diff --git a/.github/workflows/build-wasm.yml b/.github/workflows/build-wasm.yml
new file mode 100644
index 00000000..06b57c3d
--- /dev/null
+++ b/.github/workflows/build-wasm.yml
@@ -0,0 +1,24 @@
+name: Build WASM
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - src/**
+      - configure*
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build wasm package
+        uses: r-wasm/actions/build-rwasm@main
+        with:
+          packages: |
+            local::.
diff --git a/src/Makevars.in b/src/Makevars.in
index 513f9bb4..dfa0ead0 100644
--- a/src/Makevars.in
+++ b/src/Makevars.in
@@ -10,6 +10,10 @@ PKG_LIBS = -L$(LIBDIR) -lr_polars
 
 CARGO_BUILD_ARGS = --lib --profile $(PROFILE) --manifest-path=./rust/Cargo.toml --target-dir $(TARGET_DIR)
 
+# Some features should be removed when building for WASM, as like Python Polars
+# <https://github.com/pola-rs/polars/blob/93ceaccdac6f05c9b07a5117f3a4a90c238dbd29/.github/workflows/test-pyodide.yml#L40-L45>
+WASM_INCOMPATIBLE_FEATURES = parquet|async|json|extract_jsonpath|cloud|polars_cloud|tokio|clipboard|decompress|new_streaming
+
 all: C_clean
 
 $(SHLIB): $(STATLIB)
@@ -22,6 +26,9 @@ $(STATLIB):
 	  if [ "$(TARGET)" != "wasm32-unknown-emscripten" ]; then \
 	    cargo build $(CARGO_BUILD_ARGS); \
 	  else \
+		sed -E -i \
+			-e "/^\s*\"($(WASM_INCOMPATIBLE_FEATURES))\",$$/d" \
+			./rust/Cargo.toml && \
 	    export CC="$(CC)" && \
 	    export CFLAGS="$(CFLAGS)" && \
 	    export CARGO_PROFILE_DEV_PANIC="abort" && \
diff --git a/src/rust/Cargo.lock b/src/rust/Cargo.lock
index 42ec0610..ac582ce0 100644
--- a/src/rust/Cargo.lock
+++ b/src/rust/Cargo.lock
@@ -121,18 +121,18 @@ checksum = "c7c24de15d275a1ecfd47a380fb4d5ec9bfe0933f309ed5e705b775596a3574d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
 name = "async-trait"
-version = "0.1.85"
+version = "0.1.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f934833b4b7233644e5848f235df3f57ed8c80f1528a26c3dfa13d2147fa056"
+checksum = "721cae7de5c34fbb2acd27e21e6d2cf7b886dce0c27388d46c4e6c47ea4318dd"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -194,9 +194,9 @@ dependencies = [
 
 [[package]]
 name = "bitflags"
-version = "2.7.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1be3f42a67d6d345ecd59f675f3f012d6974981560836e938c22b424b85ce1be"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 dependencies = [
  "serde",
 ]
@@ -258,7 +258,7 @@ checksum = "3fa76293b4f7bb636ab88fd78228235b5248b4d05cc589aed610f954af5d7c7a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -287,9 +287,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.2.8"
+version = "1.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad0cf6e91fde44c773c6ee7ec6bba798504641a8bc2eb7e37a04ffbf4dfaa55a"
+checksum = "c31a0499c1dc64f458ad13872de75c0eb7e3fdb0e67964610c914b034fc5956e"
 dependencies = [
  "jobserver",
  "libc",
@@ -383,9 +383,9 @@ dependencies = [
 
 [[package]]
 name = "compact_str"
-version = "0.8.1"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b79c4069c6cad78e2e0cdfcbd26275770669fb39fd308a752dc110e83b9af32"
+checksum = "6050c3a16ddab2e412160b31f2c871015704239bca62f72f6e5f0be631d3f644"
 dependencies = [
  "castaway",
  "cfg-if",
@@ -506,7 +506,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -533,7 +533,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -542,16 +542,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
-[[package]]
-name = "erased-serde"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24e2389d65ab4fab27dc2a5de7b191e1f6617d1f1c8855c0dc569c94a4cbb18d"
-dependencies = [
- "serde",
- "typeid",
-]
-
 [[package]]
 name = "errno"
 version = "0.3.10"
@@ -698,7 +688,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -765,9 +755,9 @@ checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
 
 [[package]]
 name = "glob"
-version = "0.3.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8d1add55171497b4705a648c6b583acafb01d58050a51727785f0b2c8e0a2b2"
+checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 
 [[package]]
 name = "h2"
@@ -1095,7 +1085,7 @@ checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -1237,9 +1227,9 @@ dependencies = [
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.4.15"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d26c52dbd32dccf2d10cac7725f8eae5296885fb5703b261f7d0a0739ec807ab"
+checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
 [[package]]
 name = "litemap"
@@ -1259,12 +1249,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.24"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d6ea2a48c204030ee31a7d7fc72c93294c92fe87ecb1789881c9543516e1a0d"
-dependencies = [
- "value-bag",
-]
+checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
 [[package]]
 name = "loom"
@@ -1283,9 +1270,9 @@ dependencies = [
 
