From 0af5363804a2e37fb20dc0a0944e3713b95abd85 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 13:58:23 +0000
Subject: [PATCH 01/13] Accept thread arguments filter

---
 lib/cli.js  | 6 ++++++
 lib/fork.js | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/cli.js b/lib/cli.js
index 4de8cd57d..2f17a8442 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -388,9 +388,15 @@ export default async function loadCli() { // eslint-disable-line complexity
 		exit(error.message);
 	}
 
+	const workerThreads = combined.workerThreads !== false;
+
 	let nodeArguments;
 	try {
 		nodeArguments = normalizeNodeArguments(conf.nodeArguments, argv['node-arguments']);
+		nodeArguments ??= process.execArgv;
+		if (workerThreads && conf.threadArgumentsFilter) {
+			nodeArguments = nodeArguments.filter(conf.threadArgumentsFilter);
+		}
 	} catch (error) {
 		exit(error.message);
 	}
diff --git a/lib/fork.js b/lib/fork.js
index 8317774ff..b2b2405e6 100644
--- a/lib/fork.js
+++ b/lib/fork.js
@@ -60,7 +60,7 @@ const createWorker = (options, execArgv) => {
 	};
 };
 
-export default function loadFork(file, options, execArgv = process.execArgv) {
+export default function loadFork(file, options, execArgv) {
 	let finished = false;
 
 	const emitter = new Emittery();

From fb1539f757e580f98a708fea81873dc0603d277f Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 15:27:19 +0000
Subject: [PATCH 02/13] Validate threadArgumentsFilter

---
 lib/load-config.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/load-config.js b/lib/load-config.js
index b6526a3c2..68d2f265b 100644
--- a/lib/load-config.js
+++ b/lib/load-config.js
@@ -157,6 +157,10 @@ export async function loadConfig({configFile, resolveFrom = process.cwd(), defau
 		...defaults, nonSemVerExperiments: {}, ...fileConf, ...packageConf, projectDir, configFile,
 	};
 
+	if ('threadArgumentsFilter' in config && typeof config.threadArgumentsFilter !== 'function') {
+		throw new Error(`threadArgumentsFilter from ${fileForErrorMessage} must be a function`);
+	}
+
 	const {nonSemVerExperiments: experiments} = config;
 	if (!isPlainObject(experiments)) {
 		throw new Error(`nonSemVerExperiments from ${fileForErrorMessage} must be an object`);

From 7146c5251517a3f91445a0fa443c276b381434cb Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 21:50:50 +0000
Subject: [PATCH 03/13] Test invalid threadArgumentsFilter

---
 test-tap/fixture/load-config/non-function/ava.config.js | 3 +++
 test-tap/fixture/load-config/non-function/package.json  | 3 +++
 test/config/loader.js                                   | 2 ++
 3 files changed, 8 insertions(+)
 create mode 100644 test-tap/fixture/load-config/non-function/ava.config.js
 create mode 100644 test-tap/fixture/load-config/non-function/package.json

diff --git a/test-tap/fixture/load-config/non-function/ava.config.js b/test-tap/fixture/load-config/non-function/ava.config.js
new file mode 100644
index 000000000..749214339
--- /dev/null
+++ b/test-tap/fixture/load-config/non-function/ava.config.js
@@ -0,0 +1,3 @@
+export default {
+	threadArgumentsFilter: [],
+};
diff --git a/test-tap/fixture/load-config/non-function/package.json b/test-tap/fixture/load-config/non-function/package.json
new file mode 100644
index 000000000..bedb411a9
--- /dev/null
+++ b/test-tap/fixture/load-config/non-function/package.json
@@ -0,0 +1,3 @@
+{
+	"type": "module"
+}
diff --git a/test/config/loader.js b/test/config/loader.js
index 74c43ffbc..5a128e76f 100644
--- a/test/config/loader.js
+++ b/test/config/loader.js
@@ -117,6 +117,8 @@ test.serial('throws an error if a .js config file has no default export', notOk(
 
 test.serial('throws an error if a config file contains `ava` property', notOk('contains-ava-property'));
 
+test.serial('throws an error if a config file contains a non-function `threadArgumentsFilter` property', notOk('non-function'));
+
 test.serial('throws an error if a config file contains a non-object `nonSemVerExperiments` property', notOk('non-object-experiments'));
 
 test.serial('throws an error if a config file enables an unsupported experiment', notOk('unsupported-experiments'));

From d2cfdbb0f857e06f5eb651e7c7953e9d27422e68 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 21:52:00 +0000
Subject: [PATCH 04/13] Normalize threadArgumentsFilter usage

Conforms to eslint rule for safe Array#filter usage.
---
 lib/cli.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/cli.js b/lib/cli.js
index 2f17a8442..8fac5fcf7 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -394,8 +394,9 @@ export default async function loadCli() { // eslint-disable-line complexity
 	try {
 		nodeArguments = normalizeNodeArguments(conf.nodeArguments, argv['node-arguments']);
 		nodeArguments ??= process.execArgv;
-		if (workerThreads && conf.threadArgumentsFilter) {
-			nodeArguments = nodeArguments.filter(conf.threadArgumentsFilter);
+		if (workerThreads && 'threadArgumentsFilter' in conf) {
+			const {threadArgumentsFilter: filter} = conf;
+			nodeArguments = nodeArguments.filter(argument => filter(argument));
 		}
 	} catch (error) {
 		exit(error.message);

From 05b9b21115709769015e69ee6c93c3a69ad20ae6 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 21:56:11 +0000
Subject: [PATCH 05/13] Save test snapshot

---
 test/config/snapshots/loader.js.md   |   6 ++++++
 test/config/snapshots/loader.js.snap | Bin 594 -> 625 bytes
 2 files changed, 6 insertions(+)

diff --git a/test/config/snapshots/loader.js.md b/test/config/snapshots/loader.js.md
index 499926429..7074ece76 100644
--- a/test/config/snapshots/loader.js.md
+++ b/test/config/snapshots/loader.js.md
@@ -40,6 +40,12 @@ Generated by [AVA](https://avajs.dev).
 
