diff --git a/eslint.config.mjs b/eslint.config.mjs
index d30ddd2c..a2691db3 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -133,7 +133,8 @@ export default [
             "no-with": "error",
             "require-yield": "error",
             "use-isnan": "error",
-            "valid-typeof": "error"
+            "valid-typeof": "error",
+            "strict": "error"
         }
     }
 ];
diff --git a/examples/nodejs.js b/examples/nodejs.js
index 98b4fd8b..2a7d0fb3 100755
--- a/examples/nodejs.js
+++ b/examples/nodejs.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 
 import fs from "node:fs";
 import url from "node:url";
diff --git a/examples/nodejs_state.js b/examples/nodejs_state.js
index 63f5df25..834f3b5b 100755
--- a/examples/nodejs_state.js
+++ b/examples/nodejs_state.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 
 import fs from "node:fs";
 import url from "node:url";
diff --git a/gen/generate_analyzer.js b/gen/generate_analyzer.js
index a75cfe03..5fb95388 100755
--- a/gen/generate_analyzer.js
+++ b/gen/generate_analyzer.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 
 import assert from "node:assert/strict";
 import fs from "node:fs";
diff --git a/gen/generate_interpreter.js b/gen/generate_interpreter.js
index 54d68598..02a9d902 100755
--- a/gen/generate_interpreter.js
+++ b/gen/generate_interpreter.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 
 import assert from "node:assert/strict";
 import fs from "node:fs";
diff --git a/gen/generate_jit.js b/gen/generate_jit.js
index e9cdc357..33f15882 100755
--- a/gen/generate_jit.js
+++ b/gen/generate_jit.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 
 import assert from "node:assert/strict";
 import fs from "node:fs";
diff --git a/gen/rust_ast.js b/gen/rust_ast.js
index 7d50cd55..23177801 100644
--- a/gen/rust_ast.js
+++ b/gen/rust_ast.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import assert from "node:assert/strict";
 
 function indent(lines, how_much)
diff --git a/gen/util.js b/gen/util.js
index ed59ec99..c33ca963 100644
--- a/gen/util.js
+++ b/gen/util.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import fs from "node:fs";
 import path from "node:path";
 import process from "node:process";
diff --git a/gen/x86_table.js b/gen/x86_table.js
index a360cba9..bd6039cf 100644
--- a/gen/x86_table.js
+++ b/gen/x86_table.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // http://ref.x86asm.net/coder32.html
 
 const zf = 1 << 6;
diff --git a/lib/9p.js b/lib/9p.js
index ada6dbe2..70f4f8c8 100644
--- a/lib/9p.js
+++ b/lib/9p.js
@@ -4,7 +4,6 @@
 // Implementation of the 9p filesystem device following the
 // 9P2000.L protocol ( https://code.google.com/p/diod/wiki/protocol )
 
-"use strict";
 
 import { LOG_9P } from "./../src/const.js";
 import { VirtIO, VIRTIO_F_VERSION_1, VIRTIO_F_RING_EVENT_IDX, VIRTIO_F_RING_INDIRECT_DESC } from "../src/virtio.js";
diff --git a/lib/filesystem.js b/lib/filesystem.js
index fbc4f61a..60fd30fb 100644
--- a/lib/filesystem.js
+++ b/lib/filesystem.js
@@ -3,7 +3,6 @@
 // -------------------------------------------------
 // Implementation of a unix filesystem in memory.
 
-"use strict";
 
 import { LOG_9P } from "../src/const.js";
 import { h } from "../src/lib.js";
diff --git a/lib/marshall.js b/lib/marshall.js
index b514e55a..548172be 100644
--- a/lib/marshall.js
+++ b/lib/marshall.js
@@ -2,7 +2,6 @@
 // ------------------ Marshall ---------------------
 // -------------------------------------------------
 // helper functions for virtio and 9p.
-"use strict";
 
 import { dbg_log } from "./../src/log.js";
 
diff --git a/src/acpi.js b/src/acpi.js
index dbeab02a..f38150d6 100644
--- a/src/acpi.js
+++ b/src/acpi.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // http://www.uefi.org/sites/default/files/resources/ACPI_6_1.pdf
 
 import { v86 } from "./main.js";
diff --git a/src/apic.js b/src/apic.js
index 6462de0f..40192734 100644
--- a/src/apic.js
+++ b/src/apic.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // See Intel's System Programming Guide
 
 import { v86 } from "./main.js";
diff --git a/src/browser/dummy_screen.js b/src/browser/dummy_screen.js
index 6039d961..e7f6af63 100644
--- a/src/browser/dummy_screen.js
+++ b/src/browser/dummy_screen.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "../log.js";
 
