feat: add WebStorage API (#7819)

This commit introduces localStorage and sessionStorage.

20 files changed, 819 insertions, 45 deletions

diff --git a/Cargo.lock b/Cargo.lock
index afedc80aa..5627224ba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -37,9 +37,9 @@ dependencies = [
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.15"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
 dependencies = [
  "memchr",
 ]
@@ -114,9 +114,9 @@ dependencies = [
 
 [[package]]
 name = "async-compression"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b72c1f1154e234325b50864a349b9c8e56939e266a4c307c0f159812df2f9537"
+checksum = "5443ccbb270374a2b1055fc72da40e1f237809cd6bb0e97e66d264cd138473a6"
 dependencies = [
  "brotli",
  "flate2",
@@ -442,9 +442,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
+checksum = "4feb231f0d4d6af81aed15928e58ecf5816aa62a2393e2c82f46973e92a9a278"
 dependencies = [
  "autocfg",
  "cfg-if 1.0.0",
@@ -697,6 +697,7 @@ dependencies = [
  "deno_webgpu",
  "deno_webidl",
  "deno_websocket",
+ "deno_webstorage",
  "dlopen",
  "encoding_rs",
  "filetime",
@@ -788,6 +789,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "deno_webstorage"
+version = "0.1.0"
+dependencies = [
+ "deno_core",
+ "rusqlite",
+ "serde",
+]
+
+[[package]]
 name = "derive_more"
 version = "0.99.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1014,6 +1024,18 @@ dependencies = [
 ]
 
 [[package]]
+name = "fallible-iterator"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4443176a9f2c162692bd3d352d745ef9413eec5782a80d8fd6f8a1ac692a07f7"
+
+[[package]]
+name = "fallible-streaming-iterator"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
+
+[[package]]
 name = "fancy-regex"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1483,9 +1505,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc018e188373e2777d0ef2467ebff62a08e66c3f5857b23c8fbec3018210dc00"
+checksum = "825343c4eef0b63f541f8903f395dc5beb362a979b5799a84062527ef1e37726"
 dependencies = [
  "bytes",
  "fnv",
@@ -1510,6 +1532,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "hashlink"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d99cf782f0dc4372d26846bec3de7804ceb5df083c2d4462c0b8d2330e894fa8"
+dependencies = [
+ "hashbrown",
+]
+
+[[package]]
 name = "heck"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1787,9 +1818,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.93"
+version = "0.2.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
+checksum = "18794a8ad5b29321f790b55d93dfba91e125cb1a9edbd4f8e3150acc771c1a5e"
 
 [[package]]
 name = "libloading"
@@ -1802,6 +1833,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "libsqlite3-sys"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19cb1effde5f834799ac5e5ef0e40d45027cd74f271b1de786ba8abb30e2164d"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
 name = "linked-hash-map"
 version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1809,9 +1851,9 @@ checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
 
 [[package]]
 name = "lock_api"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a3c91c24eae6777794bb1997ad98bbb87daf92890acab859f7eaa4320333176"
+checksum = "0382880606dff6d15c9476c416d18690b72742aa7b605bb6dd6ec9030fbf07eb"
 dependencies = [
  "scopeguard",
 ]
@@ -1908,9 +1950,9 @@ checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 
 [[package]]
 name = "memchr"
-version = "2.3.4"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
 
 [[package]]
 name = "metal"
@@ -2254,6 +2296,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
+name = "pkg-config"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+
+[[package]]
 name = "pmutil"
 version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2327,7 +2375,7 @@ version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a152013215dca273577e18d2bf00fa862b89b24169fb78c4c95aeb07992c9cec"
 dependencies = [
- "unicode-xid 0.2.1",
+ "unicode-xid 0.2.2",
 ]
 
 [[package]]
@@ -2505,9 +2553,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8270314b5ccceb518e7e578952f0b72b88222d02e8f77f5ecf7abbb673539041"
+checksum = "85dd92e586f7355c633911e11f77f3d12f04b1b1bd76a198bd34ae3af8341ef2"
 dependencies = [
  "bitflags",
 ]
@@ -2526,9 +2574,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.23"
+version = "0.6.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5f089152e60f62d28b835fbff2cd2e8dc0baf1ac13343bef92ab7eed84548"
+checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
 [[package]]
 name = "relative-path"
@@ -2625,6 +2673,21 @@ dependencies = [
 ]
 
 [[package]]
+name = "rusqlite"
+version = "0.25.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbc783b7ddae608338003bac1fa00b6786a75a9675fbd8e87243ecfdea3f6ed2"
+dependencies = [
+ "bitflags",
+ "fallible-iterator",
+ "fallible-streaming-iterator",
+ "hashlink",
+ "libsqlite3-sys",
+ "memchr",
+ "smallvec",
+]
+
+[[package]]
 name = "rustc_version"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -3010,9 +3073,9 @@ dependencies = [
 