     'Encountered ’ava’ property in ava.config.js; avoid wrapping the configuration'
 
+## throws an error if a config file contains a non-function `threadArgumentsFilter` property
+
+> error message
+
+    'threadArgumentsFilter from ava.config.js must be a function'
+
 ## throws an error if a config file contains a non-object `nonSemVerExperiments` property
 
 > error message
diff --git a/test/config/snapshots/loader.js.snap b/test/config/snapshots/loader.js.snap
index 83344ffc9c7ecd858f0f0c67af9dad1e56a16a00..8b209f7cd80a66277d79d6cf3c947ce2e22ee1fe 100644
GIT binary patch
literal 625
zcmV-%0*?JbRzV<BZeeh9Xm4~Nb~6eC03dU9-7_q7&!_|KHu9(+OL)X_VdLa&wR_hW
zbn9aa^dE}|00000000A(mBDh;Fc5~*VHnQ5!QKI%p@jov5(YSR%5>mF*7iD<EAMI~
zIZbZm${X}ZAFWRUcI*%*!byCTNBe*O>euRb7Hdgv+^+}n%4=G_@VS*+2gpFyiUpNH
zEIx-sI8$>6XbFrZN9>hjG%gqKem<lrdi?h3$>`ar{?49`o}XQeg)^-ZuXx_>uPk~c
z42l647_AqhqSi~nU~+?ViV7!88e`JsnxQ1;a84cL>y}YvZPlsL1Y(-XIX3VWyUG}`
zo>HKtCw5ABANXqzcsiC!r@-Pt3#M&#$dslFP##>~{LgVg5EbqvL`mU5EJS7D{>con
ze+cv!H$s?ru`5W0Tti{WSC#?6XjBXm7nB6re%W&|p0;I5^10OZ+djmrou-$S`;W$u
zh4Uc`8}zm6LG;f(^tS=NV4=F{UAMA|6MvxXVdh$6>x`T1us})~R=QK(XTIt&PbN*l
zIxuz4dk)S+4R7LuJ1WQIJ)D^uJQ4P&*ue}JI0IwFkoBv5^dCL+%Lyk^u_yaC9glbS
zxWLD|`_1;fTY3Sw5S7BMMPq8SKBxZ09<uTMcpC^T{Hi-xnEBiirtj^%Dv7<DD(%S*
z`P>;q!Tpd~DMJSo*T-{As;*CU)P{G)!dFyYlbtLLS=B%d+4<PB^Cq-?(9JQ|dU!I`
zW{5G?6d11^#KF9Uz@zP20TXIHPY^<ir(T=pDeK;wW_lm>u6^m*cz5EvwzZNJE`<CC
L6!3HDhX()vw!Jc~

literal 594
zcmV-Y0<HZ)RzV<BZeeh9Xm4~Nb~6eC0K(Z`Mlv3I!Q`XRecIZ-b~fKk8%>#|y0crf
zAPvoi?H`K>00000000A(mCtU|KoG`LA;g(Cm^+X&G;kqG5OAuBDsE(KkK=9EJJ#;H
zO>S`H5jfIE<4HQ}KT+H)PMU*bdo?q^@7tO6-#pQr-nifQ<dxU7dF2bscMi}1S<4nw
z4hj1LQZ~6-%Yr4SEIBe>IfIoe*t=i%S%x0Je||Q3F$ur3=aZLbv$@1*m3n2?U3_iP
zD>k4E;4Mzum(%M|FM|rx8(fn-vLTHL>9S=g$vIi*8Q*q{g4QNjDowyulexeKzBaC|
zDz=_7pp7TvWbqLA+W>eu=UQiA*n?)wy6lik`WYw>5*pSEyd@CI*Dy^5T>z)0{O`()
zv44#Ci@QRYdbV50m|R0)$=6n_f=Z)U#>q9M5!){YD(1^BO-a7sAiwh=**-G8tlfWV
zj7c~jldwZ?s~$!FGC+SH;fp2;ruS~;wMqRE+vCik#@-$`y<-?M%CXjc<wNGn0rO(f
zBn%A``h1|^JZ5;)KKQ80Dg7SrnE)>LUd(Z@l6otdPp-)N?IHS)0s6(lq+A<MR=VTg
z&p#3@*IoF*l+NUlRR(t!t15`~1q}y#OvcseGEla`yy>=jCHI$9UXfjFgiDoj^tdsR
zp9Uh|#lj)CT*fvhp}=>12*&3)h#`ZCrpRH`Lmb_m82EHQS44zrrw<`k@u^ML9Q^(1
g+?;hMeFeS_WPEtyS77grRE!}%0O7-DwzUQT0O=MZ00000