 [[package]]
 name = "lz4"
-version = "1.28.1"
+version = "1.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a20b523e860d03443e98350ceaac5e71c6ba89aea7d960769ec3ce37f4de5af4"
+checksum = "4d1febb2b4a79ddd1980eede06a8f7902197960aa0383ffcfdd62fe723036725"
 dependencies = [
  "lz4-sys",
 ]
@@ -1439,9 +1426,9 @@ dependencies = [
 
 [[package]]
 name = "object_store"
-version = "0.11.2"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cfccb68961a56facde1163f9319e0d15743352344e7808a11795fb99698dcaf"
+checksum = "6eb4c22c6154a1e759d7099f9ffad7cc5ef8245f9efbab4a41b92623079c82f3"
 dependencies = [
  "async-trait",
  "base64",
@@ -1524,18 +1511,18 @@ checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "phf"
-version = "0.11.3"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+checksum = "ade2d8b8f33c7333b51bcf0428d37e217e9f32192ae4772156f65063b8ce03dc"
 dependencies = [
  "phf_shared",
 ]
 
 [[package]]
 name = "phf_codegen"
-version = "0.11.3"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aef8048c789fa5e851558d709946d6d79a8ff88c0440c587967f8e94bfb1216a"
+checksum = "e8d39688d359e6b34654d328e262234662d16cc0f60ec8dcbe5e718709342a5a"
 dependencies = [
  "phf_generator",
  "phf_shared",
@@ -1543,9 +1530,9 @@ dependencies = [
 
 [[package]]
 name = "phf_generator"
-version = "0.11.3"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+checksum = "48e4cc64c2ad9ebe670cb8fd69dd50ae301650392e81c05f9bfcb2d5bdbc24b0"
 dependencies = [
  "phf_shared",
  "rand",
@@ -1553,18 +1540,18 @@ dependencies = [
 
 [[package]]
 name = "phf_shared"
-version = "0.11.3"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+checksum = "90fcb95eef784c2ac79119d1dd819e162b5da872ce6f3c3abe1e8ca1c082f72b"
 dependencies = [
  "siphasher",
 ]
 
 [[package]]
 name = "pin-project-lite"
-version = "0.2.16"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b3cff922bd51709b605d9ead9aa71031d81447142d828eb4a6eba76fe619f9b"
+checksum = "915a1e146535de9163f3987b8944ed8cf49a18bb0056bcebcdcece385cece4ff"
 
 [[package]]
 name = "pin-utils"
@@ -2131,9 +2118,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.93"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60946a68e5f9d28b0dc1c21bb8a97ee7d018a8b322fa57838ba31cc878e22d99"
+checksum = "37d3544b3f2748c54e147655edb5025752e2303145b5aefb3c3ea2c78b973bb0"
 dependencies = [
  "unicode-ident",
 ]
@@ -2149,9 +2136,9 @@ dependencies = [
 
 [[package]]
 name = "quick-xml"
-version = "0.37.2"
+version = "0.36.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "165859e9e55f79d67b96c5d96f4e88b6f2695a1972849c15a6a3f5c59fc2c003"
+checksum = "f7649a7b4df05aed9ea7ec6f628c67c9953a43869b8bc50929569b2999d443fe"
 dependencies = [
  "memchr",
  "serde",
@@ -2211,9 +2198,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.38"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4dccaaaf89514f546c693ddc140f729f958c247918a13380cccc6078391acc"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
  "proc-macro2",
 ]
@@ -2323,7 +2310,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "76009fbe0614077fc1a2ce255e3a1881a2e3a3527097d5dc6d8212c585e7e38b"
 dependencies = [
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2352,7 +2339,7 @@ checksum = "bcc303e793d3734489387d205e9b186fac9c6cfacedd98cbb2e8a5943595f3e6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2401,9 +2388,9 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
 [[package]]
 name = "reqwest"
-version = "0.12.12"
+version = "0.12.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43e734407157c3c2034e0258f5e4473ddb361b1e85f95a66690d67264d7cd1da"
+checksum = "a77c62af46e79de0a562e1a9849205ffcb7fc1238876e9bd743357570e04046f"
 dependencies = [
  "base64",
  "bytes",
@@ -2435,7 +2422,6 @@ dependencies = [
  "tokio",
  "tokio-rustls",
  "tokio-util",
- "tower",
  "tower-service",
  "url",
  "wasm-bindgen",
@@ -2474,9 +2460,9 @@ checksum = "c7fb8039b3032c191086b10f11f319a6e99e1e82889c5cc6046f515c9db1d497"
 