 [[package]]
 name = "swc_bundler"
-version = "0.32.5"
+version = "0.32.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a3fd9db5796f48c7db74c045838c77981aed155c47e8ecf7dca2f7c47408e70"
+checksum = "2c724be1aea9b099b11b2d57ab59e25ed8428c03d9daa8fdded8fa81d17b6d56"
 dependencies = [
  "ahash 0.7.2",
  "anyhow",
@@ -3076,9 +3139,9 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_codegen"
-version = "0.52.3"
+version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4bffd587bf624fc3ad732433704cc4ff415967ed9feed26accf2db9130237e09"
+checksum = "4f62df17607eee6c488fdd24d192911db862b2af68a6ea72e166bb699f8a417a"
 dependencies = [
  "bitflags",
  "num-bigint",
@@ -3132,7 +3195,7 @@ dependencies = [
  "swc_common",
  "swc_ecma_ast",
  "swc_ecma_visit",
- "unicode-xid 0.2.1",
+ "unicode-xid 0.2.2",
 ]
 
 [[package]]
@@ -3152,7 +3215,7 @@ dependencies = [
  "swc_ecma_transforms_typescript",
  "swc_ecma_utils",
  "swc_ecma_visit",
- "unicode-xid 0.2.1",
+ "unicode-xid 0.2.2",
 ]
 
 [[package]]
@@ -3176,9 +3239,9 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_transforms_optimization"
-version = "0.15.5"
+version = "0.15.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f187623203e84095337ea16b499ef6768819c3f2f7e3cdae24022135282dd3d"
+checksum = "70ae2bd352c1365d1c8f02c5016f729de6e1fb2fe03afd5c37a896468d1f20a4"
 dependencies = [
  "dashmap",
  "fxhash",
@@ -3217,9 +3280,9 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_transforms_react"
-version = "0.14.3"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da3cfd8e900a1f1e26ea705f4614717b3deceec40d4b2fd4b1dc65a2b90de066"
+checksum = "b13d80190e922c2f83edec85c40372cbc0dd14d15973447471c0885ca408ce78"
 dependencies = [
  "base64 0.13.0",
  "dashmap",
@@ -3267,7 +3330,7 @@ dependencies = [
  "swc_common",
  "swc_ecma_ast",
  "swc_ecma_visit",
- "unicode-xid 0.2.1",
+ "unicode-xid 0.2.2",
 ]
 
 [[package]]
@@ -3285,9 +3348,9 @@ dependencies = [
 
 [[package]]
 name = "swc_ecmascript"
-version = "0.31.3"
+version = "0.31.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45286c7e1199a0c9ef13951535f5c6f777228d26df2fcf2d2d81ef11d0f22e40"
+checksum = "9148743bf5d6dcc482fd4db219968b216bff61a475c7838e0f60e00886cfa2b4"
 dependencies = [
  "swc_ecma_ast",
  "swc_ecma_codegen",
@@ -3365,7 +3428,7 @@ checksum = "f3a1d708c221c5a612956ef9f75b37e454e88d1f7b899fbd3a18d4252012d663"
 dependencies = [
  "proc-macro2 1.0.26",
  "quote 1.0.9",
- "unicode-xid 0.2.1",
+ "unicode-xid 0.2.2",
 ]
 
 [[package]]
@@ -3640,9 +3703,9 @@ dependencies = [
 
 [[package]]
 name = "tracing"
-version = "0.1.25"
+version = "0.1.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01ebdc2bb4498ab1ab5f5b73c5803825e60199229ccba0698170e3be0e7f959f"
+checksum = "09adeb8c97449311ccd28a427f96fb563e7fd31aabf994189879d9da2394b89d"
 dependencies = [
  "cfg-if 1.0.0",
  "pin-project-lite",
@@ -3651,9 +3714,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.17"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
+checksum = "a9ff14f98b1a4b289c6248a023c1c2fa1491062964e9fed67ab29c4e4da4a052"
 dependencies = [
  "lazy_static",
 ]
@@ -3852,9 +3915,9 @@ checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 
 [[package]]
 name = "unicode-xid"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "untrusted"
@@ -3898,6 +3961,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "vcpkg"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbdbff6266a24120518560b5dc983096efb98462e51d0d68169895b237be3e5d"
+
+[[package]]
 name = "vec_map"
 version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/cli/build.rs b/cli/build.rs
index eb8a71c8c..116ce8167 100644
--- a/cli/build.rs
+++ b/cli/build.rs
@@ -16,6 +16,7 @@ use deno_runtime::deno_url;
 use deno_runtime::deno_web;
 use deno_runtime::deno_webgpu;
 use deno_runtime::deno_websocket;
+use deno_runtime::deno_webstorage;
 use regex::Regex;
 use std::collections::HashMap;
 use std::env;
@@ -71,6 +72,7 @@ fn create_compiler_snapshot(
   op_crate_libs.insert("deno.fetch", deno_fetch::get_declaration());
   op_crate_libs.insert("deno.webgpu", deno_webgpu::get_declaration());
   op_crate_libs.insert("deno.websocket", deno_websocket::get_declaration());
+  op_crate_libs.insert("deno.webstorage", deno_webstorage::get_declaration());
   op_crate_libs.insert("deno.crypto", deno_crypto::get_declaration());
 