From 6ae4ab4bc5ca59878e75dddf7953396d4bcbb3a7 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 22:37:54 +0000
Subject: [PATCH 06/13] Test fork thread with explicit execArgv

Necessary due to default being removed, in favor of
explicit filtered execArgv constructed at higher level.
---
 test-tap/api.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test-tap/api.js b/test-tap/api.js
index e65eb5982..6820efd2d 100644
--- a/test-tap/api.js
+++ b/test-tap/api.js
@@ -1,5 +1,6 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import process from 'node:process';
 import {fileURLToPath} from 'node:url';
 
 import ciInfo from 'ci-info';
@@ -20,6 +21,7 @@ async function apiCreator(options = {}) {
 	options.globs = normalizeGlobs({
 		files: options.files, ignoredByWatcher: options.watchMode?.ignoreChanges, extensions: options.extensions, providers: [],
 	});
+	options.nodeArguments = process.execArgv;
 	const instance = new Api(options);
 
 	return instance;

From 94be613762a98ab81bbe901071f7fbe401785797 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 23:23:53 +0000
Subject: [PATCH 07/13] Test threadArgumentsFilter filters for thread

---
 .../thread-arguments-filter/package.json        |   3 +++
 .../thread-arguments-filter.config.mjs          |   9 +++++++++
 .../fixtures/thread-arguments-filter/thread.js  |   7 +++++++
 test/node-arguments/snapshots/test.js.md        |  11 +++++++++++
 test/node-arguments/snapshots/test.js.snap      | Bin 440 -> 507 bytes
 test/node-arguments/test.js                     |  10 ++++++++++
 6 files changed, 40 insertions(+)
 create mode 100644 test/node-arguments/fixtures/thread-arguments-filter/package.json
 create mode 100644 test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
 create mode 100644 test/node-arguments/fixtures/thread-arguments-filter/thread.js

diff --git a/test/node-arguments/fixtures/thread-arguments-filter/package.json b/test/node-arguments/fixtures/thread-arguments-filter/package.json
new file mode 100644
index 000000000..bedb411a9
--- /dev/null
+++ b/test/node-arguments/fixtures/thread-arguments-filter/package.json
@@ -0,0 +1,3 @@
+{
+	"type": "module"
+}
diff --git a/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs b/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
new file mode 100644
index 000000000..aa7dcb44c
--- /dev/null
+++ b/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
@@ -0,0 +1,9 @@
+const processOnly = new Set(['--allow-natives-syntax']);
+
+export default {
+	nodeArguments: [
+		'--throw-deprecation',
+		'--allow-natives-syntax',
+	],
+	threadArgumentsFilter: argument => !processOnly.has(argument),
+};
diff --git a/test/node-arguments/fixtures/thread-arguments-filter/thread.js b/test/node-arguments/fixtures/thread-arguments-filter/thread.js
new file mode 100644
index 000000000..9d65540bb
--- /dev/null
+++ b/test/node-arguments/fixtures/thread-arguments-filter/thread.js
@@ -0,0 +1,7 @@
+import test from 'ava';
+
+test('exec arguments filtered', t => {
+	t.plan(2);
+	t.truthy(process.execArgv.includes('--throw-deprecation'));
+	t.falsy(process.execArgv.includes('--allow-natives-syntax'));
+});
diff --git a/test/node-arguments/snapshots/test.js.md b/test/node-arguments/snapshots/test.js.md
index 12555650a..78234130b 100644
--- a/test/node-arguments/snapshots/test.js.md
+++ b/test/node-arguments/snapshots/test.js.md
@@ -15,6 +15,17 @@ Generated by [AVA](https://avajs.dev).
       },
     ]
 
+## `threadArgumentsFilter` configuration filters arguments for worker thread
+
+> tests pass
+
+    [
+      {
+        file: 'thread.js',
+        title: 'exec arguments filtered',
+      },
+    ]
+
 ## detects incomplete --node-arguments
 
 > fails with message
diff --git a/test/node-arguments/snapshots/test.js.snap b/test/node-arguments/snapshots/test.js.snap
index c8e204a5149c2e10bab9fc13bc365185e521c98d..ddb06dae2df1d6b531c99918bec72b6811b6f5c5 100644
GIT binary patch
literal 507
zcmV<X0R;X*RzV<BZeeh9Xm4~Nb~6eC0PxRW+3a7*-okkG3%iZGV^4?Eo51n#eNM*Y
z7bEA27axlV00000000B6lh1C`KoG`f5?uZXB~g($A&tZloC9Yr6%rB$)GNnqcE|Q6
z>s@PSO<IWy5^unf6TR>%70<zgAjfsoCPF>5KJ9uv<L~=@v%iX^3wkZzFF4uc_>3AQ
z!iIb>Oe&Ub%{~dGK${TP9L0)PjZ`7Yw+mxbQlI~h;URPnKElx(0C)=k$9Ocu>?B5Y
zjyS9)lL_DxKm>e>_--f~mjF-$z|W!Z=ybVaop7{UPN!4AXMiKX2^{0-IgSCd89pei
z<6$%FROdU@^Ofv<oo!7HyVrci`kG1WwQCIv<$0=N*yM(r$XX>EJUg{yw@NHYwu}Z~
z9~Y^Ltjx*K=7V*K<AQYXg)Q5-EvI7pR<8Z62=R(3^&Jk$UfvtoA9p1CxR-bv(HDC}
zd)I9KOYfE8#JXo6>c(+m%JZ8s9&-7*<C4J){rk|mZekNPDhktLzr%vQDA)3wKB+a6
zw2?_UN0OrTWtRz)cA*=4<qa*BUW-#waevfy2Rg*aI=S<C?<E$>I-!kC71b=FO5R<e
xj+E@*pdyC)Y9<a1{kgZGf8R0amp94fo$S1qeOvfhH_dVo^*;^#>S|*I002c)_6q<2

