mirror of
https://github.com/denoland/deno.git
synced 2024-12-27 01:29:14 -05:00
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.
43 lines
967 B
Rust
43 lines
967 B
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_core::Snapshot;
|
|
use log::debug;
|
|
|
|
#[cfg(not(feature = "__runtime_js_sources"))]
|
|
static CLI_SNAPSHOT: &[u8] =
|
|
include_bytes!(concat!(env!("OUT_DIR"), "/CLI_SNAPSHOT.bin"));
|
|
|
|
pub fn deno_isolate_init() -> Option<Snapshot> {
|
|
debug!("Deno isolate init with snapshots.");
|
|
#[cfg(not(feature = "__runtime_js_sources"))]
|
|
{
|
|
Some(Snapshot::Static(CLI_SNAPSHOT))
|
|
}
|
|
#[cfg(feature = "__runtime_js_sources")]
|
|
{
|
|
None
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn runtime_snapshot() {
|
|
let mut js_runtime = deno_core::JsRuntime::new(deno_core::RuntimeOptions {
|
|
startup_snapshot: deno_isolate_init(),
|
|
..Default::default()
|
|
});
|
|
js_runtime
|
|
.execute_script_static(
|
|
"<anon>",
|
|
r#"
|
|
if (!(bootstrap.mainRuntime && bootstrap.workerRuntime)) {
|
|
throw Error("bad");
|
|
}
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
}
|
|
}
|