 [[package]]
 name = "rustix"
-version = "0.38.43"
+version = "0.38.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a78891ee6bf2340288408954ac787aa063d8e8817e9f53abb37c695c6d834ef6"
+checksum = "f93dc38ecbab2eb790ff964bb77fa94faf256fd3e73285fd7ba0903b76bedb85"
 dependencies = [
  "bitflags",
  "errno",
@@ -2487,9 +2473,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.21"
+version = "0.23.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f287924602bf649d949c63dc8ac8b235fa5387d394020705b80c4eb597ce5b8"
+checksum = "5065c3f250cbd332cd894be57c40fa52387247659b14a2d6041d121547903b1b"
 dependencies = [
  "once_cell",
  "ring",
@@ -2542,9 +2528,9 @@ dependencies = [
 
 [[package]]
 name = "rustversion"
-version = "1.0.19"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7c45b9784283f1b2e7fb61b42047c2fd678ef0960d4f6f1eba131594cc369d4"
+checksum = "0e819f2bc632f285be6d7cd36e25940d45b2391dd6d9b939e79de557f7014248"
 
 [[package]]
 name = "ryu"
@@ -2582,7 +2568,7 @@ checksum = "79236364f88e6dd77ceb6663569c47cb8b94cf855d06b929d5f9a03fe7202339"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2600,7 +2586,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "savvy-bindgen",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2626,9 +2612,9 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "security-framework"
-version = "3.2.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "271720403f46ca04f7ba6f55d438f8bd878d6b8ca0a1046e8228c4145bcbb316"
+checksum = "81d3f8c9bfcc3cbb6b0179eb57042d75b1582bdc65c3cb95f3fa999509c03cbc"
 dependencies = [
  "bitflags",
  "core-foundation",
@@ -2639,9 +2625,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.14.0"
+version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49db231d56a190491cb4aeda9527f1ad45345af50b0851622a7adb8c03b01c32"
+checksum = "1863fd3768cd83c56a7f60faa4dc0d403f1b6df0a38c3c25f44b7894e45370d5"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -2649,38 +2635,29 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.217"
+version = "1.0.216"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02fc4265df13d6fa1d00ecff087228cc0a2b5f3c0e87e258d8b94a156e984c70"
+checksum = "0b9781016e935a97e8beecf0c933758c97a5520d32930e460142b4cd80c6338e"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.217"
+version = "1.0.216"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a9bf7cf98d04a2b28aead066b7496853d4779c9cc183c440dbac457641e19a0"
+checksum = "46f859dbbf73865c6627ed570e78961cd3ac92407a2d117204c49232485da55e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
-]
-
-[[package]]
-name = "serde_fmt"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1d4ddca14104cd60529e8c7f7ba71a2c8acd8f7f5cfcdc2faf97eeb7c3010a4"
-dependencies = [
- "serde",
+ "syn 2.0.91",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.135"
+version = "1.0.134"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b0d7ba2887406110130a978386c4e1befb98c674b4fba677954e4db976630d9"
+checksum = "d00f4175c42ee48b15416f6193a959ba3a0d67fc699a0db9ad12df9f83991c7d"
 dependencies = [
  "indexmap",
  "itoa",
@@ -2741,9 +2718,9 @@ checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"
 
 [[package]]
 name = "siphasher"
-version = "1.0.1"
+version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
+checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
 [[package]]
 name = "slab"
@@ -2787,7 +2764,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2895,7 +2872,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -2904,84 +2881,6 @@ version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
-[[package]]
-name = "sval"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6dc0f9830c49db20e73273ffae9b5240f63c42e515af1da1fceefb69fceafd8"
-
-[[package]]
-name = "sval_buffer"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "429922f7ad43c0ef8fd7309e14d750e38899e32eb7e8da656ea169dd28ee212f"
-dependencies = [
- "sval",
- "sval_ref",
-]
-
-[[package]]
-name = "sval_dynamic"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68f16ff5d839396c11a30019b659b0976348f3803db0626f736764c473b50ff4"
-dependencies = [
- "sval",
-]
-
-[[package]]
-name = "sval_fmt"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c01c27a80b6151b0557f9ccbe89c11db571dc5f68113690c1e028d7e974bae94"
-dependencies = [
- "itoa",
- "ryu",
- "sval",
-]
-
-[[package]]
-name = "sval_json"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0deef63c70da622b2a8069d8600cf4b05396459e665862e7bdb290fd6cf3f155"
-dependencies = [
- "itoa",
- "ryu",
- "sval",
-]
-
-[[package]]
-name = "sval_nested"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a39ce5976ae1feb814c35d290cf7cf8cd4f045782fe1548d6bc32e21f6156e9f"
-dependencies = [
- "sval",
- "sval_buffer",
- "sval_ref",
-]
-
-[[package]]
-name = "sval_ref"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb7c6ee3751795a728bc9316a092023529ffea1783499afbc5c66f5fabebb1fa"
-dependencies = [
- "sval",
-]
-
-[[package]]
-name = "sval_serde"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a5572d0321b68109a343634e3a5d576bf131b82180c6c442dee06349dfc652a"
-dependencies = [
- "serde",
- "sval",
- "sval_nested",
-]
-
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -2995,9 +2894,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.96"
+version = "2.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5d0adab1ae378d7f53bdebc67a39f1f151407ef230f0ce2883572f5d8985c80"
+checksum = "d53cbcb5a243bd33b7858b1d7f4aca2153490815872d86d955d6ea29f743c035"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3021,7 +2920,7 @@ checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3045,22 +2944,22 @@ checksum = "c1bbb9f3c5c463a01705937a24fdabc5047929ac764b2d5b9cf681c1f5041ed5"
 