literal 440
zcmV;p0Z0BpRzV<BZeeh9Xm4~Nb~6eC09vF=0dItoNiqjjS`0uj)CzQR>NaufRU0>m
z+G+H1OCO5}00000000B6Qn60MFc9^%1P}<N6|6{>7$F^)Sr9W~Wvmll61R?B`5f9x
zEQrrwq6`1Rckm%Nty0l;U;s;&@8rAFd+*+Ro@$$o>2-l#d5tqZ5kx4tu@bp(MO~rs
z#J%NH>&ECvkr5Lrt*4iTl){V0uP!@a&4EMcT!r^K+*8=^Lv-t$m;<y?9LEff7yyG~
zfSb0dTZFd?_pNQ*e@I7|dFZUeUa!aCgh7Wv9BMje&}9(yVJ}x2+oa#1PS&UgBigEt
zmL%Kk5@(qGAgN5IYl*~@#Fx%a6NwXtnefUQ)FMSa@<^eu(Wn*dLZT1&mfg0R=#Yi}
zO(46PJ+C#3SRc%tt#zZh52GC+A8t<=@+YBd9PoQFMozU0%h8&XcghqLI3UloZ5Aht
z<f#ZN)q+Y~ebvoJW?dlT^?b16;&P!h@u~79uaHO-xHf@9A!*wKxwBQ6VscgN68ii%
i6MX#91m~N|B@OIk1^YKcM2*L3XVu@(i!9G20{{SaOwN4(

diff --git a/test/node-arguments/test.js b/test/node-arguments/test.js
index 7b1c3a5fe..ac510ce3e 100644
--- a/test/node-arguments/test.js
+++ b/test/node-arguments/test.js
@@ -13,6 +13,16 @@ test('passed node arguments to workers', async t => {
 	t.snapshot(result.stats.passed, 'tests pass');
 });
 
+test('`threadArgumentsFilter` configuration filters arguments for worker thread', async t => {
+	const options = {
+		cwd: cwd('thread-arguments-filter'),
+	};
+
+	const result = await fixture(['--config=thread-arguments-filter.config.mjs', 'thread.js'], options);
+
+	t.snapshot(result.stats.passed, 'tests pass');
+});
+
 test('detects incomplete --node-arguments', async t => {
 	const options = {
 		cwd: cwd('node-arguments'),

From e39f509a4f2aa21057920278117faa0f8c12fe72 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 23:34:34 +0000
Subject: [PATCH 08/13] Test threadArgumentsFilter ignored for process

---
 .../fixtures/thread-arguments-filter/process.js |   7 +++++++
 test/node-arguments/snapshots/test.js.md        |  11 +++++++++++
 test/node-arguments/snapshots/test.js.snap      | Bin 507 -> 547 bytes
 test/node-arguments/test.js                     |  10 ++++++++++
 4 files changed, 28 insertions(+)
 create mode 100644 test/node-arguments/fixtures/thread-arguments-filter/process.js

diff --git a/test/node-arguments/fixtures/thread-arguments-filter/process.js b/test/node-arguments/fixtures/thread-arguments-filter/process.js
new file mode 100644
index 000000000..b831c723a
--- /dev/null
+++ b/test/node-arguments/fixtures/thread-arguments-filter/process.js
@@ -0,0 +1,7 @@
+import test from 'ava';
+
+test('exec arguments unfiltered', t => {
+	t.plan(2);
+	t.truthy(process.execArgv.includes('--throw-deprecation'));
+	t.truthy(process.execArgv.includes('--allow-natives-syntax'));
+});
diff --git a/test/node-arguments/snapshots/test.js.md b/test/node-arguments/snapshots/test.js.md
index 78234130b..05b21577f 100644
--- a/test/node-arguments/snapshots/test.js.md
+++ b/test/node-arguments/snapshots/test.js.md
@@ -26,6 +26,17 @@ Generated by [AVA](https://avajs.dev).
       },
     ]
 
+## `threadArgumentsFilter` configuration ignored for worker process
+
+> tests pass
+
+    [
+      {
+        file: 'process.js',
+        title: 'exec arguments unfiltered',
+      },
+    ]
+
 ## detects incomplete --node-arguments
 