   // ensure we invalidate the build properly.
@@ -291,6 +293,10 @@ fn main() {
     deno_websocket::get_declaration().display()
   );
   println!(
+    "cargo:rustc-env=DENO_WEBSTORAGE_LIB_PATH={}",
+    deno_webstorage::get_declaration().display()
+  );
+  println!(
     "cargo:rustc-env=DENO_CRYPTO_LIB_PATH={}",
     deno_crypto::get_declaration().display()
   );
diff --git a/cli/dts/lib.deno.window.d.ts b/cli/dts/lib.deno.window.d.ts
index b7eca1e24..3c985e641 100644
--- a/cli/dts/lib.deno.window.d.ts
+++ b/cli/dts/lib.deno.window.d.ts
@@ -4,6 +4,7 @@
 /// <reference lib="deno.ns" />
 /// <reference lib="deno.shared_globals" />
 /// <reference lib="deno.webgpu" />
+/// <reference lib="deno.webstorage" />
 /// <reference lib="esnext" />
 
 declare class Window extends EventTarget {
@@ -22,12 +23,16 @@ declare class Window extends EventTarget {
   navigator: Navigator;
   Location: typeof Location;
   location: Location;
+  localStorage: Storage;
+  sessionStorage: Storage;
 }
 
 declare var window: Window & typeof globalThis;
 declare var self: Window & typeof globalThis;
 declare var onload: ((this: Window, ev: Event) => any) | null;
 declare var onunload: ((this: Window, ev: Event) => any) | null;
+declare var localStorage: Storage;
+declare var sessionStorage: Storage;
 
 declare class Navigator {
   constructor();
diff --git a/cli/main.rs b/cli/main.rs
index d20462c96..43c1cd0b2 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -204,6 +204,14 @@ pub fn create_main_worker(
     no_color: !colors::use_color(),
     get_error_class_fn: Some(&crate::errors::get_error_class_name),
     location: program_state.flags.location.clone(),
+    location_data_dir: program_state.flags.location.clone().map(|loc| {
+      program_state
+        .dir
+        .root
+        .clone()
+        .join("location_data")
+        .join(checksum::gen(&[loc.to_string().as_bytes()]))
+    }),
     blob_url_store: program_state.blob_url_store.clone(),
   };
 
