By default, `deno serve` will assign port 8000 (like `Deno.serve`).
Users may choose a different port using `--port`.
`deno serve /tmp/file.ts`
`server.ts`:
```ts
export default {
fetch(req) {
return new Response("hello world!\n");
},
};
```
Embedders may have special requirements around file opening, so we add a
new `check_open` permission check that is called as part of the file
open process.
This PR enables V8 code cache for ES modules and for `require` scripts
through `op_eval_context`. Code cache artifacts are transparently stored
and fetched using sqlite db and are passed to V8. `--no-code-cache` can
be used to disable.
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
When `DENO_FUTURE=1` env var is present, then BYONM
("bring your own node_modules") is enabled by default.
That means that is there's a `package.json` present, users
are expected to explicitly install dependencies from that file.
Towards https://github.com/denoland/deno/issues/23151
This was showing up on the flamegraph.
```
14:54 $ hyperfine -S none --warmup 25 '/tmp/deno run /tmp/empty.js' 'target/release/deno run /tmp/empty.js'
Benchmark 1: /tmp/deno run /tmp/empty.js
Time (mean ± σ): 17.2 ms ± 4.7 ms [User: 11.2 ms, System: 4.0 ms]
Range (min … max): 15.1 ms … 72.9 ms 172 runs
Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet system without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.
Benchmark 2: target/release/deno run /tmp/empty.js
Time (mean ± σ): 16.7 ms ± 1.1 ms [User: 11.1 ms, System: 4.0 ms]
Range (min … max): 15.0 ms … 20.1 ms 189 runs
Summary
'target/release/deno run /tmp/empty.js' ran
1.03 ± 0.29 times faster than '/tmp/deno run /tmp/empty.js'
✔ ~/Documents/github/deno/deno [faster_extract|…5⚑ 23]
```
This introduces the `denort` binary - a slim version of deno without
tooling. The binary is used as the default for `deno compile`.
Improves `deno compile` final size by ~2.5x (141 MB -> 61 MB) on Linux
x86_64.
This commit introduces deprecation warnings for "Deno.*" APIs.
This is gonna be quite noisy, but should tremendously help with user
code updates to ensure
smooth migration to Deno 2.0. The warning is printed at each unique call
site to help quickly
identify where code needs to be adjusted. There's some stack frame
filtering going on to
remove frames that are not useful to the user and would only cause
confusion.
The warning can be silenced using "--quiet" flag or
"DENO_NO_DEPRECATION_WARNINGS" env var.
"Deno.run()" API is now using this warning. Other deprecated APIs will
start warning
in follow up PRs.
Example:
```js
import { runEcho as runEcho2 } from "http://localhost:4545/run/warn_on_deprecated_api/mod.ts";
const p = Deno.run({
cmd: [
Deno.execPath(),
"eval",
"console.log('hello world')",
],
});
await p.status();
p.close();
async function runEcho() {
const p = Deno.run({
cmd: [
Deno.execPath(),
"eval",
"console.log('hello world')",
],
});
await p.status();
p.close();
}
await runEcho();
await runEcho();
for (let i = 0; i < 10; i++) {
await runEcho();
}
await runEcho2();
```
```
$ deno run --allow-read foo.js
Warning
├ Use of deprecated "Deno.run()" API.
│
├ This API will be removed in Deno 2.0. Make sure to upgrade to a stable API before then.
│
├ Suggestion: Use "Deno.Command()" API instead.
│
└ Stack trace:
└─ at file:///Users/ib/dev/deno/foo.js:3:16
hello world
Warning
├ Use of deprecated "Deno.run()" API.
│
├ This API will be removed in Deno 2.0. Make sure to upgrade to a stable API before then.
│
├ Suggestion: Use "Deno.Command()" API instead.
│
└ Stack trace:
├─ at runEcho (file:///Users/ib/dev/deno/foo.js:8:18)
└─ at file:///Users/ib/dev/deno/foo.js:13:7
hello world
Warning
├ Use of deprecated "Deno.run()" API.
│
├ This API will be removed in Deno 2.0. Make sure to upgrade to a stable API before then.
│
├ Suggestion: Use "Deno.Command()" API instead.