 > fails with message
diff --git a/test/node-arguments/snapshots/test.js.snap b/test/node-arguments/snapshots/test.js.snap
index ddb06dae2df1d6b531c99918bec72b6811b6f5c5..853b95b6d4797918705beee6842fd07700837d76 100644
GIT binary patch
literal 547
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zhaI9#)ujJP@8$o|Gr9AD^ft3Hct!jdJN`Nvv@ZujJ6&tsN9|FETIKd~d!i|lYCP+U
z(o!T$)0_6+Me}ikCV`P~uY6_eKRse80~1cV87BBa+KR^bRxSv+3WU;H<QR<0YcCTj
z>+5kLoyMtD3$~JH)Ergyf$|}ciuQ8c)DkjjEaTF|85YDWbJ~oa+6dg8JX!F?+6}t}
l{XAN)zaQA^$2ZBPwd}N!y|4XA?P%U<^&iq7$0(Zx002ZA3WWdw

literal 507
zcmV<X0R;X*RzV<BZeeh9Xm4~Nb~6eC0PxRW+3a7*-okkG3%iZGV^4?Eo51n#eNM*Y
z7bEA27axlV00000000B6lh1C`KoG`f5?uZXB~g($A&tZloC9Yr6%rB$)GNnqcE|Q6
z>s@PSO<IWy5^unf6TR>%70<zgAjfsoCPF>5KJ9uv<L~=@v%iX^3wkZzFF4uc_>3AQ
z!iIb>Oe&Ub%{~dGK${TP9L0)PjZ`7Yw+mxbQlI~h;URPnKElx(0C)=k$9Ocu>?B5Y
zjyS9)lL_DxKm>e>_--f~mjF-$z|W!Z=ybVaop7{UPN!4AXMiKX2^{0-IgSCd89pei
z<6$%FROdU@^Ofv<oo!7HyVrci`kG1WwQCIv<$0=N*yM(r$XX>EJUg{yw@NHYwu}Z~
z9~Y^Ltjx*K=7V*K<AQYXg)Q5-EvI7pR<8Z62=R(3^&Jk$UfvtoA9p1CxR-bv(HDC}
zd)I9KOYfE8#JXo6>c(+m%JZ8s9&-7*<C4J){rk|mZekNPDhktLzr%vQDA)3wKB+a6
zw2?_UN0OrTWtRz)cA*=4<qa*BUW-#waevfy2Rg*aI=S<C?<E$>I-!kC71b=FO5R<e
xj+E@*pdyC)Y9<a1{kgZGf8R0amp94fo$S1qeOvfhH_dVo^*;^#>S|*I002c)_6q<2

diff --git a/test/node-arguments/test.js b/test/node-arguments/test.js
index ac510ce3e..417b98aef 100644
--- a/test/node-arguments/test.js
+++ b/test/node-arguments/test.js
@@ -23,6 +23,16 @@ test('`threadArgumentsFilter` configuration filters arguments for worker thread'
 	t.snapshot(result.stats.passed, 'tests pass');
 });
 
+test('`threadArgumentsFilter` configuration ignored for worker process', async t => {
+	const options = {
+		cwd: cwd('thread-arguments-filter'),
+	};
+
+	const result = await fixture(['--config=thread-arguments-filter.config.mjs', '--no-worker-threads', 'process.js'], options);
+
+	t.snapshot(result.stats.passed, 'tests pass');
+});
+
 test('detects incomplete --node-arguments', async t => {
 	const options = {
 		cwd: cwd('node-arguments'),

From fdb229b8d4b3ea6b4107743977181a0be90a16b5 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Mon, 22 Jul 2024 23:42:02 +0000
Subject: [PATCH 09/13] Document threadArgumentsFilter

---
 docs/06-configuration.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/docs/06-configuration.md b/docs/06-configuration.md
index 31531fe29..622c6579e 100644
--- a/docs/06-configuration.md
+++ b/docs/06-configuration.md
@@ -337,3 +337,18 @@ These may also export a function which is then invoked, and can receive argument
 The `nodeArguments` configuration may be used to specify additional arguments for launching worker processes. These are combined with `--node-arguments` passed on the CLI and any arguments passed to the `node` binary when starting AVA.
 
 [CLI]: ./05-command-line.md
+
+## Thread arguments filter
+
+In a config file only, `threadArgumentsFilter` may provide a function used for filtering `nodeArguments` sent to worker threads. This enables excluding arguments that throw if sent to a thread. The filter is ignored by worker processes.
+
+```js
+const processOnly = new Set([
+	'--allow-natives-syntax',
+	'--expose-gc'
+]);
+
+export default {
+	threadArgumentsFilter: argument => !processOnly.has(argument)
+}
+```

From 3550e289fe89ceaaa9a28078078409da17c12275 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Tue, 23 Jul 2024 21:35:48 -0600
Subject: [PATCH 10/13] Title example configuration file

Co-authored-by: Tommy <tmitchell7@uh.edu>
---
 docs/06-configuration.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/docs/06-configuration.md b/docs/06-configuration.md
index 622c6579e..c5bca2e22 100644
--- a/docs/06-configuration.md
+++ b/docs/06-configuration.md
@@ -342,6 +342,7 @@ The `nodeArguments` configuration may be used to specify additional arguments fo
 
 In a config file only, `threadArgumentsFilter` may provide a function used for filtering `nodeArguments` sent to worker threads. This enables excluding arguments that throw if sent to a thread. The filter is ignored by worker processes.
 