 [[package]]
 name = "thiserror"
-version = "2.0.11"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d452f284b73e6d76dd36758a0c8684b1d5be31f92b89d07fd5822175732206fc"
+checksum = "f072643fd0190df67a8bab670c20ef5d8737177d6ac6b2e9a236cb096206b2cc"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.11"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26afc1baea8a989337eeb52b6e72a039780ce45c3edfcc9c5b9d112feeb173c2"
+checksum = "7b50fa271071aae2e6ee85f842e2e28ba8cd2c5fb67f11fcb1fd70b276f9e7d4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3100,9 +2999,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.43.0"
+version = "1.42.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d61fa4ffa3de412bfea335c6ecff681de2b609ba3c77ef3e00e521813a9ed9e"
+checksum = "5cec9b21b0450273377fc97bd4c33a8acffc8c996c987a7c5b319a0083707551"
 dependencies = [
  "backtrace",
  "bytes",
@@ -3116,13 +3015,13 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "2.5.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3148,27 +3047,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "tower"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d039ad9159c98b70ecfd540b2573b97f7f52c3e8d9f8ad57a24b916a536975f9"
-dependencies = [
- "futures-core",
- "futures-util",
- "pin-project-lite",
- "sync_wrapper",
- "tokio",
- "tower-layer",
- "tower-service",
-]
-
-[[package]]
-name = "tower-layer"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "121c2a6cda46980bb0fcd1647ffaf6cd3fc79a013de288782836f6df9c48780e"
-
 [[package]]
 name = "tower-service"
 version = "0.3.3"
@@ -3194,7 +3072,7 @@ checksum = "395ae124c09f9e6918a2310af6038fba074bcf474ac352496d5910dd59a2226d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3242,12 +3120,6 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
-[[package]]
-name = "typeid"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e13db2e0ccd5e14a544e8a246ba2312cd25223f616442d7f2cb0e3db614236e"
-
 [[package]]
 name = "unicode-ident"
 version = "1.0.14"
@@ -3306,9 +3178,9 @@ checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
 [[package]]
 name = "uuid"
-version = "1.11.1"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b913a3b5fe84142e269d63cc62b64319ccaf89b748fc31fe025177f767a756c4"
+checksum = "f8c5f0a0af699448548ad1a2fbf920fb4bee257eae39953ba95cb84891a0446a"
 dependencies = [
  "getrandom",
 ]
@@ -3319,42 +3191,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
-[[package]]
-name = "value-bag"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ef4c4aa54d5d05a279399bfa921ec387b7aba77caf7a682ae8d86785b8fdad2"
-dependencies = [
- "value-bag-serde1",
- "value-bag-sval2",
-]
-
-[[package]]
-name = "value-bag-serde1"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4bb773bd36fd59c7ca6e336c94454d9c66386416734817927ac93d81cb3c5b0b"
-dependencies = [
- "erased-serde",
- "serde",
- "serde_fmt",
-]
-
-[[package]]
-name = "value-bag-sval2"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53a916a702cac43a88694c97657d449775667bcd14b70419441d05b7fea4a83a"
-dependencies = [
- "sval",
- "sval_buffer",
- "sval_dynamic",
- "sval_fmt",
- "sval_json",
- "sval_ref",
- "sval_serde",
-]
-
 [[package]]
 name = "value-trait"
 version = "0.10.1"
@@ -3419,7 +3255,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
  "wasm-bindgen-shared",
 ]
 
@@ -3454,7 +3290,7 @@ checksum = "30d7a95b763d3c45903ed6c81f156801839e5ee968bb07e534c44df0fcd330c2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -3577,7 +3413,7 @@ checksum = "9107ddc059d5b6fbfbffdfa7a7fe3e22a226def0b2608f72e9d552763d3e1ad7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3588,7 +3424,7 @@ checksum = "29bee4b38ea3cde66011baa44dba677c432a78593e202392d1e9070cf2a7fca7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3783,9 +3619,9 @@ checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
 
 [[package]]
 name = "xxhash-rust"
-version = "0.8.15"
+version = "0.8.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdd20c5420375476fbd4394763288da7eb0cc0b8c11deed431a91562af7335d3"
+checksum = "d7d48f1b18be023c95e7b75f481cac649d74be7c507ff4a407c55cfb957f7934"
 
 [[package]]
 name = "yoke"
@@ -3807,7 +3643,7 @@ checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
  "synstructure",
 ]
 
@@ -3829,7 +3665,7 @@ checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -3849,7 +3685,7 @@ checksum = "595eed982f7d355beb85837f651fa22e90b3c044842dc7f2c2842c086f295808"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
  "synstructure",
 ]
 
@@ -3878,7 +3714,7 @@ checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 2.0.91",
 ]
 