@@ -295,7 +303,7 @@ fn print_cache_info(
 
 pub fn get_types(unstable: bool) -> String {
   let mut types = format!(
-    "{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
+    "{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
     crate::tsc::DENO_NS_LIB,
     crate::tsc::DENO_CONSOLE_LIB,
     crate::tsc::DENO_URL_LIB,
@@ -304,6 +312,7 @@ pub fn get_types(unstable: bool) -> String {
     crate::tsc::DENO_FETCH_LIB,
     crate::tsc::DENO_WEBGPU_LIB,
     crate::tsc::DENO_WEBSOCKET_LIB,
+    crate::tsc::DENO_WEBSTORAGE_LIB,
     crate::tsc::DENO_CRYPTO_LIB,
     crate::tsc::SHARED_GLOBALS_LIB,
     crate::tsc::WINDOW_LIB,
diff --git a/cli/standalone.rs b/cli/standalone.rs
index 83879a163..e0b131eb8 100644
--- a/cli/standalone.rs
+++ b/cli/standalone.rs
@@ -191,6 +191,7 @@ pub async fn run(
     no_color: !colors::use_color(),
     get_error_class_fn: Some(&get_error_class_name),
     location: metadata.location,
+    location_data_dir: None,
     blob_url_store,
   };
   let mut worker =
diff --git a/cli/tsc.rs b/cli/tsc.rs
index e2fc80676..7abae5ca1 100644
--- a/cli/tsc.rs
+++ b/cli/tsc.rs
@@ -37,6 +37,8 @@ pub static DENO_FETCH_LIB: &str = include_str!(env!("DENO_FETCH_LIB_PATH"));
 pub static DENO_WEBGPU_LIB: &str = include_str!(env!("DENO_WEBGPU_LIB_PATH"));
 pub static DENO_WEBSOCKET_LIB: &str =
   include_str!(env!("DENO_WEBSOCKET_LIB_PATH"));
+pub static DENO_WEBSTORAGE_LIB: &str =
+  include_str!(env!("DENO_WEBSTORAGE_LIB_PATH"));
 pub static DENO_CRYPTO_LIB: &str = include_str!(env!("DENO_CRYPTO_LIB_PATH"));
 pub static SHARED_GLOBALS_LIB: &str =
   include_str!("dts/lib.deno.shared_globals.d.ts");
diff --git a/extensions/webstorage/01_webstorage.js b/extensions/webstorage/01_webstorage.js
new file mode 100644
index 000000000..a11d44068
--- /dev/null
+++ b/extensions/webstorage/01_webstorage.js
@@ -0,0 +1,190 @@
+((window) => {
+  const core = window.Deno.core;
+  const webidl = window.__bootstrap.webidl;
+
+  const _rid = Symbol("[[rid]]");
+
+  class Storage {
+    [_rid];
+
+    constructor() {
+      webidl.illegalConstructor();
+    }
+
+    get length() {
+      webidl.assertBranded(this, Storage);
+      return core.opSync("op_webstorage_length", this[_rid]);
+    }
+
+    key(index) {
+      webidl.assertBranded(this, Storage);
+      const prefix = "Failed to execute 'key' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      index = webidl.converters["unsigned long"](index, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      return core.opSync("op_webstorage_key", {
+        rid: this[_rid],
+        index,
+      });
+    }
+
+    setItem(key, value) {
+      webidl.assertBranded(this, Storage);
+      const prefix = "Failed to execute 'setItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 2, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+      value = webidl.converters.DOMString(value, {
+        prefix,
+        context: "Argument 2",
+      });
+
+      core.opSync("op_webstorage_set", {
+        rid: this[_rid],
+        keyName: key,
+        keyValue: value,
+      });
+    }
+
+    getItem(key) {
+      webidl.assertBranded(this, Storage);
+      const prefix = "Failed to execute 'getItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      return core.opSync("op_webstorage_get", {
+        rid: this[_rid],
+        keyName: key,
+      });
+    }
+
+    removeItem(key) {
+      webidl.assertBranded(this, Storage);
+      const prefix = "Failed to execute 'removeItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      core.opSync("op_webstorage_remove", {
+        rid: this[_rid],
+        keyName: key,
+      });
+    }
+
+    clear() {
+      webidl.assertBranded(this, Storage);
+      core.opSync("op_webstorage_clear", this[_rid]);
+    }
+  }
+
+  function createStorage(persistent) {
+    if (persistent) window.location;
+
+    const rid = core.opSync("op_webstorage_open", persistent);
+
+    const storage = webidl.createBranded(Storage);
+    storage[_rid] = rid;
+
+    const proxy = new Proxy(storage, {
+      deleteProperty(target, key) {
+        if (typeof key == "symbol") {
+          delete target[key];
+        } else {
+          target.removeItem(key);
+        }
+        return true;
+      },
+      defineProperty(target, key, descriptor) {
+        if (typeof key == "symbol") {
+          Object.defineProperty(target, key, descriptor);
+        } else {
+          target.setItem(key, descriptor.value);
+        }
+        return true;
+      },
+      get(target, key) {
+        if (typeof key == "symbol") return target[key];
+        if (key in target) {
+          return Reflect.get(...arguments);
+        } else {
+          return target.getItem(key) ?? undefined;
+        }
+      },
+      set(target, key, value) {
+        if (typeof key == "symbol") {
+          Object.defineProperty(target, key, {
+            value,
+            configurable: true,
+          });
+        } else {
+          target.setItem(key, value);
+        }
+        return true;
+      },
+      has(target, p) {
+        return (typeof target.getItem(p)) === "string";
+      },
+      ownKeys() {
+        return core.opSync("op_webstorage_iterate_keys", rid);
+      },
+      getOwnPropertyDescriptor(target, key) {
+        if (arguments.length === 1) {
+          return undefined;
+        }
+        if (key in target) {
+          return undefined;
+        }
+        const value = target.getItem(key);
+        if (value === null) {
+          return undefined;
+        }
+        return {
+          value,
+          enumerable: true,
+          configurable: true,
+          writable: true,
+        };
+      },
+    });
+
+    proxy[Symbol.for("Deno.customInspect")] = function (inspect) {
+      return `${this.constructor.name} ${
+        inspect({