+`ava.config.js`:
 ```js
 const processOnly = new Set([
 	'--allow-natives-syntax',

From 3cc44eb9bdd36814037da979688c2382f992036b Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Fri, 2 Aug 2024 13:46:36 -0600
Subject: [PATCH 11/13] Remove unreachable default

Co-authored-by: Mark Wubben <mark@novemberborn.net>
---
 lib/cli.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/cli.js b/lib/cli.js
index 8fac5fcf7..c180b6252 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -393,7 +393,6 @@ export default async function loadCli() { // eslint-disable-line complexity
 	let nodeArguments;
 	try {
 		nodeArguments = normalizeNodeArguments(conf.nodeArguments, argv['node-arguments']);
-		nodeArguments ??= process.execArgv;
 		if (workerThreads && 'threadArgumentsFilter' in conf) {
 			const {threadArgumentsFilter: filter} = conf;
 			nodeArguments = nodeArguments.filter(argument => filter(argument));

From e40eed7fa04a2f30f9cb25e32dfd7be965b3d002 Mon Sep 17 00:00:00 2001
From: bojavou <134245276+bojavou@users.noreply.github.com>
Date: Fri, 2 Aug 2024 20:10:15 +0000
Subject: [PATCH 12/13] Make option name more explicit

---
 docs/06-configuration.md                      |   6 ++--
 lib/cli.js                                    |   4 +--
 lib/load-config.js                            |   7 +++--
 .../load-config/non-function/ava.config.js    |   2 +-
 test/config/loader.js                         |   2 +-
 test/config/snapshots/loader.js.md            |  10 +++++--
 test/config/snapshots/loader.js.snap          | Bin 625 -> 660 bytes
 .../thread-arguments-filter.config.mjs        |   2 +-
 test/node-arguments/snapshots/test.js.md      |  26 ++++++++++++++++--
 test/node-arguments/snapshots/test.js.snap    | Bin 547 -> 583 bytes
 test/node-arguments/test.js                   |   4 +--
 11 files changed, 47 insertions(+), 16 deletions(-)

diff --git a/docs/06-configuration.md b/docs/06-configuration.md
index c5bca2e22..c3941f41a 100644
--- a/docs/06-configuration.md
+++ b/docs/06-configuration.md
@@ -338,9 +338,9 @@ The `nodeArguments` configuration may be used to specify additional arguments fo
 
 [CLI]: ./05-command-line.md
 
-## Thread arguments filter
+## Node arguments filter for worker threads
 
-In a config file only, `threadArgumentsFilter` may provide a function used for filtering `nodeArguments` sent to worker threads. This enables excluding arguments that throw if sent to a thread. The filter is ignored by worker processes.
+In a config file only, `filterNodeArgumentsForWorkerThreads` may provide a function used for filtering `nodeArguments` sent to worker threads. This enables excluding arguments that throw if sent to a thread. The filter is ignored by worker processes.
 
 `ava.config.js`:
 ```js
@@ -350,6 +350,6 @@ const processOnly = new Set([
 ]);
 
