mirror of
https://github.com/denoland/deno.git
synced 2024-10-29 08:58:01 -04:00
110 lines
3.7 KiB
Markdown
110 lines
3.7 KiB
Markdown
# deno
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| **Linux** | **Windows** |
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| [](https://travis-ci.com/denoland/deno) | [](https://ci.appveyor.com/project/deno/deno) |
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## A secure TypeScript runtime built on V8
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* Supports TypeScript 3.0.1 out of the box. Uses V8 6.9.297. That is, it's
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very modern JavaScript.
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* No `package.json`. No npm. Not explicitly compatible with Node.
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* Imports reference source code URLs only.
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```
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import { test } from "https://unpkg.com/deno_testing@0.0.5/testing.ts"
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import { log } from "./util.ts"
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```
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Remote code is fetched and cached on first execution, and never updated until
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the code is run with the `--reload` flag. (So, this will still work on an
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airplane. See `~/.deno/src` for details on the cache.)
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* File system and network access can be controlled in order to run sandboxed
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code. Defaults to read-only file system access and no network access.
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Access between V8 (unprivileged) and Rust (privileged) is only done via
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serialized messages defined in this
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[flatbuffer](https://github.com/denoland/deno/blob/master/src/msg.fbs). This makes it
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easy to audit.
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To enable write access explicitly use `--allow-write` and `--allow-net` for
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network access.
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* Single executable:
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```
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> ls -lh out/release/deno
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-rwxr-xr-x 1 rld staff 48M Aug 2 13:24 out/release/deno
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> otool -L out/release/deno
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out/release/deno:
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/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.50.4)
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/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 1.0.0)
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/System/Library/Frameworks/Security.framework/Versions/A/Security (compatibility version 1.0.0, current version 58286.51.6)
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/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 400.9.0)
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>
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```
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* Always dies on uncaught errors.
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* Supports top-level `await`.
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* Aims to be browser compatible.
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## Status
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Under development.
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The prototype golang implementation is
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[here](https://github.com/denoland/deno/tree/golang). We are in the process of
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rewriting in C++/Rust to avoid future GC contention between Go and V8.
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Progress towards first release is tracked
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[here](https://github.com/denoland/deno/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22v0.1+%28first+binary+release%29%22+).
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Roadmap is [here](https://github.com/denoland/deno/blob/master/Roadmap.md).
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Also see [this presentation](http://tinyclouds.org/jsconf2018.pdf).
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[Chat room](https://gitter.im/denolife/Lobby).
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## Build instructions
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To ensure reproducable builds, Deno has most of its dependencies in a git
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submodule. However, you need
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[rustc](https://www.rust-lang.org/en-US/install.html) installed separately.
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You probably want
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[ccache](https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/ccache)
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installed too.
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To build:
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# Fetch deps.
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git clone --recurse-submodules https://github.com/denoland/deno.git
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cd deno
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./tools/setup.py
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# Build.
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./tools/build.py
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# Run
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./out/debug/deno tests/002_hello.ts
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Other useful commands:
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# Call ninja manually.
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./third_party/depot_tools/ninja -C out/debug :all
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# Build a release binary.
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DENO_BUILD_MODE=release ./tools/build.py :deno
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# List executable targets.
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./third_party/depot_tools/gn ls out/debug //:* --as=output --type=executable
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# List build configuation.
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./third_party/depot_tools/gn args out/debug/ --list
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# Edit build configuration.
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./third_party/depot_tools/gn args out/debug/
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# Describe a target.
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./third_party/depot_tools/gn desc out/debug/ :deno
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./third_party/depot_tools/gn help
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Env vars: `DENO_BUILD_MODE`, `DENO_BUILD_PATH`, `DENO_BUILD_ARGS`.
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