 /**
diff --git a/src/browser/fake_network.js b/src/browser/fake_network.js
index 8b1290e3..5b39b28b 100644
--- a/src/browser/fake_network.js
+++ b/src/browser/fake_network.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_FETCH } from "../const.js";
 import { h } from "../lib.js";
 import { dbg_assert, dbg_log } from "../log.js";
diff --git a/src/browser/fetch_network.js b/src/browser/fetch_network.js
index 7be99b2c..0526c618 100644
--- a/src/browser/fetch_network.js
+++ b/src/browser/fetch_network.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_FETCH } from "../const.js";
 import { h } from "../lib.js";
 import { dbg_log } from "../log.js";
diff --git a/src/browser/filestorage.js b/src/browser/filestorage.js
index 2cfd8fdd..c84c7c11 100644
--- a/src/browser/filestorage.js
+++ b/src/browser/filestorage.js
@@ -1,6 +1,3 @@
-"use strict";
-
-
 import { dbg_assert } from "../log.js";
 import { load_file } from "../lib.js";
 
diff --git a/src/browser/inbrowser_network.js b/src/browser/inbrowser_network.js
index 9ec1ea23..626eda03 100644
--- a/src/browser/inbrowser_network.js
+++ b/src/browser/inbrowser_network.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // For Types Only
 import { BusConnector } from "../bus.js";
 
diff --git a/src/browser/keyboard.js b/src/browser/keyboard.js
index 1f47bf2e..0465b68f 100644
--- a/src/browser/keyboard.js
+++ b/src/browser/keyboard.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // For Types Only
 import { BusConnector } from "../bus.js";
 
diff --git a/src/browser/main.js b/src/browser/main.js
index c87ba47e..f5a6df03 100644
--- a/src/browser/main.js
+++ b/src/browser/main.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { V86 } from "./starter.js";
 import { LOG_NAMES } from "../const.js";
 import { print_stats } from "./print_stats.js";
diff --git a/src/browser/mouse.js b/src/browser/mouse.js
index eb071ae2..9d43edbd 100644
--- a/src/browser/mouse.js
+++ b/src/browser/mouse.js
@@ -1,6 +1,3 @@
-"use strict";
-
-
 import { dbg_log } from "../log.js";
 
 // For Types Only
diff --git a/src/browser/network.js b/src/browser/network.js
index 4ee59d6d..72abcdfd 100644
--- a/src/browser/network.js
+++ b/src/browser/network.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // For Types Only
 import { BusConnector } from "../bus.js";
 
diff --git a/src/browser/print_stats.js b/src/browser/print_stats.js
index c2d84dd6..1c807411 100644
--- a/src/browser/print_stats.js
+++ b/src/browser/print_stats.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { pads } from "../lib.js";
 
 export const print_stats = {
diff --git a/src/browser/screen.js b/src/browser/screen.js
index 5f1d3f80..ab314a23 100644
--- a/src/browser/screen.js
+++ b/src/browser/screen.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "../log.js";
 
 // Draws entire buffer and visualizes the layers that would be drawn
diff --git a/src/browser/serial.js b/src/browser/serial.js
index 4d804195..9d65b9b1 100644
--- a/src/browser/serial.js
+++ b/src/browser/serial.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert, dbg_log } from "../log.js";
 