+          length: this.length,
+          ...Object.fromEntries(Object.entries(proxy)),
+        })
+      }`;
+    };
+
+    return proxy;
+  }
+
+  let localStorage;
+  let sessionStorage;
+
+  window.__bootstrap.webStorage = {
+    localStorage() {
+      if (!localStorage) {
+        localStorage = createStorage(true);
+      }
+      return localStorage;
+    },
+    sessionStorage() {
+      if (!sessionStorage) {
+        sessionStorage = createStorage(false);
+      }
+      return sessionStorage;
+    },
+    Storage,
+  };
+})(this);
diff --git a/extensions/webstorage/Cargo.toml b/extensions/webstorage/Cargo.toml
new file mode 100644
index 000000000..acfaf6a16
--- /dev/null
+++ b/extensions/webstorage/Cargo.toml
@@ -0,0 +1,19 @@
+# Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+[package]
+name = "deno_webstorage"
+version = "0.1.0"
+edition = "2018"
+description = "Implementation of WebStorage API for Deno"
+authors = ["the Deno authors"]
+license = "MIT"
+readme = "README.md"
+repository = "https://github.com/denoland/deno"
+
+[lib]
+path = "lib.rs"
+
+[dependencies]
+deno_core = { version = "0.86.0", path = "../../core" }
+rusqlite = { version = "0.25.0", features = ["unlock_notify", "bundled"] }
+serde = { version = "1.0.125", features = ["derive"] }
diff --git a/extensions/webstorage/README.md b/extensions/webstorage/README.md
new file mode 100644
index 000000000..a0f8a0613
--- /dev/null
+++ b/extensions/webstorage/README.md
@@ -0,0 +1,5 @@
+# deno_webstorage
+
+This op crate implements the WebStorage spec in Deno.
+
+Spec: https://html.spec.whatwg.org/multipage/webstorage.html
diff --git a/extensions/webstorage/lib.deno_webstorage.d.ts b/extensions/webstorage/lib.deno_webstorage.d.ts
new file mode 100644
index 000000000..bf438e005
--- /dev/null
+++ b/extensions/webstorage/lib.deno_webstorage.d.ts
@@ -0,0 +1,42 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+// deno-lint-ignore-file no-explicit-any
+
+/// <reference no-default-lib="true" />
+/// <reference lib="esnext" />
+
+/** This Web Storage API interface provides access to a particular domain's session or local storage. It allows, for example, the addition, modification, or deletion of stored data items. */
+interface Storage {
+  /**
+   * Returns the number of key/value pairs currently present in the list associated with the object.
+   */
+  readonly length: number;
+  /**
+   * Empties the list associated with the object of all key/value pairs, if there are any.
+   */
+  clear(): void;
+  /**
+   * Returns the current value associated with the given key, or null if the given key does not exist in the list associated with the object.
+   */
+  getItem(key: string): string | null;
+  /**
+   * Returns the name of the nth key in the list, or null if n is greater than or equal to the number of key/value pairs in the object.
+   */
+  key(index: number): string | null;
+  /**
+   * Removes the key/value pair with the given key from the list associated with the object, if a key/value pair with the given key exists.
+   */
+  removeItem(key: string): void;
+  /**
+   * Sets the value of the pair identified by key to value, creating a new key/value pair if none existed for key previously.
+   *
+   * Throws a "QuotaExceededError" DOMException exception if the new value couldn't be set. (Setting could fail if, e.g., the user has disabled storage for the site, or if the quota has been exceeded.)
+   */
+  setItem(key: string, value: string): void;
+  [name: string]: any;
+}
+
+declare var Storage: {
+  prototype: Storage;
+  new (): Storage;
+};
diff --git a/extensions/webstorage/lib.rs b/extensions/webstorage/lib.rs
new file mode 100644
index 000000000..90ae0598a
--- /dev/null
+++ b/extensions/webstorage/lib.rs
@@ -0,0 +1,316 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::error::bad_resource_id;
+use deno_core::error::AnyError;
+use deno_core::include_js_files;
+use deno_core::op_sync;
+use deno_core::Extension;
+use deno_core::OpState;
+use deno_core::Resource;
+use deno_core::ZeroCopyBuf;
+use rusqlite::params;
+use rusqlite::Connection;
+use rusqlite::OptionalExtension;
+use serde::Deserialize;
+use std::borrow::Cow;
+use std::fmt;
+use std::path::PathBuf;
+
+#[derive(Clone)]
+struct LocationDataDir(PathBuf);
+
+pub fn init(location_data_dir: Option<PathBuf>) -> Extension {
+  Extension::builder()
+    .js(include_js_files!(
+      prefix "deno:extensions/webstorage",
+      "01_webstorage.js",
+    ))
+    .ops(vec![
+      ("op_webstorage_open", op_sync(op_webstorage_open)),
+      ("op_webstorage_length", op_sync(op_webstorage_length)),
+      ("op_webstorage_key", op_sync(op_webstorage_key)),
+      ("op_webstorage_set", op_sync(op_webstorage_set)),
+      ("op_webstorage_get", op_sync(op_webstorage_get)),
+      ("op_webstorage_remove", op_sync(op_webstorage_remove)),
+      ("op_webstorage_clear", op_sync(op_webstorage_clear)),
+      (
+        "op_webstorage_iterate_keys",
+        op_sync(op_webstorage_iterate_keys),
+      ),
+    ])
+    .state(move |state| {
+      if let Some(location_data_dir) = location_data_dir.clone() {
+        state.put(LocationDataDir(location_data_dir));
+      }
+      Ok(())
+    })
+    .build()
+}
+
+pub fn get_declaration() -> PathBuf {
+  PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("lib.deno_webstorage.d.ts")
+}
+
+struct WebStorageConnectionResource(Connection);
+
+impl Resource for WebStorageConnectionResource {
+  fn name(&self) -> Cow<str> {
+    "webStorage".into()
+  }
+}
+
+pub fn op_webstorage_open(
+  state: &mut OpState,
+  persistent: bool,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<u32, AnyError> {
+  let connection = if persistent {
+    let path = state.try_borrow::<LocationDataDir>().ok_or_else(|| {
+      DomExceptionNotSupportedError::new(