 export default {
-	threadArgumentsFilter: argument => !processOnly.has(argument)
+	filterNodeArgumentsForWorkerThreads: argument => !processOnly.has(argument)
 }
 ```
diff --git a/lib/cli.js b/lib/cli.js
index c180b6252..dd0c9feb2 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -393,8 +393,8 @@ export default async function loadCli() { // eslint-disable-line complexity
 	let nodeArguments;
 	try {
 		nodeArguments = normalizeNodeArguments(conf.nodeArguments, argv['node-arguments']);
-		if (workerThreads && 'threadArgumentsFilter' in conf) {
-			const {threadArgumentsFilter: filter} = conf;
+		if (workerThreads && 'filterNodeArgumentsForWorkerThreads' in conf) {
+			const {filterNodeArgumentsForWorkerThreads: filter} = conf;
 			nodeArguments = nodeArguments.filter(argument => filter(argument));
 		}
 	} catch (error) {
diff --git a/lib/load-config.js b/lib/load-config.js
index 68d2f265b..be7b36d96 100644
--- a/lib/load-config.js
+++ b/lib/load-config.js
@@ -157,8 +157,11 @@ export async function loadConfig({configFile, resolveFrom = process.cwd(), defau
 		...defaults, nonSemVerExperiments: {}, ...fileConf, ...packageConf, projectDir, configFile,
 	};
 
-	if ('threadArgumentsFilter' in config && typeof config.threadArgumentsFilter !== 'function') {
-		throw new Error(`threadArgumentsFilter from ${fileForErrorMessage} must be a function`);
+	if (
+		'filterNodeArgumentsForWorkerThreads' in config
+		&& typeof config.filterNodeArgumentsForWorkerThreads !== 'function'
+	) {
+		throw new Error(`filterNodeArgumentsForWorkerThreads from ${fileForErrorMessage} must be a function`);
 	}
 
 	const {nonSemVerExperiments: experiments} = config;
diff --git a/test-tap/fixture/load-config/non-function/ava.config.js b/test-tap/fixture/load-config/non-function/ava.config.js
index 749214339..66d67d233 100644
--- a/test-tap/fixture/load-config/non-function/ava.config.js
+++ b/test-tap/fixture/load-config/non-function/ava.config.js
@@ -1,3 +1,3 @@
 export default {
-	threadArgumentsFilter: [],
+	filterNodeArgumentsForWorkerThreads: [],
 };
diff --git a/test/config/loader.js b/test/config/loader.js
index 5a128e76f..af25c248d 100644
--- a/test/config/loader.js
+++ b/test/config/loader.js
@@ -117,7 +117,7 @@ test.serial('throws an error if a .js config file has no default export', notOk(
 
 test.serial('throws an error if a config file contains `ava` property', notOk('contains-ava-property'));
 
-test.serial('throws an error if a config file contains a non-function `threadArgumentsFilter` property', notOk('non-function'));
+test.serial('throws an error if a config file contains a non-function `filterNodeArgumentsForWorkerThreads` property', notOk('non-function'));
 
 test.serial('throws an error if a config file contains a non-object `nonSemVerExperiments` property', notOk('non-object-experiments'));
 
diff --git a/test/config/snapshots/loader.js.md b/test/config/snapshots/loader.js.md
index 7074ece76..7a3c373d3 100644
--- a/test/config/snapshots/loader.js.md
+++ b/test/config/snapshots/loader.js.md
@@ -40,11 +40,11 @@ Generated by [AVA](https://avajs.dev).
 
     'Encountered ’ava’ property in ava.config.js; avoid wrapping the configuration'
 
-## throws an error if a config file contains a non-function `threadArgumentsFilter` property
+## throws an error if a config file contains a non-function `filterNodeArgumentsForWorkerThreads` property
 
 > error message
 
-    'threadArgumentsFilter from ava.config.js must be a function'
+    'filterNodeArgumentsForWorkerThreads from ava.config.js must be a function'
 
 ## throws an error if a config file contains a non-object `nonSemVerExperiments` property
 
@@ -63,3 +63,9 @@ Generated by [AVA](https://avajs.dev).
 > error message
 
     'Conflicting configuration in ava.config.js and ava.config.cjs'
+
+## throws an error if a config file contains a non-function `threadArgumentsFilter` property
+
+> error message
+
+    'threadArgumentsFilter from ava.config.js must be a function'
diff --git a/test/config/snapshots/loader.js.snap b/test/config/snapshots/loader.js.snap
index 8b209f7cd80a66277d79d6cf3c947ce2e22ee1fe..f42c1bf106bb3d426148c89bf67ebcde225b7a99 100644
GIT binary patch
literal 660
zcmV;F0&D$2RzV<BZeeh9Xm4~Nb~6eC0A5bjIRdW|#`&W)?-|$#A%FW)2-{*b;-u#n
zxkEWvULT7H00000000A>mBDV)KoEvoA;g(Cm^<Jzv~YkZK?Mn^YSqGtjO}r}?s~?W
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z2C?`Y65-6u9H0_ZN{-kY$5^>sy!&;Nrs(ne!LywgJI!zR`OeGT{gH5HP2vsDy7RT7
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z46%O-^cU}hF!7?7kP5k$Ldn<4fKXX93=$WV1loSsb1|B9WlHk7H1@kb#Fr16Ue@kE
z8bcQLhAiBnFH|?8f9avW5AX#GHBDc3E2}y28`>UbZZuZzxXlg=q?BQ8m&)tRM?L28
zxGmTOrpbBF!Ct80ZG7;7$~JiqXQly9ggqK|FvU4ep;D<x{pC9P&mQ{Wm=mellm1J`
z?bS8T@%HNa?)ci2?gP%nq;RfSRgGDnQ-83BY|OT|fxyCVmKO`t%vewQO;Y-(v$`bq
zZX$XrdPaJjD`Dz}T%Yz_A8b(#GL<rPd2w@f+a&Jfv2MFyPg(eg$`jJ@MMY{_ydiU+
zd*<GSjt{!oX5@!ot;P&7#+Cw4?-F8T7DM3CYOR0?vv_L|LW++asdmjRcTxMYZ?*Hj
u_H2B3<j!09k`!(T`Nz}8$G4%r4||*cp-es4<H7S!ACbQS!h0EY2mk;wFI7YU

literal 625
zcmV-%0*?JbRzV<BZeeh9Xm4~Nb~6eC03dU9-7_q7&!_|KHu9(+OL)X_VdLa&wR_hW
