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x/deno/snapshots/lib.rs

A modern runtime for JavaScript and TypeScript.
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use deno_core::Snapshot;use once_cell::sync::Lazy;use std::convert::TryInto;
pub fn tsc_snapshot() -> Snapshot { Snapshot::Static(&*COMPILER_SNAPSHOT)}
static COMPILER_SNAPSHOT: Lazy<Box<[u8]>> = Lazy::new( #[cold] #[inline(never)] || { static COMPRESSED_COMPILER_SNAPSHOT: &[u8] = include_bytes!(concat!(env!("OUT_DIR"), "/COMPILER_SNAPSHOT.bin"));
zstd::bulk::decompress( &COMPRESSED_COMPILER_SNAPSHOT[4..], u32::from_le_bytes(COMPRESSED_COMPILER_SNAPSHOT[0..4].try_into().unwrap()) as usize, ) .unwrap() .into_boxed_slice() },);
pub fn cli_snapshot() -> Snapshot { Snapshot::Static(&*CLI_SNAPSHOT)}
static CLI_SNAPSHOT: Lazy<Box<[u8]>> = Lazy::new( #[allow(clippy::uninit_vec)] #[cold] #[inline(never)] || { static COMPRESSED_CLI_SNAPSHOT: &[u8] = include_bytes!(concat!(env!("OUT_DIR"), "/CLI_SNAPSHOT.bin"));
let size = u32::from_le_bytes(COMPRESSED_CLI_SNAPSHOT[0..4].try_into().unwrap()) as usize; let mut vec = Vec::with_capacity(size);
// SAFETY: vec is allocated with exact snapshot size (+ alignment) // SAFETY: non zeroed bytes are overwritten with decompressed snapshot unsafe { vec.set_len(size); }
lzzzz::lz4::decompress(&COMPRESSED_CLI_SNAPSHOT[4..], &mut vec).unwrap();
vec.into_boxed_slice() },);
#[cfg(test)]mod tests { use deno_runtime::deno_core;
#[test] fn cli_snapshot() { let mut js_runtime = deno_core::JsRuntime::new(deno_core::RuntimeOptions { startup_snapshot: Some(crate::cli_snapshot()), ..Default::default() }); js_runtime .execute_script( "<anon>", r#" if (!(bootstrap.mainRuntime && bootstrap.workerRuntime)) { throw Error("bad"); } console.log("we have console.log!!!"); "#, ) .unwrap(); }}