+        "LocalStorage is not supported in this context.",
+      )
+    })?;
+    std::fs::create_dir_all(&path.0)?;
+    Connection::open(path.0.join("local_storage"))?
+  } else {
+    Connection::open_in_memory()?
+  };
+
+  connection.execute(
+    "CREATE TABLE IF NOT EXISTS data (key VARCHAR UNIQUE, value VARCHAR)",
+    params![],
+  )?;
+
+  let rid = state
+    .resource_table
+    .add(WebStorageConnectionResource(connection));
+  Ok(rid)
+}
+
+pub fn op_webstorage_length(
+  state: &mut OpState,
+  rid: u32,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<u32, AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(rid)
+    .ok_or_else(bad_resource_id)?;
+
+  let mut stmt = resource.0.prepare("SELECT COUNT(*) FROM data")?;
+
+  let length: u32 = stmt.query_row(params![], |row| row.get(0))?;
+
+  Ok(length)
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct KeyArgs {
+  rid: u32,
+  index: u32,
+}
+
+pub fn op_webstorage_key(
+  state: &mut OpState,
+  args: KeyArgs,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<Option<String>, AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(args.rid)
+    .ok_or_else(bad_resource_id)?;
+
+  let mut stmt = resource
+    .0
+    .prepare("SELECT key FROM data LIMIT 1 OFFSET ?")?;
+
+  let key: Option<String> = stmt
+    .query_row(params![args.index], |row| row.get(0))
+    .optional()?;
+
+  Ok(key)
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SetArgs {
+  rid: u32,
+  key_name: String,
+  key_value: String,
+}
+
+pub fn op_webstorage_set(
+  state: &mut OpState,
+  args: SetArgs,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<(), AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(args.rid)
+    .ok_or_else(bad_resource_id)?;
+
+  let mut stmt = resource
+    .0
+    .prepare("SELECT SUM(pgsize) FROM dbstat WHERE name = 'data'")?;
+  let size: u32 = stmt.query_row(params![], |row| row.get(0))?;
+
+  if size >= 5000000 {
+    return Err(
+      DomExceptionQuotaExceededError::new("Exceeded maximum storage size")
+        .into(),
+    );
+  }
+
+  resource.0.execute(
+    "INSERT OR REPLACE INTO data (key, value) VALUES (?, ?)",
+    params![args.key_name, args.key_value],
+  )?;
+
+  Ok(())
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetArgs {
+  rid: u32,
+  key_name: String,
+}
+
+pub fn op_webstorage_get(
+  state: &mut OpState,
+  args: GetArgs,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<Option<String>, AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(args.rid)
+    .ok_or_else(bad_resource_id)?;
+
+  let mut stmt = resource.0.prepare("SELECT value FROM data WHERE key = ?")?;
+
+  let val = stmt
+    .query_row(params![args.key_name], |row| row.get(0))
+    .optional()?;
+
+  Ok(val)
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RemoveArgs {
+  rid: u32,
+  key_name: String,
+}
+
+pub fn op_webstorage_remove(
+  state: &mut OpState,
+  args: RemoveArgs,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<(), AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(args.rid)
+    .ok_or_else(bad_resource_id)?;
+
+  resource
+    .0
+    .execute("DELETE FROM data WHERE key = ?", params![args.key_name])?;
+
+  Ok(())
+}
+
+pub fn op_webstorage_clear(
+  state: &mut OpState,
+  rid: u32,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<(), AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(rid)
+    .ok_or_else(bad_resource_id)?;
+
+  resource.0.execute("DROP TABLE data", params![])?;
+  resource.0.execute(
+    "CREATE TABLE data (key VARCHAR UNIQUE, value VARCHAR)",
+    params![],
+  )?;
+
+  Ok(())
+}
+
+pub fn op_webstorage_iterate_keys(
+  state: &mut OpState,
+  rid: u32,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<Vec<String>, AnyError> {
+  let resource = state
+    .resource_table
+    .get::<WebStorageConnectionResource>(rid)
+    .ok_or_else(bad_resource_id)?;
+
+  let mut stmt = resource.0.prepare("SELECT key FROM data")?;
+
+  let keys = stmt
+    .query_map(params![], |row| row.get::<_, String>(0))?
+    .map(|r| r.unwrap())
+    .collect();
+
+  Ok(keys)
+}
+
+#[derive(Debug)]
+pub struct DomExceptionQuotaExceededError {
+  pub msg: String,
+}
+
+impl DomExceptionQuotaExceededError {
+  pub fn new(msg: &str) -> Self {
+    DomExceptionQuotaExceededError {
+      msg: msg.to_string(),
+    }
+  }
+}
+
+impl fmt::Display for DomExceptionQuotaExceededError {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    f.pad(&self.msg)
+  }
+}
+
+impl std::error::Error for DomExceptionQuotaExceededError {}
+
+pub fn get_quota_exceeded_error_class_name(
+  e: &AnyError,
+) -> Option<&'static str> {
+  e.downcast_ref::<DomExceptionQuotaExceededError>()
+    .map(|_| "DOMExceptionQuotaExceededError")
+}
+
+#[derive(Debug)]
+pub struct DomExceptionNotSupportedError {
+  pub msg: String,
+}
+
+impl DomExceptionNotSupportedError {
+  pub fn new(msg: &str) -> Self {
+    DomExceptionNotSupportedError {
+      msg: msg.to_string(),
+    }
+  }
+}
+
+impl fmt::Display for DomExceptionNotSupportedError {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    f.pad(&self.msg)
+  }
+}
+
+impl std::error::Error for DomExceptionNotSupportedError {}
+
+pub fn get_not_supported_error_class_name(
+  e: &AnyError,
+) -> Option<&'static str> {
+  e.downcast_ref::<DomExceptionNotSupportedError>()
+    .map(|_| "DOMExceptionNotSupportedError")
+}
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 8acd61f7e..4cefa23ee 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -29,6 +29,7 @@ deno_web = { path = "../extensions/web", version = "0.35.0" }
 deno_webgpu = { path = "../extensions/webgpu", version = "0.6.0" }
 deno_webidl = { path = "../extensions/webidl", version = "0.5.0" }
 deno_websocket = { path = "../extensions/websocket", version = "0.10.0" }
+deno_webstorage = { path = "../extensions/webstorage", version = "0.1.0" }
 
