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denoland-deno/core
Andreu Botella fcca54d3ba
fix(core): Have custom errors be created in the right realm (#17050)
Although PR #16366 did not fully revert `deno_core`'s support for
realms, since `JsRealm` still existed after that, it did remove the
`ContextState` struct, originally introduced in #14734. This change made
`js_build_custom_error_cb`, among other properties, a per-runtime
callback, rather than per-realm, which cause a bug where errors thrown
from an op would always be constructed in the main realm, rather than in
the current one.

This change adds back `ContextState` to fix this bug, adds back the
`known_realms` field of `JsRuntimeState` (needed to be able to drop the
callback when snapshotting), and also relands #14750, which adds the
`js_realm_sync_ops` test for this bug that was removed in #16366.
2022-12-20 20:09:16 +01:00
..
examples feat(ops): fast calls for Wasm (#16776) 2022-11-27 19:24:28 +05:30
00_primordials.js chore: Update dlint (#17031) 2022-12-20 03:37:50 +01:00
01_core.js refactor(core): add more information when unable to build error (#17027) 2022-12-13 22:59:21 +01:00
02_error.js fix(core): make errors more resistant to tampering (#15789) 2022-09-07 09:11:16 -04:00
async_cancel.rs chore: use Rust 1.63.0 (#15464) 2022-08-21 19:31:14 +02:00
async_cell.rs chore: use Rust 1.65.0 (#16688) 2022-11-18 02:59:10 +01:00
bindings.rs fix(npm): disable npm specifiers in import.meta.resolve() (#16599) 2022-11-11 18:20:13 +01:00
Cargo.toml chore: forward v1.29.1 release commit to main (#17067) 2022-12-15 13:30:55 -05:00
encode_decode_test.js perf(ops): Monomorphic sync op calls (#15337) 2022-08-11 15:56:56 +02:00
error.rs fix(core): Have custom errors be created in the right realm (#17050) 2022-12-20 20:09:16 +01:00
error_builder_test.js perf(ops): Monomorphic sync op calls (#15337) 2022-08-11 15:56:56 +02:00
error_codes.rs fix(core): support classifying ENOTDIR (#14646) 2022-05-17 19:20:57 +02:00
extensions.rs Reland "perf(core): generate inlined wrappers for async ops" (#16455) 2022-10-28 16:50:17 +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 refactor(core): allow to listen for notifications in LocalInspectorSession (#17040) 2022-12-16 20:12:06 +01:00
internal.d.ts chore: update copyright year (#13434) 2022-01-20 16:10:16 +09:00
io.rs feat(core): improve resource read & write traits (#16115) 2022-10-09 14:49:25 +00:00
lib.deno_core.d.ts chore(core): remove core.opSync (#16379) 2022-10-21 19:35:23 +05:30
lib.rs feat(core): Ability to create snapshots from existing snapshots (#16597) 2022-11-21 14:36:26 +01:00
module_specifier.rs chore: update to Rust 1.66.0 (#17078) 2022-12-17 23:20:15 +01:00
modules.rs feat(core): show unresolved promise origin (#16650) 2022-11-28 23:07:23 +01:00
normalize_path.rs perf(runtime): optimize allocations in read/write checks (#15631) 2022-08-27 20:50:05 +05:30
ops.rs fix(core) Include causes when converting anyhow errors to JS exceptions (#16397) 2022-10-26 17:30:44 +02:00
ops_builtin.rs Revert "feat(ops): Fast zero copy string arguments (#16777)" (#17063) 2022-12-15 15:26:10 +00:00
ops_builtin_v8.rs fix(runtime): Deno.memoryUsage().rss should return correct value (#17088) 2022-12-17 23:25:51 +01:00
ops_metrics.rs fix(core): remove unsafe in OpsTracker (#15025) 2022-07-01 00:43:25 +02:00
README.md chore(core): remove core.opSync (#16379) 2022-10-21 19:35:23 +05:30
resources.rs fix(ext/net): return an error from startTls and serveHttp if the original connection is captured elsewhere (#16242) 2022-10-18 11:28:27 +09:00
runtime.rs fix(core): Have custom errors be created in the right realm (#17050) 2022-12-20 20:09:16 +01:00
serialize_deserialize_test.js perf(ops): Monomorphic sync op calls (#15337) 2022-08-11 15:56:56 +02:00
snapshot_util.rs feat(core): support initializing extensions with and without JS (#16789) 2022-11-27 00:58:23 +01:00
source_map.rs feat: emit files on demand and fix racy emit (#15220) 2022-07-19 11:58:18 -04:00

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.ops.op_name() and Deno.core.opAsync("op_name", ...) 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.