 [[package]]
diff --git a/src/rust/Cargo.toml b/src/rust/Cargo.toml
index 3427a72c..8644f9da 100644
--- a/src/rust/Cargo.toml
+++ b/src/rust/Cargo.toml
@@ -110,10 +110,10 @@ features = [
     "unique_counts"
 ]
 
-[target.'cfg(all(any(not(target_family = "unix"), allocator = "mimalloc")))'.dependencies]
+[target.'cfg(all(any(not(target_family = "unix"), target_os = "emscripten", allocator = "mimalloc")))'.dependencies]
 mimalloc = { version = "0.1", default-features = false }
 
-[target.'cfg(all(target_family = "unix", not(target_os = "macos"), not(allocator = "mimalloc")))'.dependencies]
+[target.'cfg(all(target_family = "unix", not(target_os = "macos"), not(target_os = "emscripten"), not(allocator = "mimalloc")))'.dependencies]
 jemallocator = { version = "0.5", features = [
     "disable_initial_exec_tls",
     "background_threads",
diff --git a/src/rust/src/allocator.rs b/src/rust/src/allocator.rs
index 7af63bb2..985a77ac 100644
--- a/src/rust/src/allocator.rs
+++ b/src/rust/src/allocator.rs
@@ -1,12 +1,28 @@
-#[cfg(all(target_family = "unix", not(allocator = "mimalloc"),))]
+#[cfg(all(
+    target_family = "unix",
+    not(target_os = "emscripten"),
+    not(allocator = "mimalloc"),
+))]
 use jemallocator::Jemalloc;
-#[cfg(all(any(not(target_family = "unix"), allocator = "mimalloc"),))]
+#[cfg(all(any(
+    not(target_family = "unix"),
+    target_os = "emscripten",
+    allocator = "mimalloc"
+),))]
 use mimalloc::MiMalloc;
 
 #[global_allocator]
-#[cfg(all(not(allocator = "mimalloc"), target_family = "unix",))]
+#[cfg(all(
+    not(allocator = "mimalloc"),
+    target_family = "unix",
+    not(target_os = "emscripten"),
+))]
 static ALLOC: Jemalloc = Jemalloc;
 
 #[global_allocator]
-#[cfg(all(any(not(target_family = "unix"), allocator = "mimalloc"),))]
+#[cfg(all(any(
+    not(target_family = "unix"),
+    target_os = "emscripten",
+    allocator = "mimalloc"
+),))]
 static ALLOC: MiMalloc = MiMalloc;
diff --git a/src/rust/src/conversion/mod.rs b/src/rust/src/conversion/mod.rs
index 7e4c2d01..0d6a0ab7 100644
--- a/src/rust/src/conversion/mod.rs
+++ b/src/rust/src/conversion/mod.rs
@@ -665,6 +665,8 @@ pub(crate) fn parse_cloud_options(
     Ok(out)
 }
 
+// TODO: Refactor with adding `parquet` feature as like Python Polars
+#[cfg(not(target_arch = "wasm32"))]
 impl TryFrom<&str> for Wrap<ParallelStrategy> {
     type Error = String;
 
diff --git a/src/rust/src/expr/string.rs b/src/rust/src/expr/string.rs
index 6fd09737..dc980391 100644
--- a/src/rust/src/expr/string.rs
+++ b/src/rust/src/expr/string.rs
@@ -134,13 +134,21 @@ impl PlRExpr {
             .into())
     }
 
+    #[allow(unused_variables)]
     fn str_json_path_match(&self, pat: &PlRExpr) -> Result<Self> {
-        Ok(self
-            .inner
-            .clone()
-            .str()
-            .json_path_match(pat.inner.clone())
-            .into())
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            Ok(self
+                .inner
+                .clone()
+                .str()
+                .json_path_match(pat.inner.clone())
+                .into())
+        }
+        #[cfg(target_arch = "wasm32")]
+        {
+            Err(RPolarsErr::Other(format!("Not supported in WASM")).into())
+        }
     }
 
     // fn str_json_decode(&self, dtype: &PlRExpr, infer_schema_len: &PlRExpr) -> Result<Self> {
diff --git a/src/rust/src/expr/struct.rs b/src/rust/src/expr/struct.rs
index 096c316e..c187c82b 100644
--- a/src/rust/src/expr/struct.rs
+++ b/src/rust/src/expr/struct.rs
@@ -26,8 +26,16 @@ impl PlRExpr {
             .into())
     }
 