 [target.'cfg(windows)'.build-dependencies]
 winres = "0.1.11"
@@ -46,6 +47,7 @@ deno_web = { path = "../extensions/web", version = "0.35.0" }
 deno_webgpu = { path = "../extensions/webgpu", version = "0.6.0" }
 deno_webidl = { path = "../extensions/webidl", version = "0.5.0" }
 deno_websocket = { path = "../extensions/websocket", version = "0.10.0" }
+deno_webstorage = { path = "../extensions/webstorage", version = "0.1.0" }
 
 atty = "0.2.14"
 bytes = "1"
diff --git a/runtime/build.rs b/runtime/build.rs
index b6a9da582..e1cae7195 100644
--- a/runtime/build.rs
+++ b/runtime/build.rs
@@ -48,6 +48,7 @@ fn create_runtime_snapshot(snapshot_path: &Path, files: Vec<PathBuf>) {
       "".to_owned(),
       None,
     ),
+    deno_webstorage::init(None),
     deno_crypto::init(None),
     deno_webgpu::init(false),
     deno_timers::init::<deno_timers::NoTimersPermission>(),
diff --git a/runtime/errors.rs b/runtime/errors.rs
index f9ef947a3..c5e93d65b 100644
--- a/runtime/errors.rs
+++ b/runtime/errors.rs
@@ -157,6 +157,8 @@ fn get_nix_error_class(error: &nix::Error) -> &'static str {
 pub fn get_error_class_name(e: &AnyError) -> Option<&'static str> {
   deno_core::error::get_custom_error_class(e)
     .or_else(|| deno_webgpu::error::get_error_class_name(e))
+    .or_else(|| deno_webstorage::get_quota_exceeded_error_class_name(e))
+    .or_else(|| deno_webstorage::get_not_supported_error_class_name(e))
     .or_else(|| {
       e.downcast_ref::<dlopen::Error>()
         .map(get_dlopen_error_class)
diff --git a/runtime/examples/hello_runtime.rs b/runtime/examples/hello_runtime.rs
index 9c3cbd67e..80a258c17 100644
--- a/runtime/examples/hello_runtime.rs
+++ b/runtime/examples/hello_runtime.rs
@@ -40,6 +40,7 @@ async fn main() -> Result<(), AnyError> {
     no_color: false,
     get_error_class_fn: Some(&get_error_class_name),
     location: None,
+    location_data_dir: None,
     blob_url_store: BlobUrlStore::default(),
   };
 
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index fee7cd2d7..d2926bb1f 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -28,6 +28,7 @@ delete Object.prototype.__proto__;
   const fileReader = window.__bootstrap.fileReader;
   const webgpu = window.__bootstrap.webgpu;
   const webSocket = window.__bootstrap.webSocket;
+  const webStorage = window.__bootstrap.webStorage;
   const file = window.__bootstrap.file;
   const formData = window.__bootstrap.formData;
   const fetch = window.__bootstrap.fetch;
@@ -190,6 +191,18 @@ delete Object.prototype.__proto__;
         return new DOMException(msg, "OperationError");
       },
     );
+    core.registerErrorBuilder(
+      "DOMExceptionQuotaExceededError",
+      function DOMExceptionQuotaExceededError(msg) {
+        return new DOMException(msg, "QuotaExceededError");
+      },
+    );
+    core.registerErrorBuilder(
+      "DOMExceptionNotSupportedError",
+      function DOMExceptionNotSupportedError(msg) {
+        return new DOMException(msg, "NotSupported");
+      },
+    );
   }
 
   class Navigator {
@@ -351,6 +364,17 @@ delete Object.prototype.__proto__;
     alert: util.writable(prompt.alert),
     confirm: util.writable(prompt.confirm),
     prompt: util.writable(prompt.prompt),
+    localStorage: {
+      configurable: true,
+      enumerable: true,
+      get: webStorage.localStorage,
+    },
+    sessionStorage: {
+      configurable: true,
+      enumerable: true,
+      get: webStorage.sessionStorage,
+    },
+    Storage: util.nonEnumerable(webStorage.Storage),
   };
 
   const workerRuntimeGlobalProperties = {
diff --git a/runtime/lib.rs b/runtime/lib.rs
index 61b8fc77e..d45a72727 100644
--- a/runtime/lib.rs
+++ b/runtime/lib.rs
@@ -10,6 +10,7 @@ pub use deno_web;
 pub use deno_webgpu;
 pub use deno_webidl;
 pub use deno_websocket;
+pub use deno_webstorage;
 
 pub mod colors;
 pub mod errors;
diff --git a/runtime/worker.rs b/runtime/worker.rs
index b4c27b4f4..ab54e2153 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -69,6 +69,7 @@ pub struct WorkerOptions {
   pub no_color: bool,
   pub get_error_class_fn: Option<GetErrorClassFn>,
   pub location: Option<Url>,
+  pub location_data_dir: Option<std::path::PathBuf>,
   pub blob_url_store: BlobUrlStore,
 }
 
@@ -104,6 +105,7 @@ impl MainWorker {
         options.user_agent.clone(),
         options.ca_data.clone(),
       ),
+      deno_webstorage::init(options.location_data_dir.clone()),
       deno_crypto::init(options.seed),
       deno_webgpu::init(options.unstable),
       deno_timers::init::<Permissions>(),
@@ -291,6 +293,7 @@ mod tests {
       no_color: true,
       get_error_class_fn: None,
       location: None,
+      location_data_dir: None,
       blob_url_store: BlobUrlStore::default(),
     };
 
diff --git a/tools/wpt.ts b/tools/wpt.ts
index e7da43e64..13f8b6467 100755
--- a/tools/wpt.ts
+++ b/tools/wpt.ts
@@ -34,6 +34,10 @@ import {
   red,
   yellow,
 } from "https://deno.land/std@0.84.0/fmt/colors.ts";
+import {
+  writeAll,
+  writeAllSync,
+} from "https://deno.land/std@0.95.0/io/util.ts";
 import { saveExpectation } from "./wpt/utils.ts";
 
 const command = Deno.args[0];
@@ -104,7 +108,7 @@ async function setup() {
           throw err;
         }
       });
-      await Deno.writeAll(
+      await writeAll(
         file,
         new TextEncoder().encode(
           "\n\n# Configured for Web Platform Tests (Deno)\n" + entries,
@@ -150,7 +154,7 @@ async function run() {
     rest.length == 0 ? undefined : rest,
     expectation,
   );
-  assertAllExpectationsHaveTests(expectation, tests);
+  assertAllExpectationsHaveTests(expectation, tests, rest);
   console.log(`Going to run ${tests.length} test files.`);
 