│
└ Stack trace:
├─ at runEcho (file:///Users/ib/dev/deno/foo.js:8:18)
└─ at file:///Users/ib/dev/deno/foo.js:14:7
hello world
Warning
├ Use of deprecated "Deno.run()" API.
│
├ This API will be removed in Deno 2.0. Make sure to upgrade to a stable API before then.
│
├ Suggestion: Use "Deno.Command()" API instead.
│
└ Stack trace:
├─ at runEcho (file:///Users/ib/dev/deno/foo.js:8:18)
└─ at file:///Users/ib/dev/deno/foo.js:17:9
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
Warning
├ Use of deprecated "Deno.run()" API.
│
├ This API will be removed in Deno 2.0. Make sure to upgrade to a stable API before then.
│
├ Suggestion: Use "Deno.Command()" API instead.
│
├ Suggestion: It appears this API is used by a remote dependency.
│ Try upgrading to the latest version of that dependency.
│
└ Stack trace:
├─ at runEcho (http://localhost:4545/run/warn_on_deprecated_api/mod.ts:2:18)
└─ at file:///Users/ib/dev/deno/foo.js:20:7
hello world
```
Closes #21839
This PR implements the Node child_process IPC functionality in Deno on
Unix systems.
For `fd > 2` a duplex unix pipe is set up between the parent and child
processes. Currently implements data passing via the channel in the JSON
serialization format.
This commit adds `--unstable-hmr` flag, that enabled Hot Module Replacement.
This flag works like `--watch` and accepts the same arguments. If
HMR is not possible the process will be restarted instead.
Currently HMR is only supported in `deno run` subcommand.
Upon HMR a `CustomEvent("hmr")` will be dispatched that contains
information which file was changed in its `details` property.
---------
Co-authored-by: Valentin Anger <syrupthinker@gryphno.de>
Co-authored-by: David Sherret <dsherret@gmail.com>
This makes `CliNpmResolver` a trait. The terminology used is:
- **managed** - Deno manages the node_modules folder and does an
auto-install (ex. `ManagedCliNpmResolver`)
- **byonm** - "Bring your own node_modules" (ex. `ByonmCliNpmResolver`,
which is in this PR, but unimplemented at the moment)
Part of #18967
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2. Ensure there is a related issue and it is referenced in the PR text.
3. Ensure there are tests that cover the changes.
4. Ensure `cargo test` passes.
5. Ensure `./tools/format.js` passes without changing files.
6. Ensure `./tools/lint.js` passes.
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As the title.
---------
Co-authored-by: Matt Mastracci <matthew@mastracci.com>
To fix bugs around detection of when node emulation is required, we will
just eagerly initialize it. The improvements we make to reduce the
impact of the startup time:
- [x] Process stdin/stdout/stderr are lazily created
- [x] node.js global proxy no longer allocates on each access check
- [x] Process checks for `beforeExit` listeners before doing expensive
shutdown work
- [x] Process should avoid adding global event handlers until listeners
are added
Benchmarking this PR (`89de7e1ff`) vs main (`41cad2179`)
```
12:36 $ third_party/prebuilt/mac/hyperfine --warmup 100 -S none './deno-41cad2179 run ./empty.js' './deno-89de7e1ff run ./empty.js'
Benchmark 1: ./deno-41cad2179 run ./empty.js
Time (mean ± σ): 24.3 ms ± 1.6 ms [User: 16.2 ms, System: 6.0 ms]
Range (min … max): 21.1 ms … 29.1 ms 115 runs
Benchmark 2: ./deno-89de7e1ff run ./empty.js
Time (mean ± σ): 24.0 ms ± 1.4 ms [User: 16.3 ms, System: 5.6 ms]
Range (min … max): 21.3 ms … 28.6 ms 126 runs
```
Fixes https://github.com/denoland/deno/issues/20142
Fixes https://github.com/denoland/deno/issues/15826
Fixes https://github.com/denoland/deno/issues/20028
Source code is now not cloned anymore between eszip and deno_core, as
eszip now
returns `Arc<[u8]>`, that can be trivially casted into `Arc<str>`, which
`deno_core` can consume without copying.