+    #[allow(unused_variables)]
     fn struct_json_encode(&self) -> Result<Self> {
-        Ok(self.inner.clone().struct_().json_encode().into())
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            Ok(self.inner.clone().struct_().json_encode().into())
+        }
+        #[cfg(target_arch = "wasm32")]
+        {
+            Err(RPolarsErr::Other(format!("Not supported in WASM")).into())
+        }
     }
 
     fn struct_with_fields(&self, fields: ListSexp) -> Result<Self> {
diff --git a/src/rust/src/lazyframe/general.rs b/src/rust/src/lazyframe/general.rs
index 4ac1d665..db7c2c07 100644
--- a/src/rust/src/lazyframe/general.rs
+++ b/src/rust/src/lazyframe/general.rs
@@ -106,6 +106,8 @@ impl PlRLazyFrame {
         }
 
         let ldf = self.ldf.clone();
+
+        #[cfg(not(target_arch = "wasm32"))]
         let df = if ThreadCom::try_from_global(&CONFIG).is_ok() {
             ldf.collect().map_err(RPolarsErr::from)?
         } else {
@@ -131,6 +133,9 @@ impl PlRLazyFrame {
             .map_err(RPolarsErr::from)?
         };
 
+        #[cfg(target_arch = "wasm32")]
+        let df = ldf.collect().map_err(RPolarsErr::from)?;
+
         Ok(df.into())
     }
 
@@ -253,6 +258,8 @@ impl PlRLazyFrame {
             try_parse_dates: try_parse_hive_dates,
         };
         // TODO: better error message
+        // TODO: Refactor with adding `cloud` feature as like Python Polars
+        #[cfg(not(target_arch = "wasm32"))]
         let cloud_options = match storage_options {
             Some(x) => {
                 let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
@@ -264,6 +271,10 @@ impl PlRLazyFrame {
             }
             None => None,
         };
+
+        #[cfg(target_arch = "wasm32")]
+        let cloud_options: Option<Vec<(String, String)>> = None;
+
         let mut args = ScanArgsIpc {
             n_rows,
             cache,
@@ -275,6 +286,9 @@ impl PlRLazyFrame {
         };
 
         let first_path: Option<PathBuf> = source.first().unwrap().clone().into();
+
+        // TODO: Refactor with adding `cloud` feature as like Python Polars
+        #[cfg(not(target_arch = "wasm32"))]
         if let Some(first_path) = first_path {
             let first_path_url = first_path.to_string_lossy();
             let mut cloud_options =
@@ -387,6 +401,8 @@ impl PlRLazyFrame {
             None => None,
         };
 
+        // TODO: Refactor with adding `cloud` feature as like Python Polars
+        #[cfg(not(target_arch = "wasm32"))]
         let cloud_options = match storage_options {
             Some(x) => {
                 let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
@@ -399,8 +415,14 @@ impl PlRLazyFrame {
             None => None,
         };
 
+        #[cfg(target_arch = "wasm32")]
+        let cloud_options: Option<Vec<(String, String)>> = None;
+
         let mut r = LazyCsvReader::new_paths(source.clone().into());
         let first_path: Option<PathBuf> = source.first().unwrap().clone().into();
+
+        // TODO: Refactor with adding `cloud` feature as like Python Polars
+        #[cfg(not(target_arch = "wasm32"))]
         if let Some(first_path) = first_path {
             let first_path_url = first_path.to_string_lossy();
 
@@ -443,6 +465,7 @@ impl PlRLazyFrame {
         Ok(r.finish().map_err(RPolarsErr::from)?.into())
     }
 
