diff --git a/CLAUDE.md b/CLAUDE.md
index a7c97bf047..206f93b1ab 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1549
+**Current Version:** 0.5.1550
 
 
 ## TypeScript Parity Status
diff --git a/Cargo.lock b/Cargo.lock
index f270a9084f..d86309b53e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5690,7 +5690,7 @@ checksum = "4b2094dda4d997bf73a372cb660d02e9abdb0a13cbf834ddd2b2f8847bffe2cf"
 
 [[package]]
 name = "perry"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "base64 0.22.1",
@@ -5754,7 +5754,7 @@ dependencies = [
 
 [[package]]
 name = "perry-api-manifest"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-dispatch",
  "serde",
@@ -5762,7 +5762,7 @@ dependencies = [
 
 [[package]]
 name = "perry-audio-miniaudio"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "cc",
  "libc",
@@ -5771,7 +5771,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "aho-corasick",
  "anyhow",
@@ -5789,7 +5789,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-arkts"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5797,7 +5797,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-glance"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5805,7 +5805,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-js"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-dispatch",
@@ -5814,7 +5814,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-swiftui"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5822,7 +5822,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-wasm"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "base64 0.22.1",
@@ -5834,7 +5834,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-wear-tiles"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5842,7 +5842,7 @@ dependencies = [
 
 [[package]]
 name = "perry-container-compose"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -5870,14 +5870,14 @@ dependencies = [
 
 [[package]]
 name = "perry-container-e2e"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
 ]
 
 [[package]]
 name = "perry-diagnostics"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "serde",
  "serde_json",
@@ -5885,7 +5885,7 @@ dependencies = [
 
 [[package]]
 name = "perry-dispatch"
-version = "0.5.1549"
+version = "0.5.1550"
 
 [[package]]
 name = "perry-doc-fixture-my-bindings"
@@ -5896,7 +5896,7 @@ dependencies = [
 
 [[package]]
 name = "perry-doc-tests"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "clap",
@@ -5911,7 +5911,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ads"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "block2",
  "objc2",
@@ -5921,7 +5921,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-argon2"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "argon2",
  "perry-ffi",
@@ -5930,7 +5930,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-axios"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "reqwest",
@@ -5939,7 +5939,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-bcrypt"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "bcrypt",
  "perry-ffi",
@@ -5947,7 +5947,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-better-sqlite3"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "rusqlite",
@@ -5955,7 +5955,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-cheerio"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "scraper",
@@ -5963,7 +5963,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-commander"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -5971,7 +5971,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-cron"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "chrono",
  "cron",
@@ -5981,7 +5981,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-dayjs"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -5989,7 +5989,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-decimal"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "rust_decimal",
@@ -5997,7 +5997,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-dotenv"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "serde_json",
@@ -6005,7 +6005,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ethers"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "rand 0.10.2",
@@ -6013,7 +6013,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-events"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -6021,14 +6021,14 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-exponential-backoff"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
 ]
 
 [[package]]
 name = "perry-ext-fastify"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "bytes",
  "http-body-util",
@@ -6046,7 +6046,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-fetch"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "bytes",
  "lazy_static",
@@ -6059,7 +6059,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-http"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "bytes",
@@ -6091,7 +6091,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ioredis"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "lazy_static",
  "perry-ffi",
@@ -6101,7 +6101,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-jsonwebtoken"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "jsonwebtoken",
@@ -6112,7 +6112,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-lru-cache"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "lru",
  "perry-ffi",
@@ -6121,7 +6121,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-moment"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -6129,7 +6129,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-mongodb"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "bson",
  "futures-util",
@@ -6141,7 +6141,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-mysql2"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -6153,7 +6153,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-nanoid"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "nanoid",
  "perry-ffi",
@@ -6162,7 +6162,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-net"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "bytes",
  "perry-ffi",
@@ -6177,7 +6177,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-node-forge"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "const-oid 0.10.2",
  "der 0.8.1",
@@ -6196,7 +6196,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-nodemailer"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "lettre",
  "perry-ffi",
@@ -6206,7 +6206,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-parcel-watcher"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "notify",
  "perry-ffi",
@@ -6218,7 +6218,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-pdf"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "printpdf",
@@ -6226,7 +6226,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-pg"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "sqlx",
@@ -6235,7 +6235,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-qs"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -6244,7 +6244,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ratelimit"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "governor",
  "perry-ffi",
@@ -6252,7 +6252,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-sharp"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "fast_image_resize",
  "image",
@@ -6263,7 +6263,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-streams"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "lazy_static",
  "perry-ffi",
@@ -6272,7 +6272,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-typescript"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-ffi",
@@ -6292,7 +6292,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-undici"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -6301,7 +6301,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-uuid"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "uuid",
@@ -6309,7 +6309,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-validator"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-validation",
@@ -6318,7 +6318,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ws"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "futures-util",
  "lazy_static",
@@ -6331,7 +6331,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-zlib"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "brotli",
  "flate2",
@@ -6341,7 +6341,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ffi"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "dashmap 6.2.1",
  "once_cell",
@@ -6351,7 +6351,7 @@ dependencies = [
 
