "worklet" directive as a KnownDirective #22307

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JS: Add React Native Worklets "worklet" directive as a KnownDirective #22307

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0d4c01e
Add React Native Reanimated worklet directive as KnownDirective
matinzd Aug 10, 2026
233c4d8
test: update
matinzd Aug 10, 2026
c755dae
chore: update test snapshot
matinzd Aug 10, 2026
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5 changes: 5 additions & 0 deletions javascript/ql/lib/change-notes/2026-08-10-worklet-directive.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
category: feature
---

- Added support for recognizing the React Native Worklets `"worklet"` directive as a known directive.
15 changes: 15 additions & 0 deletions javascript/ql/lib/semmle/javascript/Stmt.qll
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Original file line number Diff line number Diff line change
Expand Up @@ -475,6 +475,21 @@ module Directive {
class UseCacheDirective extends KnownDirective {
UseCacheDirective() { this.getDirectiveText().regexpMatch("use cache(:.*)?") }
}

/**
* A React Native Worklets worklet directive.
*
* Example:
*
* ```
* function myWorklet() {
* "worklet";
* }
* ```
*/
class WorkletDirective extends KnownDirective {
WorkletDirective() { this.getDirectiveText() = "worklet" }
}
}

/**
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36 changes: 19 additions & 17 deletions javascript/ql/test/library-tests/Directives/KnownDirective.expected
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Original file line number Diff line number Diff line change
@@ -1,20 +1,22 @@
| tst.js:1:1:1:13 | 'use strict'; | use strict |
| tst.js:2:1:2:10 | 'use asm'; | use asm |
| tst.js:3:1:3:9 | 'bundle'; | bundle |
| tst.js:4:1:4:13 | 'use server'; | use server |
| tst.js:5:1:5:13 | 'use client'; | use client |
| tst.js:6:1:6:11 | 'use memo'; | use memo |
| tst.js:7:1:7:14 | 'use no memo'; | use no memo |
| tst.js:8:1:8:12 | 'use cache'; | use cache |
| tst.js:9:1:9:20 | 'use cache: remote'; | use cache: remote |
| tst.js:10:1:10:21 | 'use ca ... ivate'; | use cache: private |
| tst.js:19:3:19:12 | 'use asm'; | use asm |
| tst.js:20:3:20:11 | 'bundle'; | bundle |
| tst.js:21:3:21:15 | 'use server'; | use server |
| tst.js:22:3:22:15 | 'use client'; | use client |
| tst.js:23:3:23:13 | 'use memo'; | use memo |
| tst.js:24:3:24:16 | 'use no memo'; | use no memo |
| tst.js:25:3:25:14 | 'use cache'; | use cache |
| tst.js:26:3:26:22 | 'use cache: remote'; | use cache: remote |
| tst.js:27:3:27:23 | 'use ca ... ivate'; | use cache: private |
| tst.js:34:5:34:17 | 'use strict'; | use strict |
| tst.js:4:1:4:10 | 'worklet'; | worklet |
| tst.js:5:1:5:13 | 'use server'; | use server |
| tst.js:6:1:6:13 | 'use client'; | use client |
| tst.js:7:1:7:11 | 'use memo'; | use memo |
| tst.js:8:1:8:14 | 'use no memo'; | use no memo |
| tst.js:9:1:9:12 | 'use cache'; | use cache |
| tst.js:10:1:10:20 | 'use cache: remote'; | use cache: remote |
| tst.js:11:1:11:21 | 'use ca ... ivate'; | use cache: private |
| tst.js:20:3:20:12 | 'use asm'; | use asm |
| tst.js:21:3:21:11 | 'bundle'; | bundle |
| tst.js:22:3:22:12 | 'worklet'; | worklet |
| tst.js:23:3:23:15 | 'use server'; | use server |
| tst.js:24:3:24:15 | 'use client'; | use client |
| tst.js:25:3:25:13 | 'use memo'; | use memo |
| tst.js:26:3:26:16 | 'use no memo'; | use no memo |
| tst.js:27:3:27:14 | 'use cache'; | use cache |
| tst.js:28:3:28:22 | 'use cache: remote'; | use cache: remote |
| tst.js:29:3:29:23 | 'use ca ... ivate'; | use cache: private |
| tst.js:36:5:36:17 | 'use strict'; | use strict |
2 changes: 2 additions & 0 deletions javascript/ql/test/library-tests/Directives/tst.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
'use strict'; // this is a directive
'use asm'; // and so is this
'bundle';// and this
'worklet';
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matinzd marked this conversation as resolved.
'use server';
'use client';
'use memo';
Expand All @@ -18,6 +19,7 @@ function f() {
'use\x20strict'; // this is a directive, though not a strict mode directive
'use asm'; // and so is this
'bundle';
'worklet';
'use server';
'use client';
'use memo';
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