+    #[allow(unused_variables)]
     fn new_from_parquet(
         source: StringSexp,
         cache: bool,
@@ -463,84 +486,100 @@ impl PlRLazyFrame {
         hive_schema: Option<ListSexp>,
         include_file_paths: Option<&str>,
     ) -> Result<Self> {
-        let source = source
-            .to_vec()
-            .iter()
-            .map(PathBuf::from)
-            .collect::<Vec<PathBuf>>();
-        let row_index_offset = <Wrap<u32>>::try_from(row_index_offset)?.0;
-        let n_rows = match n_rows {
-            Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
-            None => None,
-        };
-        let parallel = <Wrap<ParallelStrategy>>::try_from(parallel)?.0;
-        let retries = <Wrap<usize>>::try_from(retries)?.0;
-        let hive_schema = match hive_schema {
-            Some(x) => Some(Arc::new(<Wrap<Schema>>::try_from(x)?.0)),
-            None => None,
-        };
-        let schema = match schema {
-            Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
-            None => None,
-        };
-
-        let row_index = match row_index_name {
-            Some(x) => Some(RowIndex {
-                name: x.into(),
-                offset: row_index_offset,
-            }),
-            None => None,
-        };
-
-        let hive_options = HiveOptions {
-            enabled: hive_partitioning,
-            hive_start_idx: 0,
-            schema: hive_schema,
-            try_parse_dates: try_parse_hive_dates,
-        };
-
-        let mut args = ScanArgsParquet {
-            n_rows,
-            cache,
-            parallel,
-            rechunk,
-            row_index,
-            low_memory,
-            cloud_options: None,
-            use_statistics,
-            schema: schema.map(|x| Arc::new(x)),
-            hive_options,
-            glob,
-            include_file_paths: include_file_paths.map(|x| x.into()),
-            allow_missing_columns,
-        };
-
-        let first_path = source.first().unwrap().clone().into();
-
-        let cloud_options = match storage_options {
-            Some(x) => {
-                let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
-                    RPolarsErr::Other(format!(
-                        "`storage_options` must be a named character vector"
-                    ))
-                })?;
-                Some(out.0)
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            let source = source
+                .to_vec()
+                .iter()
+                .map(PathBuf::from)
+                .collect::<Vec<PathBuf>>();
+            let row_index_offset = <Wrap<u32>>::try_from(row_index_offset)?.0;
+            let n_rows = match n_rows {
+                Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
+                None => None,
+            };
+            let parallel = <Wrap<ParallelStrategy>>::try_from(parallel)?.0;
+            let retries = <Wrap<usize>>::try_from(retries)?.0;
+            let hive_schema = match hive_schema {
+                Some(x) => Some(Arc::new(<Wrap<Schema>>::try_from(x)?.0)),
+                None => None,
+            };
+            let schema = match schema {
+                Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
+                None => None,
+            };
+
+            let row_index = match row_index_name {
+                Some(x) => Some(RowIndex {
+                    name: x.into(),
+                    offset: row_index_offset,
+                }),
+                None => None,
+            };
+
+            let hive_options = HiveOptions {
+                enabled: hive_partitioning,
+                hive_start_idx: 0,
+                schema: hive_schema,
+                try_parse_dates: try_parse_hive_dates,
+            };
+
+            let mut args = ScanArgsParquet {
+                n_rows,
+                cache,
+                parallel,
+                rechunk,
+                row_index,
+                low_memory,
+                cloud_options: None,
+                use_statistics,
+                schema: schema.map(|x| Arc::new(x)),
+                hive_options,
+                glob,
+                include_file_paths: include_file_paths.map(|x| x.into()),
+                allow_missing_columns,
+            };
+
+            let first_path = source.first().unwrap().clone().into();
+
+            // TODO: Refactor with adding `cloud` feature as like Python Polars
+            #[cfg(not(target_arch = "wasm32"))]
+            let cloud_options = match storage_options {
+                Some(x) => {
+                    let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
+                        RPolarsErr::Other(format!(
+                            "`storage_options` must be a named character vector"
+                        ))
+                    })?;
+                    Some(out.0)
+                }
+                None => None,
+            };
+
+            #[cfg(target_arch = "wasm32")]
+            let cloud_options: Option<Vec<(String, String)>> = None;
+
+            // TODO: Refactor with adding `cloud` feature as like Python Polars
+            #[cfg(not(target_arch = "wasm32"))]
+            if let Some(first_path) = first_path {
+                let first_path_url = first_path.to_string_lossy();
+                let cloud_options =
+                    parse_cloud_options(&first_path_url, cloud_options.unwrap_or_default())?;
+                args.cloud_options = Some(cloud_options.with_max_retries(retries));
             }
-            None => None,
-        };
-
-        if let Some(first_path) = first_path {
-            let first_path_url = first_path.to_string_lossy();
-            let cloud_options =
-                parse_cloud_options(&first_path_url, cloud_options.unwrap_or_default())?;
-            args.cloud_options = Some(cloud_options.with_max_retries(retries));
-        }
 
-        let lf = LazyFrame::scan_parquet_files(source.into(), args).map_err(RPolarsErr::from)?;
+            let lf =
+                LazyFrame::scan_parquet_files(source.into(), args).map_err(RPolarsErr::from)?;
 
-        Ok(lf.into())
+            Ok(lf.into())
+        }
+        #[cfg(target_arch = "wasm32")]
+        {
+            Err(RPolarsErr::Other(format!("Not supported in WASM")).into())
+        }
     }
 