 // For Types Only
diff --git a/src/browser/speaker.js b/src/browser/speaker.js
index 2d29c10e..5a6273dd 100644
--- a/src/browser/speaker.js
+++ b/src/browser/speaker.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import {
     MIXER_CHANNEL_BOTH, MIXER_CHANNEL_LEFT, MIXER_CHANNEL_RIGHT,
     MIXER_SRC_PCSPEAKER, MIXER_SRC_DAC, MIXER_SRC_MASTER,
diff --git a/src/browser/starter.js b/src/browser/starter.js
index 6be147df..c57b48cb 100644
--- a/src/browser/starter.js
+++ b/src/browser/starter.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { v86 } from "../main.js";
 import { LOG_CPU, WASM_TABLE_OFFSET, WASM_TABLE_SIZE } from "../const.js";
 import { get_rand_int, load_file, read_sized_string_from_mem } from "../lib.js";
diff --git a/src/browser/wisp_network.js b/src/browser/wisp_network.js
index 99240b45..e0de942f 100644
--- a/src/browser/wisp_network.js
+++ b/src/browser/wisp_network.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_NET } from "../const.js";
 import { dbg_log } from "../log.js";
 
diff --git a/src/browser/worker_bus.js b/src/browser/worker_bus.js
index 3564d7c9..afe27803 100644
--- a/src/browser/worker_bus.js
+++ b/src/browser/worker_bus.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "../log.js";
 
 /** @constructor */
diff --git a/src/buffer.js b/src/buffer.js
index ec3585f3..a2b97b9b 100644
--- a/src/buffer.js
+++ b/src/buffer.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { CPU } from "./cpu.js";
 import { load_file, get_file_size } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/bus.js b/src/bus.js
index 07ce172b..96b865c7 100644
--- a/src/bus.js
+++ b/src/bus.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "./log.js";
 
 export var Bus = {};
diff --git a/src/cjs.js b/src/cjs.js
index 97a99c83..690e6630 100644
--- a/src/cjs.js
+++ b/src/cjs.js
@@ -1,5 +1,3 @@
-"use strict";
-
 /**
  * @define {boolean}
  * Overridden for production by closure compiler
diff --git a/src/const.js b/src/const.js
index 8d60ab33..f0189fb5 100644
--- a/src/const.js
+++ b/src/const.js
@@ -1,5 +1,3 @@
-"use strict";
-
 export const
 /** @const */ LOG_ALL = -1,
 /** @const */ LOG_NONE = 0,
diff --git a/src/cpu.js b/src/cpu.js
index 5abb04db..9690418a 100644
--- a/src/cpu.js
+++ b/src/cpu.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import {
     LOG_CPU, LOG_BIOS,
     FW_CFG_SIGNATURE, FW_CFG_SIGNATURE_QEMU,
diff --git a/src/dma.js b/src/dma.js
index 6ad6d710..0345b76e 100644
--- a/src/dma.js
+++ b/src/dma.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_DMA } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_log } from "./log.js";
diff --git a/src/elf.js b/src/elf.js
index 95a0d9a1..4283fc67 100644
--- a/src/elf.js
+++ b/src/elf.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_log, LOG_LEVEL } from "./log.js";
 
 // A minimal elf parser for loading 32 bit, x86, little endian, executable elf files
diff --git a/src/externs.js b/src/externs.js
index 057dfd05..9bd63a32 100644
--- a/src/externs.js
+++ b/src/externs.js
@@ -1,5 +1,3 @@
-"use strict";
-
 var global = {};
 var process = { hrtime: function() {} };
 
diff --git a/src/floppy.js b/src/floppy.js
index 302e29b5..437e8b66 100644
--- a/src/floppy.js
+++ b/src/floppy.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // https://www.isdaman.com/alsos/hardware/fdc/floppy.htm
 // https://wiki.osdev.org/Floppy_Disk_Controller
 
diff --git a/src/ide.js b/src/ide.js
index ea4c97e7..5498ef1c 100644
--- a/src/ide.js
+++ b/src/ide.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_DISK } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/io.js b/src/io.js
index c5900f52..3cdc6405 100644
--- a/src/io.js
+++ b/src/io.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_IO, MMAP_BLOCK_BITS, MMAP_BLOCK_SIZE, MMAP_MAX } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/ioapic.js b/src/ioapic.js
index ab51b675..1e622840 100644
--- a/src/ioapic.js
+++ b/src/ioapic.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // http://download.intel.com/design/chipsets/datashts/29056601.pdf
 
 import { LOG_APIC, MMAP_BLOCK_SIZE } from "./const.js";
diff --git a/src/kernel.js b/src/kernel.js
index 0fdd0995..5362655b 100644
--- a/src/kernel.js
+++ b/src/kernel.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
 
diff --git a/src/lib.js b/src/lib.js
index f5916047..fdab4c83 100644
--- a/src/lib.js
+++ b/src/lib.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "./log.js";
 