zbn9aa^dE}|00000000A(mBDh;Fc5~*VHnQ5!QKI%p@jov5(YSR%5>mF*7iD<EAMI~
zIZbZm${X}ZAFWRUcI*%*!byCTNBe*O>euRb7Hdgv+^+}n%4=G_@VS*+2gpFyiUpNH
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z42l647_AqhqSi~nU~+?ViV7!88e`JsnxQ1;a84cL>y}YvZPlsL1Y(-XIX3VWyUG}`
zo>HKtCw5ABANXqzcsiC!r@-Pt3#M&#$dslFP##>~{LgVg5EbqvL`mU5EJS7D{>con
ze+cv!H$s?ru`5W0Tti{WSC#?6XjBXm7nB6re%W&|p0;I5^10OZ+djmrou-$S`;W$u
zh4Uc`8}zm6LG;f(^tS=NV4=F{UAMA|6MvxXVdh$6>x`T1us})~R=QK(XTIt&PbN*l
zIxuz4dk)S+4R7LuJ1WQIJ)D^uJQ4P&*ue}JI0IwFkoBv5^dCL+%Lyk^u_yaC9glbS
zxWLD|`_1;fTY3Sw5S7BMMPq8SKBxZ09<uTMcpC^T{Hi-xnEBiirtj^%Dv7<DD(%S*
z`P>;q!Tpd~DMJSo*T-{As;*CU)P{G)!dFyYlbtLLS=B%d+4<PB^Cq-?(9JQ|dU!I`
zW{5G?6d11^#KF9Uz@zP20TXIHPY^<ir(T=pDeK;wW_lm>u6^m*cz5EvwzZNJE`<CC
L6!3HDhX()vw!Jc~

diff --git a/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs b/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
index aa7dcb44c..f8a3cddf9 100644
--- a/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
+++ b/test/node-arguments/fixtures/thread-arguments-filter/thread-arguments-filter.config.mjs
@@ -5,5 +5,5 @@ export default {
 		'--throw-deprecation',
 		'--allow-natives-syntax',
 	],
-	threadArgumentsFilter: argument => !processOnly.has(argument),
+	filterNodeArgumentsForWorkerThreads: argument => !processOnly.has(argument),
 };
diff --git a/test/node-arguments/snapshots/test.js.md b/test/node-arguments/snapshots/test.js.md
index 05b21577f..9fdb63532 100644
--- a/test/node-arguments/snapshots/test.js.md
+++ b/test/node-arguments/snapshots/test.js.md
@@ -15,7 +15,7 @@ Generated by [AVA](https://avajs.dev).
       },
     ]
 
-## `threadArgumentsFilter` configuration filters arguments for worker thread
+## `filterNodeArgumentsForWorkerThreads` configuration filters arguments for worker thread
 
 > tests pass
 
@@ -26,7 +26,7 @@ Generated by [AVA](https://avajs.dev).
       },
     ]
 
-## `threadArgumentsFilter` configuration ignored for worker process
+## `filterNodeArgumentsForWorkerThreads` configuration ignored for worker process
 
 > tests pass
 
@@ -53,3 +53,25 @@ Generated by [AVA](https://avajs.dev).
         title: 'works',
       },
     ]
+
+## `threadArgumentsFilter` configuration filters arguments for worker thread
+
+> tests pass
+
+    [
+      {
+        file: 'thread.js',
+        title: 'exec arguments filtered',
+      },
+    ]
+
+## `threadArgumentsFilter` configuration ignored for worker process
+
+> tests pass
+
+    [
+      {
+        file: 'process.js',
+        title: 'exec arguments unfiltered',
+      },
+    ]
diff --git a/test/node-arguments/snapshots/test.js.snap b/test/node-arguments/snapshots/test.js.snap
index 853b95b6d4797918705beee6842fd07700837d76..bbccccf41e85c97ad9c54ef26ccfe632b0cbd8b0 100644
GIT binary patch
literal 583
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z+eq<|rbw!uXFtm=MG{GJ@oB81`LICKfj+tyzObbWM3KwDB!;UQhT^@n1r5Y&IVHhG
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V&#y-B+F<6~{s0W=3&$-8004w1A_o8f

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ztaq)QHMx^$uHXrvqv9G~1;K0ZAjokX<s49u5?8xk&+I?n{GM;w)OxkxPuCPpv~+=`
zWG0QyYeE_Fsvs8`qsOHW3kq!5$&zP2^3}E0GRpVA`*0iTN8Ay;X8`aV0M5k8NF?VW
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z(o!T$)0_6+Me}ikCV`P~uY6_eKRse80~1cV87BBa+KR^bRxSv+3WU;H<QR<0YcCTj
z>+5kLoyMtD3$~JH)Ergyf$|}ciuQ8c)DkjjEaTF|85YDWbJ~oa+6dg8JX!F?+6}t}
l{XAN)zaQA^$2ZBPwd}N!y|4XA?P%U<^&iq7$0(Zx002ZA3WWdw

diff --git a/test/node-arguments/test.js b/test/node-arguments/test.js
index 417b98aef..92134a0f7 100644
--- a/test/node-arguments/test.js
+++ b/test/node-arguments/test.js
@@ -13,7 +13,7 @@ test('passed node arguments to workers', async t => {
 	t.snapshot(result.stats.passed, 'tests pass');
 });
 
-test('`threadArgumentsFilter` configuration filters arguments for worker thread', async t => {
+test('`filterNodeArgumentsForWorkerThreads` configuration filters arguments for worker thread', async t => {
 	const options = {
 		cwd: cwd('thread-arguments-filter'),
 	};
@@ -23,7 +23,7 @@ test('`threadArgumentsFilter` configuration filters arguments for worker thread'
 	t.snapshot(result.stats.passed, 'tests pass');
 });
 
-test('`threadArgumentsFilter` configuration ignored for worker process', async t => {
+test('`filterNodeArgumentsForWorkerThreads` configuration ignored for worker process', async t => {
 	const options = {
 		cwd: cwd('thread-arguments-filter'),
 	};

From fbd9d336d1b0039e5ef1c696dd6937c1e4c3d77d Mon Sep 17 00:00:00 2001
From: Mark Wubben <mark@novemberborn.net>
Date: Tue, 20 Aug 2024 15:44:28 +0200
Subject: [PATCH 13/13] Restore default assignment

---
 lib/fork.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/fork.js b/lib/fork.js
index b2b2405e6..8317774ff 100644
--- a/lib/fork.js
+++ b/lib/fork.js
@@ -60,7 +60,7 @@ const createWorker = (options, execArgv) => {
 	};
 };
 
-export default function loadFork(file, options, execArgv) {
+export default function loadFork(file, options, execArgv = process.execArgv) {
 	let finished = false;
 
 	const emitter = new Emittery();