   const results = await runWithTestUtil(false, async () => {
@@ -182,6 +186,7 @@ async function run() {
 function assertAllExpectationsHaveTests(
   expectation: Expectation,
   testsToRun: TestToRun[],
+  filter?: string[],
 ): void {
   const tests = new Set(testsToRun.map((t) => t.path));
   const missingTests: string[] = [];
@@ -189,6 +194,12 @@ function assertAllExpectationsHaveTests(
   function walk(parentExpectation: Expectation, parent: string) {
     for (const key in parentExpectation) {
       const path = `${parent}/${key}`;
+      if (
+        filter &&
+        !filter.find((filter) => path.substring(1).startsWith(filter))
+      ) {
+        continue;
+      }
       const expectation = parentExpectation[key];
       if (typeof expectation == "boolean" || Array.isArray(expectation)) {
         if (!tests.has(path)) {
@@ -422,7 +433,7 @@ function analyzeTestResult(
 function reportVariation(result: TestResult, expectation: boolean | string[]) {
   if (result.status !== 0) {
     console.log(`test stderr:`);
-    Deno.writeAllSync(Deno.stdout, new TextEncoder().encode(result.stderr));
+    writeAllSync(Deno.stdout, new TextEncoder().encode(result.stderr));
 
     const expectFail = expectation === false;
     console.log(
@@ -508,7 +519,7 @@ function createReportTestCase(expectation: boolean | string[]) {
         break;
     }
 
-    console.log(simpleMessage);
+    writeAllSync(Deno.stdout, new TextEncoder().encode(simpleMessage + "\n"));
   };
 }
 
@@ -536,7 +547,12 @@ function discoverTestsToRun(
         ) {
           if (!path) continue;
           const url = new URL(path, "http://web-platform.test:8000");
-          if (!url.pathname.endsWith(".any.html")) continue;
+          if (
+            !url.pathname.endsWith(".any.html") &&
+            !url.pathname.endsWith(".window.html")
+          ) {
+            continue;
+          }
           const finalPath = url.pathname + url.search;
 
           const split = finalPath.split("/");
diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index 983f73e53..afdc0cb1f 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -1064,6 +1064,66 @@
       }
     }
   },
+  "webstorage": {
+    "defineProperty.window.html": true,
+    "set.window.html": true,
+    "storage_enumerate.window.html": true,
+    "storage_in.window.html": true,
+    "event_constructor.window.html": false,
+    "event_initstorageevent.window.html": false,
+    "missing_arguments.window.html": true,
+    "storage_builtins.window.html": true,
+    "storage_clear.window.html": true,
+    "storage_functions_not_overwritten.window.html": true,
+    "storage_getitem.window.html": true,
+    "storage_indexing.window.html": true,
+    "storage_key.window.html": true,
+    "storage_key_empty_string.window.html": true,
+    "storage_length.window.html": true,
+    "storage_local_setitem_quotaexceedederr.window.html": true,
+    "storage_local_window_open.window.html": false,
+    "storage_removeitem.window.html": true,
+    "storage_session_setitem_quotaexceedederr.window.html": true,
+    "storage_session_window_noopener.window.html": false,
+    "storage_session_window_open.window.html": false,
+    "storage_set_value_enumerate.window.html": true,
+    "storage_setitem.window.html": [
+      "localStorage[\"\ud800\"]",
+      "localStorage[] = \"\ud800\"",
+      "localStorage[\"\udbff\"]",
+      "localStorage[] = \"\udbff\"",
+      "localStorage[\"\udc00\"]",
+      "localStorage[] = \"\udc00\"",
+      "localStorage[\"\udfff\"]",
+      "localStorage[] = \"\udfff\"",
+      "localStorage[\"\\ufffd\"]",
+      "localStorage[] = \"\\ufffd\"",
+      "localStorage[\"\ud83ca\"]",
+      "localStorage[] = \"\ud83ca\"",
+      "localStorage[\"a\udf4d\"]",
+      "localStorage[] = \"a\udf4d\"",
+      "sessionStorage[\"\ud800\"]",
+      "sessionStorage[] = \"\ud800\"",
+      "sessionStorage[\"\udbff\"]",
+      "sessionStorage[] = \"\udbff\"",
+      "sessionStorage[\"\udc00\"]",
+      "sessionStorage[] = \"\udc00\"",
+      "sessionStorage[\"\udfff\"]",
+      "sessionStorage[] = \"\udfff\"",
+      "sessionStorage[\"\\ufffd\"]",
+      "sessionStorage[] = \"\\ufffd\"",
+      "sessionStorage[\"\ud83ca\"]",
+      "sessionStorage[] = \"\ud83ca\"",
+      "sessionStorage[\"a\udf4d\"]",
+      "sessionStorage[] = \"a\udf4d\""
+    ],
+    "storage_string_conversion.window.html": true,
+    "storage_supported_property_names.window.html": true,
+    "symbol-props.window.html": [
+      "localStorage: defineProperty not configurable",
+      "sessionStorage: defineProperty not configurable"
+    ]
+  },
   "xhr": {
     "formdata": {
       "append.any.html": true,