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# deno
[](https://travis-ci.com/ry/deno)
A JavaScript runtime using V8 6.8 and Go.
* Supports TypeScript 2.8 out of the box.
* No package.json, no npm. Not backwards compatible with Node.
* Imports reference source code URLs only.
```
import { test } from "https://unpkg.com/deno_testing@0.0.5/testing.ts"
import { log } from "./util.ts"
```
* File system and network access can be controlled in order to run sandboxed
code. Defaults to read-only file system access. Access between V8
(unprivileged) and Golang (privileged) is only done via serialized messages
defined in this protobuf: https://github.com/ry/deno/blob/master/msg.proto
This makes it easy to audit.
* Single executable:
```
> ls -lh deno
-rwxrwxr-x 1 ryan ryan 55M May 28 23:46 deno
> ldd deno
linux-vdso.so.1 => (0x00007ffc6797a000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f104fa47000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f104f6c5000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f104f3bc000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f104f1a6000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f104eddc000)
/lib64/ld-linux-x86-64.so.2 (0x00007f104fc64000)
```
* Always dies on uncaught errors.
* Supports top-level await.
* Aims to be browser compatible.
* Can be used as a library to easily build your own JavaScript runtime.
https://github.com/ry/deno/blob/master/cmd/main.go
## Status
Segfaulty.
No docs yet. For some of the public API see
https://github.com/ry/deno/blob/master/deno.d.ts
And examples are around here:
https://github.com/ry/deno/blob/master/testdata/004_set_timeout.ts
Roadmap is here: https://github.com/ry/deno/blob/master/TODO.txt
## Compile instructions
I will release binaries at some point but for now you have to build it
yourself.
You need Protobuf 3. On Linux this might work:
```
cd ~
wget https://github.com/google/protobuf/releases/download/v3.1.0/protoc-3.1.0-linux-x86_64.zip
unzip protoc-3.1.0-linux-x86_64.zip
export PATH=$HOME/bin:$PATH
```
Then you need `protoc-gen-go` and `go-bindata` and other deps:
```
go get -u github.com/golang/protobuf/protoc-gen-go
go get -u github.com/jteeuwen/go-bindata/...
go get -u ./...
```
Installing `v8worker2` is time consuming, because it requires building V8. It
may take about 30 minutes:
```
go get -u github.com/ry/v8worker2
cd $GOPATH/src/github.com/ry/v8worker2
./build.py --use_ccache
```
You might also need Node and Yarn.
Finally the dependencies are installed.
Now you can build deno and run it:
```
> make
[redacted]
> ./deno testdata/001_hello.js
Hello World
>
```
## make commands
```bash
make deno # Builds the deno executable
make test # Runs the tests.
make fmt # Formats the code.
make clean # Cleans the build.
```
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