 // pad string with spaces on the right
diff --git a/src/log.js b/src/log.js
index 6464d55a..c8c60887 100644
--- a/src/log.js
+++ b/src/log.js
@@ -1,5 +1,3 @@
-"use strict";
-
 if(typeof DEBUG === "undefined")
 {
     globalThis.DEBUG = true;
diff --git a/src/main.js b/src/main.js
index ed1ba783..000e3430 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { CPU } from "./cpu.js";
 import { save_state, restore_state } from "./state.js";
 export { V86 } from "./browser/starter.js";
diff --git a/src/ne2k.js b/src/ne2k.js
index 6f5a94b3..5668cd86 100644
--- a/src/ne2k.js
+++ b/src/ne2k.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_NET } from "./const.js";
 import { h, hex_dump } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/pci.js b/src/pci.js
index da43efa0..84d7a671 100644
--- a/src/pci.js
+++ b/src/pci.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_PCI } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/pit.js b/src/pit.js
index 272b36c7..6d04107b 100644
--- a/src/pit.js
+++ b/src/pit.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { v86 } from "./main.js";
 import { LOG_PIT } from "./const.js";
 import { h } from "./lib.js";
diff --git a/src/ps2.js b/src/ps2.js
index ac8c2994..2c93e77a 100644
--- a/src/ps2.js
+++ b/src/ps2.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_PS2 } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_log } from "./log.js";
diff --git a/src/rtc.js b/src/rtc.js
index 404ff4c7..147c9abd 100644
--- a/src/rtc.js
+++ b/src/rtc.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { v86 } from "./main.js";
 import { LOG_RTC } from "./const.js";
 import { h } from "./lib.js";
diff --git a/src/sb16.js b/src/sb16.js
index 0c2bc263..b8c456c3 100644
--- a/src/sb16.js
+++ b/src/sb16.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import {
     LOG_SB16,
     MIXER_CHANNEL_BOTH, MIXER_CHANNEL_LEFT, MIXER_CHANNEL_RIGHT,
diff --git a/src/state.js b/src/state.js
index f9d58a27..da9142c1 100644
--- a/src/state.js
+++ b/src/state.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
 import { CPU } from "./cpu.js";
diff --git a/src/uart.js b/src/uart.js
index c8078861..01ee766a 100644
--- a/src/uart.js
+++ b/src/uart.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_SERIAL } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_log } from "./log.js";
diff --git a/src/vga.js b/src/vga.js
index 61b0d605..07b78bb0 100644
--- a/src/vga.js
+++ b/src/vga.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_VGA } from "./const.js";
 import { h } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/virtio.js b/src/virtio.js
index 26be9836..045e3d8b 100644
--- a/src/virtio.js
+++ b/src/virtio.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { LOG_VIRTIO } from "./const.js";
 import { h, zeros, int_log2 } from "./lib.js";
 import { dbg_assert, dbg_log } from "./log.js";
diff --git a/src/virtio_balloon.js b/src/virtio_balloon.js
index 59fce932..1308d437 100644
--- a/src/virtio_balloon.js
+++ b/src/virtio_balloon.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-2900003
 
 import { LOG_PCI } from "./const.js";
diff --git a/src/virtio_console.js b/src/virtio_console.js
index 177e8529..a8c87c5e 100644
--- a/src/virtio_console.js
+++ b/src/virtio_console.js
@@ -1,5 +1,3 @@
-"use strict";
-
 import { dbg_assert } from "./log.js";
 import { VirtIO, VIRTIO_F_VERSION_1 } from "./virtio.js";
 import * as marshall from "../lib/marshall.js";
diff --git a/src/virtio_net.js b/src/virtio_net.js
index 495c8284..ea6e08bd 100644
--- a/src/virtio_net.js
+++ b/src/virtio_net.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-2900003
 