 [[package]]
 name = "perry-hir"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-api-manifest",
@@ -6372,11 +6372,11 @@ dependencies = [
 
 [[package]]
 name = "perry-native-registration"
-version = "0.5.1549"
+version = "0.5.1550"
 
 [[package]]
 name = "perry-parser"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-diagnostics",
@@ -6390,7 +6390,7 @@ dependencies = [
 
 [[package]]
 name = "perry-perex"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perex",
  "regex",
@@ -6398,7 +6398,7 @@ dependencies = [
 
 [[package]]
 name = "perry-runtime"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "ahash",
  "anyhow",
@@ -6458,14 +6458,14 @@ dependencies = [
 
 [[package]]
 name = "perry-runtime-static"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-runtime",
 ]
 
 [[package]]
 name = "perry-stdlib"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "aes 0.8.4",
  "aes 0.9.1",
@@ -6560,14 +6560,14 @@ dependencies = [
 
 [[package]]
 name = "perry-stdlib-static"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-stdlib",
 ]
 
 [[package]]
 name = "perry-transform"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -6576,7 +6576,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "perry-ffi",
  "perry-ui-model",
@@ -6584,7 +6584,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-android"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "itoa",
@@ -6602,7 +6602,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-geisterhand"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "rand 0.10.2",
  "serde",
@@ -6612,7 +6612,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-gtk4"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "cairo-rs 0.22.9",
@@ -6635,7 +6635,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-ios"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "block2",
@@ -6652,7 +6652,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-macos"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "block2",
@@ -6669,7 +6669,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-model"
-version = "0.5.1549"
+version = "0.5.1550"
 
 [[package]]
 name = "perry-ui-test"
@@ -6680,11 +6680,11 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-testkit"
-version = "0.5.1549"
+version = "0.5.1550"
 
 [[package]]
 name = "perry-ui-tvos"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "block2",
@@ -6701,7 +6701,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-visionos"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "block2",
@@ -6718,7 +6718,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-watchos"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "block2",
  "libc",
@@ -6732,7 +6732,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-windows"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "libc",
@@ -6751,7 +6751,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-windows-winui"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "base64 0.22.1",
  "libc",
@@ -6764,7 +6764,7 @@ dependencies = [
 
 [[package]]
 name = "perry-updater"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "anyhow",
  "base64 0.22.1",
@@ -6780,7 +6780,7 @@ dependencies = [
 
 [[package]]
 name = "perry-validation"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "idna",
  "regex",
@@ -6790,7 +6790,7 @@ dependencies = [
 
 [[package]]
 name = "perry-wasm-host"
-version = "0.5.1549"
+version = "0.5.1550"
 dependencies = [
  "wasmi",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 5f937808b6..0bc188f5f7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -338,7 +338,7 @@ codegen-units = 1
 codegen-units = 1
 
