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denoland-deno/core
Bartek Iwańczuk 1a7259b04b
feat: add "unhandledrejection" event support (#12994) (#15080)
Relanding #12994 

This commit adds support for "unhandledrejection" event.

This event will trigger event listeners registered using:

"globalThis.addEventListener("unhandledrejection")
"globalThis.onunhandledrejection"
This is done by registering a default handler using
"Deno.core.setPromiseRejectCallback" that allows to
handle rejected promises in JavaScript instead of Rust.

This commit will make it possible to polyfill
"process.on("unhandledRejection")" in the Node compat
layer.

Co-authored-by: Colin Ihrig <cjihrig@gmail.com>
2022-07-14 22:39:20 +02:00
..
examples feat(ext/ffi): Thread safe callbacks (#14942) 2022-06-28 14:53:36 +05:30
00_primordials.js refactor(core): Move Deno.core bindings to ops (#14793) 2022-06-07 11:25:10 +02:00
01_core.js feat: add "unhandledrejection" event support (#12994) (#15080) 2022-07-14 22:39:20 +02:00
02_error.js refactor(core): Move Deno.core bindings to ops (#14793) 2022-06-07 11:25:10 +02:00
async_cancel.rs build: require safety comments on unsafe code (#13870) 2022-06-26 00:13:24 +02:00
async_cell.rs build: require safety comments on unsafe code (#13870) 2022-06-26 00:13:24 +02:00
bindings.rs feat: add "unhandledrejection" event support (#12994) (#15080) 2022-07-14 22:39:20 +02:00
Cargo.toml chore: upgrade rusty_v8 to v0.46.0 (#15200) 2022-07-14 12:03:31 +02:00
encode_decode_test.js refactor(core): Move Deno.core bindings to ops (#14793) 2022-06-07 11:25:10 +02:00
error.rs perf(core): Cache source lookups (#14816) 2022-06-20 14:42:20 +02:00
error_builder_test.js chore: update copyright to 2022 (#13306) 2022-01-07 22:09:52 -05:00
error_codes.rs fix(core): support classifying ENOTDIR (#14646) 2022-05-17 19:20:57 +02:00
extensions.rs feat(ext/ffi): Thread safe callbacks (#14942) 2022-06-28 14:53:36 +05:30
flags.rs chore: update copyright to 2022 (#13306) 2022-01-07 22:09:52 -05:00
gotham_state.rs chore: update copyright to 2022 (#13306) 2022-01-07 22:09:52 -05:00
icudtl.dat chore: upgrade rusty_v8 to 0.43.1 (#14713) 2022-05-26 13:13:01 +02:00
inspector.rs build: require safety comments on unsafe code (#13870) 2022-06-26 00:13:24 +02:00
internal.d.ts chore: update copyright year (#13434) 2022-01-20 16:10:16 +09:00
lib.deno_core.d.ts feat(test): improved op sanitizer errors + traces (#13676) 2022-02-16 19:53:17 +01:00
lib.rs chore(web, worker): Use DetachedBuffer for postMessage ops (#15133) 2022-07-11 17:27:33 +02:00
module_specifier.rs fix(core): don't panic on non-existent cwd (#14957) 2022-06-25 09:21:58 +05:30
modules.rs build: require safety comments on unsafe code (#13870) 2022-06-26 00:13:24 +02:00
normalize_path.rs chore: update copyright to 2022 (#13306) 2022-01-07 22:09:52 -05:00
ops.rs fix(core): remove unsafe in OpsTracker (#15025) 2022-07-01 00:43:25 +02:00
ops_builtin.rs Revert "feat: add "unhandledrejection" event support (#12994)" (#15075) 2022-07-04 23:34:39 +02:00
ops_builtin_v8.rs feat: add "unhandledrejection" event support (#12994) (#15080) 2022-07-14 22:39:20 +02:00
ops_metrics.rs fix(core): remove unsafe in OpsTracker (#15025) 2022-07-01 00:43:25 +02:00
README.md chore(core): update deno_core README (#14042) 2022-03-20 16:08:35 +05:30
resources.rs build: require safety comments on unsafe code (#13870) 2022-06-26 00:13:24 +02:00
runtime.rs fix(core): unhandled rejection in top-level scope (#15204) 2022-07-14 21:01:08 +02:00
serialize_deserialize_test.js refactor(core): Move Deno.core bindings to ops (#14793) 2022-06-07 11:25:10 +02:00
source_map.rs perf(core): Cache source lookups (#14816) 2022-06-20 14:42:20 +02:00

Deno Core Crate

crates docs

The main dependency of this crate is rusty_v8, which provides the V8-Rust bindings.

This Rust crate contains the essential V8 bindings for Deno's command-line interface (Deno CLI). The main abstraction here is the JsRuntime which provides a way to execute JavaScript.

The JsRuntime implements an event loop abstraction for the executed code that keeps track of all pending tasks (async ops, dynamic module loads). It is user's responsibility to drive that loop by using JsRuntime::run_event_loop method - it must be executed in the context of Rust's future executor (eg. tokio, smol).

Rust functions can be registered in JavaScript using deno_core::Extension. Use the Deno.core.opSync() and Deno.core.opAsync() functions to trigger the op function callback. A conventional way to write ops is using the deno_ops crate.

Documentation for this crate is thin at the moment. Please see hello_world.rs and http_bench_json_ops.rs as examples of usage.

TypeScript support and lots of other functionality are not available at this layer. See the CLI for that.