Fix error when importing very large JS files (#4146) #2530

Job	Run time
build_examples	3m 42s
build_nightly	1m 36s
build_benchmarks	55s
Verify that web-sys is compiled correctly	48s
Check	1m 14s
Clippy	2m 47s
Clippy (project)	2m 36s
Clippy (web-sys)	2m 25s
dist_linux_aarch64_gnu	2m 51s
dist_linux_x86_64_musl	2m 29s
dist_macos_aarch64	1m 32s
dist_macos_x86_64	1m 55s
dist_windows	3m 25s
doc_api	1m 19s
doc_book	4s
Check MSRV for CLI tools	32s
Check MSRV for libraries	1m 14s
Rustfmt	6s
Taplo	6s
Build and test the deno example	1m 1s
Run native tests	1m 59s
Run wasm-bindgen crate tests with multithreading	3m 19s
Run UI compile-fail tests	45s
Run wasm-bindgen crate tests (wasm-bindgen)	3m 51s
Run wasm-bindgen crate tests with externref feature	1m 37s
Run wasm-bindgen crate tests (wasm-bindgen (serde-serialize))	1m 35s
Run wasm-bindgen crate tests with multi-value feature	1m 40s
Run wasm-bindgen wasm test	1m 20s
Run wasm-bindgen crate tests (wasm-bindgen (enable-interning))	1m 25s
Run web-sys tests (with geckodriver)	38s
Run web-sys (all features) tests (with geckodriver)	2m 47s
Run web-sys (unstable, all features) tests (with geckodriver)	3m 3s
Run js-sys tests (with geckodriver)	1m 34s
Run js-sys (unstable) tests (with geckodriver)	1m 15s
Run wasm-bindgen-webidl tests (with geckodriver)	22s
Run webidl-tests tests (with geckodriver)	1m 11s
Run webidl-tests (unstable) tests (with geckodriver)	1m 7s
Run typescript-tests tests (with geckodriver)	1m 22s
test_nightly	41s
test_examples	1m 42s
deploy	44s
	1h 6m 34s

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