 import { dbg_assert } from "./log.js";
diff --git a/tests/api/clean-shutdown.js b/tests/api/clean-shutdown.js
index a9adbf52..40080988 100755
--- a/tests/api/clean-shutdown.js
+++ b/tests/api/clean-shutdown.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 const __dirname = url.fileURLToPath(new URL(".", import.meta.url));
diff --git a/tests/api/floppy-insert-eject.js b/tests/api/floppy-insert-eject.js
index 13792408..94f168dc 100755
--- a/tests/api/floppy-insert-eject.js
+++ b/tests/api/floppy-insert-eject.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import { setTimeout as pause } from "timers/promises";
 import url from "node:url";
diff --git a/tests/api/pic.js b/tests/api/pic.js
index f6227f45..769c4d32 100755
--- a/tests/api/pic.js
+++ b/tests/api/pic.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 import fs from "node:fs";
diff --git a/tests/api/reboot.js b/tests/api/reboot.js
index 89fe8afc..3d076843 100755
--- a/tests/api/reboot.js
+++ b/tests/api/reboot.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 
diff --git a/tests/api/reset.js b/tests/api/reset.js
index b19d30b7..8df1e961 100755
--- a/tests/api/reset.js
+++ b/tests/api/reset.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 
diff --git a/tests/api/serial.js b/tests/api/serial.js
index 2107cf0e..44084217 100755
--- a/tests/api/serial.js
+++ b/tests/api/serial.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 import assert from "node:assert/strict";
diff --git a/tests/api/state.js b/tests/api/state.js
index ea33b9a1..ef743dfa 100755
--- a/tests/api/state.js
+++ b/tests/api/state.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 
diff --git a/tests/api/test.js b/tests/api/test.js
index 0d193a0a..86a6f3a2 100755
--- a/tests/api/test.js
+++ b/tests/api/test.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import url from "node:url";
 
diff --git a/tests/benchmark/arch-bytemark.js b/tests/benchmark/arch-bytemark.js
index 6eb6c82c..267fd4df 100755
--- a/tests/benchmark/arch-bytemark.js
+++ b/tests/benchmark/arch-bytemark.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import path from "node:path";
 import url from "node:url";
diff --git a/tests/benchmark/arch-python.js b/tests/benchmark/arch-python.js
index c2d87399..6d40d8a8 100755
--- a/tests/benchmark/arch-python.js
+++ b/tests/benchmark/arch-python.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import path from "node:path";
 import url from "node:url";
diff --git a/tests/benchmark/linux-boot.js b/tests/benchmark/linux-boot.js
index ed3c88fe..22ea8c40 100755
--- a/tests/benchmark/linux-boot.js
+++ b/tests/benchmark/linux-boot.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/benchmark/snapshot.js b/tests/benchmark/snapshot.js
index c7d437d1..ec65599e 100755
--- a/tests/benchmark/snapshot.js
+++ b/tests/benchmark/snapshot.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import path from "node:path";
 import url from "node:url";
diff --git a/tests/devices/fetch_network.js b/tests/devices/fetch_network.js
index 9b70e1e2..96111763 100755
--- a/tests/devices/fetch_network.js
+++ b/tests/devices/fetch_network.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import assert from "assert/strict";
 import url from "node:url";
diff --git a/tests/devices/virtio_9p.js b/tests/devices/virtio_9p.js
index 73188968..f02a495f 100755
--- a/tests/devices/virtio_9p.js
+++ b/tests/devices/virtio_9p.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 import url from "node:url";
 import fs from "node:fs";
 
diff --git a/tests/devices/virtio_balloon.js b/tests/devices/virtio_balloon.js
index b5f34711..004f78b1 100755
--- a/tests/devices/virtio_balloon.js
+++ b/tests/devices/virtio_balloon.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 import assert from "assert/strict";
 import url from "node:url";
 