+    #[allow(unused_variables)]
     fn new_from_ndjson(
         source: StringSexp,
         low_memory: bool,
@@ -558,90 +597,104 @@ impl PlRLazyFrame {
         storage_options: Option<StringSexp>,
         file_cache_ttl: Option<NumericScalar>,
     ) -> Result<Self> {
-        let source = source
-            .to_vec()
-            .iter()
-            .map(PathBuf::from)
-            .collect::<Vec<PathBuf>>();
-        let row_index_offset = <Wrap<u32>>::try_from(row_index_offset)?.0;
-        let infer_schema_length = match infer_schema_length {
-            Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
-            None => None,
-        };
-        let batch_size = match batch_size {
-            Some(x) => Some(<Wrap<NonZeroUsize>>::try_from(x)?.0),
-            None => None,
-        };
-        let n_rows = match n_rows {
-            Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
-            None => None,
-        };
-        let file_cache_ttl = match file_cache_ttl {
-            Some(x) => Some(<Wrap<u64>>::try_from(x)?.0),
-            None => None,
-        };
-        let retries = <Wrap<usize>>::try_from(retries)?.0;
-        let schema = match schema {
-            Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
-            None => None,
-        };
-        let schema_overrides = match schema_overrides {
-            Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
-            None => None,
-        };
-
-        let row_index = match row_index_name {
-            Some(x) => Some(RowIndex {
-                name: x.into(),
-                offset: row_index_offset,
-            }),
-            None => None,
-        };
-
-        let first_path = source.first().unwrap().clone().into();
-
-        let mut r = LazyJsonLineReader::new_paths(source.into());
-
-        let cloud_options = match storage_options {
-            Some(x) => {
-                let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
-                    RPolarsErr::Other(format!(
-                        "`storage_options` must be a named character vector"
-                    ))
-                })?;
-                Some(out.0)
-            }
-            None => None,
-        };
-
-        if let Some(first_path) = first_path {
-            let first_path_url = first_path.to_string_lossy();
-
-            let mut cloud_options =
-                parse_cloud_options(&first_path_url, cloud_options.unwrap_or_default())?;
-            cloud_options = cloud_options.with_max_retries(retries);
-
-            if let Some(file_cache_ttl) = file_cache_ttl {
-                cloud_options.file_cache_ttl = file_cache_ttl;
-            }
-
-            r = r.with_cloud_options(Some(cloud_options));
-        };
-
-        let lf = r
-            .with_infer_schema_length(infer_schema_length.and_then(NonZeroUsize::new))
-            .with_batch_size(batch_size)
-            .with_n_rows(n_rows)
-            .low_memory(low_memory)
-            .with_rechunk(rechunk)
-            .with_schema(schema.map(|schema| Arc::new(schema)))
-            .with_schema_overwrite(schema_overrides.map(|x| Arc::new(x)))
-            .with_row_index(row_index)
-            .with_ignore_errors(ignore_errors)
-            .with_include_file_paths(include_file_paths.map(|x| x.into()))
-            .finish()
-            .map_err(RPolarsErr::from)?;
-
-        Ok(lf.into())
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            let source = source
+                .to_vec()
+                .iter()
+                .map(PathBuf::from)
+                .collect::<Vec<PathBuf>>();
+            let row_index_offset = <Wrap<u32>>::try_from(row_index_offset)?.0;
+            let infer_schema_length = match infer_schema_length {
+                Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
+                None => None,
+            };
+            let batch_size = match batch_size {
+                Some(x) => Some(<Wrap<NonZeroUsize>>::try_from(x)?.0),
+                None => None,
+            };
+            let n_rows = match n_rows {
+                Some(x) => Some(<Wrap<usize>>::try_from(x)?.0),
+                None => None,
+            };
+            let file_cache_ttl = match file_cache_ttl {
+                Some(x) => Some(<Wrap<u64>>::try_from(x)?.0),
+                None => None,
+            };
+            let retries = <Wrap<usize>>::try_from(retries)?.0;
+            let schema = match schema {
+                Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
+                None => None,
+            };
+            let schema_overrides = match schema_overrides {
+                Some(x) => Some(<Wrap<Schema>>::try_from(x)?.0),
+                None => None,
+            };
+
+            let row_index = match row_index_name {
+                Some(x) => Some(RowIndex {
+                    name: x.into(),
+                    offset: row_index_offset,
+                }),
+                None => None,
+            };
+
+            let first_path = source.first().unwrap().clone().into();
+
+            let mut r = LazyJsonLineReader::new_paths(source.into());
+
+            // TODO: Refactor with adding `cloud` feature as like Python Polars
+            #[cfg(not(target_arch = "wasm32"))]
+            let cloud_options = match storage_options {
+                Some(x) => {
+                    let out = <Wrap<Vec<(String, String)>>>::try_from(x).map_err(|_| {
+                        RPolarsErr::Other(format!(
+                            "`storage_options` must be a named character vector"
+                        ))
+                    })?;
+                    Some(out.0)
+                }
+                None => None,
+            };
+
+            #[cfg(target_arch = "wasm32")]
+            let cloud_options: Option<Vec<(String, String)>> = None;
+
+            // TODO: Refactor with adding `cloud` feature as like Python Polars
+            #[cfg(not(target_arch = "wasm32"))]
+            if let Some(first_path) = first_path {
+                let first_path_url = first_path.to_string_lossy();
+
+                let mut cloud_options =
+                    parse_cloud_options(&first_path_url, cloud_options.unwrap_or_default())?;
+                cloud_options = cloud_options.with_max_retries(retries);
+
+                if let Some(file_cache_ttl) = file_cache_ttl {
+                    cloud_options.file_cache_ttl = file_cache_ttl;
+                }
+
+                r = r.with_cloud_options(Some(cloud_options));
+            };
+
+            let lf = r
+                .with_infer_schema_length(infer_schema_length.and_then(NonZeroUsize::new))
+                .with_batch_size(batch_size)
+                .with_n_rows(n_rows)
+                .low_memory(low_memory)
+                .with_rechunk(rechunk)
+                .with_schema(schema.map(|schema| Arc::new(schema)))
+                .with_schema_overwrite(schema_overrides.map(|x| Arc::new(x)))
+                .with_row_index(row_index)
+                .with_ignore_errors(ignore_errors)
+                .with_include_file_paths(include_file_paths.map(|x| x.into()))
+                .finish()
+                .map_err(RPolarsErr::from)?;
+
+            Ok(lf.into())
+        }
+        #[cfg(target_arch = "wasm32")]
+        {
+            Err(RPolarsErr::Other(format!("Not supported in WASM")).into())
+        }
     }
 }