mirror of
https://github.com/denoland/deno
synced 2024-08-25 02:57:22 +00:00
c1c8eb3d55
Closes #19399 (running without snapshots at all was suggested as an alternative solution). Adds a `__runtime_js_sources` pseudo-private feature to load extension JS sources at runtime for faster development, instead of building and loading snapshots or embedding sources in the binary. Will only work in a development environment obviously. Try running `cargo test --features __runtime_js_sources integration::node_unit_tests::os_test`. Then break some behaviour in `ext/node/polyfills/os.ts` e.g. make `function cpus() {}` return an empty array, and run it again. Fix and then run again. No more build time in between.
44 lines
967 B
Rust
44 lines
967 B
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use deno_core::Snapshot;
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use log::debug;
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#[cfg(not(feature = "__runtime_js_sources"))]
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static CLI_SNAPSHOT: &[u8] =
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include_bytes!(concat!(env!("OUT_DIR"), "/CLI_SNAPSHOT.bin"));
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pub fn deno_isolate_init() -> Option<Snapshot> {
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debug!("Deno isolate init with snapshots.");
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#[cfg(not(feature = "__runtime_js_sources"))]
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{
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Some(Snapshot::Static(CLI_SNAPSHOT))
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}
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#[cfg(feature = "__runtime_js_sources")]
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{
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None
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn runtime_snapshot() {
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let mut js_runtime = deno_core::JsRuntime::new(deno_core::RuntimeOptions {
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startup_snapshot: deno_isolate_init(),
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..Default::default()
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});
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js_runtime
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.execute_script_static(
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"<anon>",
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r#"
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if (!(bootstrap.mainRuntime && bootstrap.workerRuntime)) {
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throw Error("bad");
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}
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"#,
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)
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.unwrap();
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}
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}
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