diff --git a/tests/devices/virtio_console.js b/tests/devices/virtio_console.js
index 4ed81ab9..b3286fd7 100755
--- a/tests/devices/virtio_console.js
+++ b/tests/devices/virtio_console.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-"use strict";
+
 import assert from "assert/strict";
 import fs from "node:fs";
 import url from "node:url";
diff --git a/tests/devices/wisp_network.js b/tests/devices/wisp_network.js
index f70fb6dc..25feb73b 100755
--- a/tests/devices/wisp_network.js
+++ b/tests/devices/wisp_network.js
@@ -1,5 +1,5 @@
 #!/usr/bin/env -S node --experimental-websocket
-"use strict";
+
 import assert from "assert/strict";
 import url from "node:url";
 
diff --git a/tests/expect/run.js b/tests/expect/run.js
index cea8cd34..78871d1f 100755
--- a/tests/expect/run.js
+++ b/tests/expect/run.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/full/run.js b/tests/full/run.js
index 31f9a955..57e5746c 100755
--- a/tests/full/run.js
+++ b/tests/full/run.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import assert from "node:assert/strict";
 import cluster from "node:cluster";
diff --git a/tests/jit-paging/run.js b/tests/jit-paging/run.js
index aa9e50b7..8130ecbd 100755
--- a/tests/jit-paging/run.js
+++ b/tests/jit-paging/run.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import url from "node:url";
diff --git a/tests/kvm-unit-tests/run.mjs b/tests/kvm-unit-tests/run.mjs
index 29153af0..76ec8970 100755
--- a/tests/kvm-unit-tests/run.mjs
+++ b/tests/kvm-unit-tests/run.mjs
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/nasm/create_tests.js b/tests/nasm/create_tests.js
index e820f31d..9cc84861 100755
--- a/tests/nasm/create_tests.js
+++ b/tests/nasm/create_tests.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import fse from "node:fs/promises";
diff --git a/tests/nasm/gen_fixtures.js b/tests/nasm/gen_fixtures.js
index 36922117..feea254c 100755
--- a/tests/nasm/gen_fixtures.js
+++ b/tests/nasm/gen_fixtures.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/nasm/rand.js b/tests/nasm/rand.js
index 66076e49..02bc3b49 100644
--- a/tests/nasm/rand.js
+++ b/tests/nasm/rand.js
@@ -1,5 +1,3 @@
-"use strict";
-
 // From http://baagoe.com/en/RandomMusings/javascript/
 // Johannes Baagøe <baagoe@baagoe.com>, 2010
 function Mash() {
diff --git a/tests/nasm/run.js b/tests/nasm/run.js
index 9dcf72ab..9d6990a6 100755
--- a/tests/nasm/run.js
+++ b/tests/nasm/run.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/qemu/run-qemu.js b/tests/qemu/run-qemu.js
index ce477bc3..c67c449a 100755
--- a/tests/qemu/run-qemu.js
+++ b/tests/qemu/run-qemu.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tests/qemu/run.js b/tests/qemu/run.js
index 13138f01..b6bc14c5 100755
--- a/tests/qemu/run.js
+++ b/tests/qemu/run.js
@@ -1,7 +1,4 @@
 #!/usr/bin/env node
-"use strict";
-
-process.on("unhandledRejection", exn => { throw exn; });
 
 import { fileURLToPath } from "url";
 import path from "path";
@@ -11,6 +8,8 @@ const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const TEST_RELEASE_BUILD = +process.env.TEST_RELEASE_BUILD;
 const { V86 } = await import(TEST_RELEASE_BUILD ? "../../build/libv86.mjs" : "../../src/main.js");
 
+process.on("unhandledRejection", exn => { throw exn; });
+
 var test_executable = new Uint8Array(fs.readFileSync(__dirname + "/test-i386"));
 
 var emulator = new V86({
diff --git a/tests/rust/verify-wasmgen-dummy-output.js b/tests/rust/verify-wasmgen-dummy-output.js
index c7a94308..6e139624 100755
--- a/tests/rust/verify-wasmgen-dummy-output.js
+++ b/tests/rust/verify-wasmgen-dummy-output.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import fs from "node:fs";
 import path from "node:path";
diff --git a/tools/docker/alpine/build-state.js b/tools/docker/alpine/build-state.js
index 616622dc..63409fbe 100755
--- a/tools/docker/alpine/build-state.js
+++ b/tools/docker/alpine/build-state.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-"use strict";
 
 import path from "node:path";
 import fs from "node:fs";