mirror of
https://github.com/denoland/deno.git
synced 2024-11-29 16:30:56 -05:00
58 lines
1.9 KiB
Markdown
58 lines
1.9 KiB
Markdown
# Standard library
|
|
|
|
Deno provides a set of standard modules that are audited by the core team and
|
|
are guaranteed to work with Deno.
|
|
|
|
Standard library is available at: https://deno.land/std/
|
|
|
|
## Versioning and stability
|
|
|
|
Standard library is not yet stable and therefore it is versioned differently
|
|
than Deno. For latest release consult https://deno.land/std/ or
|
|
https://deno.land/std/version.ts.
|
|
|
|
We strongly suggest to always use imports with pinned version of standard
|
|
library to avoid unintended changes.
|
|
|
|
## Troubleshooting
|
|
|
|
Some of the modules provided in standard library use unstable Deno APIs.
|
|
|
|
Trying to run such modules without `--unstable` CLI flag ends up with a lot of
|
|
TypeScript errors suggesting that some APIs on `Deno` namespace do not exist:
|
|
|
|
```typescript
|
|
// main.ts
|
|
import { copy } from "https://deno.land/std@0.50.0/fs/copy.ts";
|
|
|
|
copy("log.txt", "log-old.txt");
|
|
```
|
|
|
|
```shell
|
|
$ deno run --allow-read --allow-write main.ts
|
|
Compile file:///dev/deno/main.ts
|
|
Download https://deno.land/std@0.50.0/fs/copy.ts
|
|
Download https://deno.land/std@0.50.0/fs/ensure_dir.ts
|
|
Download https://deno.land/std@0.50.0/fs/_util.ts
|
|
error: TS2339 [ERROR]: Property 'utime' does not exist on type 'typeof Deno'.
|
|
await Deno.utime(dest, statInfo.atime, statInfo.mtime);
|
|
~~~~~
|
|
at https://deno.land/std@0.50.0/fs/copy.ts:90:16
|
|
|
|
TS2339 [ERROR]: Property 'utimeSync' does not exist on type 'typeof Deno'.
|
|
Deno.utimeSync(dest, statInfo.atime, statInfo.mtime);
|
|
~~~~~~~~~
|
|
at https://deno.land/std@0.50.0/fs/copy.ts:101:10
|
|
```
|
|
|
|
Solution to that problem requires adding `--unstable` flag:
|
|
|
|
```shell
|
|
$ deno run --allow-read --allow-write --unstable main.ts
|
|
```
|
|
|
|
To make sure that API producing error is unstable check
|
|
[`lib.deno.unstable.d.ts`](https://github.com/denoland/deno/blob/master/cli/js/lib.deno.unstable.d.ts)
|
|
declaration.
|
|
|
|
This problem should be fixed in the near future.
|