 [workspace.package]
-version = "0.5.1549"
+version = "0.5.1550"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/PerryTS/perry"
diff --git a/changelog.d/10176-regex-no-work-cap.md b/changelog.d/10176-regex-no-work-cap.md
new file mode 100644
index 0000000000..3c10963c86
--- /dev/null
+++ b/changelog.d/10176-regex-no-work-cap.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- **RegExp operations are no longer capped by work** (#10164). Valid programs that Node completes threw `RangeError: Regular expression work limit exceeded`: a 32,000-unit non-ASCII `split`, a 60,000-unit global `replace`, and linear splits and replaces of 11–15 million units. No finite allowance separates valid programs from pathological ones, so a catastrophic pattern now runs as long as it does in Node. Matching still yields to the collector and to cancellation, and the memory limits are unchanged.
diff --git a/crates/perry-runtime/src/gc/tests/runtime_roots.rs b/crates/perry-runtime/src/gc/tests/runtime_roots.rs
index d21d61fe5c..a5e4bf025f 100644
--- a/crates/perry-runtime/src/gc/tests/runtime_roots.rs
+++ b/crates/perry-runtime/src/gc/tests/runtime_roots.rs
@@ -42,6 +42,8 @@ mod perex_reuse;
 mod perex_split;
 #[cfg(feature = "regex-engine")]
 mod perex_strings;
+#[cfg(feature = "regex-engine")]
+mod perex_work_policy;
 mod prototype_addr_cache;
 mod regexp_last_index;
 mod segment_record_keys;
diff --git a/crates/perry-runtime/src/gc/tests/runtime_roots/perex_work_policy.rs b/crates/perry-runtime/src/gc/tests/runtime_roots/perex_work_policy.rs
new file mode 100644
index 0000000000..dabc3f28c1
--- /dev/null
+++ b/crates/perry-runtime/src/gc/tests/runtime_roots/perex_work_policy.rs
@@ -0,0 +1,62 @@
+//! RegExp operations are not capped by work (#10164): a valid program whose
+//! matching charges more than the former 100,000,000-unit allowance completes.
+use super::*;
+use crate::regex::perex_api as api;
+use crate::regex::perex_memory::MemoryBudget;
+use crate::regex::RegExpHeader;
+use crate::string::StringHeader;
+use perex::Budget;
+
+const FORMER_WORK_LIMIT: usize = 100_000_000;
+
+fn text<'s>(scope: &'s RuntimeHandleScope, bytes: &[u8]) -> RuntimeHandle<'s> {
+    scope.root_string_ptr(crate::string::js_string_from_bytes(
+        bytes.as_ptr(),
+        bytes.len() as u32,
+    ))
+}
+
+#[test]
+fn perex_operation_allowance_admits_linear_work_beyond_the_former_limit() {
+    let _guard = CopyingNurseryTestGuard::new(0);
+    let _triggers = GcTriggerThresholdTestGuard::suppress_automatic_triggers();
+    super::perex_public::register_host_roots();
+    let scope = RuntimeHandleScope::new();
+    // One search that is linear but heavy: at every position the lookahead
+    // reads 32 units and then fails on a character class the subject never
+    // contains, so it matches nothing and allocates no results. The pattern has
+    // no required literal on purpose; a literal lets admission reject the whole
+    // search in one pass without doing the per-position work. Measured at about
+    // 220 work units per subject unit, so 540,000 units charge about 1.2e8.
+    let pattern = text(&scope, br"\w(?=[\w,; ]{32}[^\w,; ])");
+    let flags = text(&scope, b"");
+    let receiver = scope.root_raw_mut_ptr(pattern.with_const_ptr::<StringHeader, _>(|pattern| {
+        flags.with_const_ptr::<StringHeader, _>(|flags| crate::regex::js_regexp_new(pattern, flags))
+    }));
+    let input = text(&scope, "ab12,cd345;ef6 ".repeat(36_000).as_bytes());
+    let memory = MemoryBudget::new(api::SCRATCH_BYTES);
+    let mut budget = Budget::new(api::WORK);
+    let found = receiver.with_mut_ptr::<RegExpHeader, _>(|receiver| {
+        input.with_const_ptr::<StringHeader, _>(|input| {
+            api::execute_with_resources(
+                receiver,
+                input,
+                false,
+                &mut budget,
+                &memory,
+                &mut || Ok(()),
+                None,
+            )
+        })
+    });
+    let charged = api::WORK - budget.remaining();
+    assert!(
+        matches!(found, Ok(None)),
+        "a valid search must complete without a work-limit error"
+    );
+    assert!(
+        charged > FORMER_WORK_LIMIT,
+        "the witness must charge more than the former limit to prove anything; \
+         charged {charged}, so a Perex change may have made this pattern cheaper"
+    );
+}
diff --git a/crates/perry-runtime/src/regex/perex_api.rs b/crates/perry-runtime/src/regex/perex_api.rs
index 900e603280..2e23d56d6d 100644
--- a/crates/perry-runtime/src/regex/perex_api.rs
+++ b/crates/perry-runtime/src/regex/perex_api.rs
@@ -12,7 +12,18 @@ use perex::executor::ExecError;
 use perex::{span::Span, Budget};
 
 // One explicit host policy; no retained scratch cache or alternate engine.
-pub(crate) const WORK: usize = 100_000_000;
+/// A RegExp operation's work allowance: effectively unlimited (#10164).
+///
+/// JavaScript engines never abort regex matching for doing too much work, and
+/// no finite allowance separates valid programs from pathological ones: Perex's
+/// charge per subject unit depends on the program (about 1 for `/x/`, 60 for
+/// `/([a-z]+)([0-9]+)/g`, over 200 for a 32-unit lookahead), so any cap throws
+/// on some large linear input Node completes. The former 100,000,000 did, as
+/// `RangeError: Regular expression work limit exceeded`. Searches still run in
+/// `QUANTUM` slices with a GC poll between them, so collection and cancellation
+/// keep working; a catastrophic pattern runs as long as it does in Node. The
+/// memory limits below are unchanged.
+pub(crate) const WORK: usize = usize::MAX;
 pub(crate) const SCRATCH_BYTES: usize = 64 * 1024 * 1024;
 pub(crate) const PROGRAM_BYTES: usize = 32 * 1024 * 1024;
 pub(crate) const QUANTUM: usize = 4096;