Import autocomplete crashes when the deno/deps doesn't exists

[danilosampaio]

A Deno fresh install doens't creates the deno/deps automatically, so that vscode_deno plugin crashes when trying to show module suggestions.

[Error - 11:33:20] Request textDocument/completion failed. Message: Request textDocument/completion failed with message: ENOENT: no such file or directory, scandir 'C:\Users\danilo\AppData\Local\deno\deps' Code: -32603

To Reproduce

1. install deno (a new fresh install, without any deps)
2. install vscode_deno plugin
3. create a settings file (.vscode/settings.json)

{
  "deno.enable": true,
}

4. create a .ts file
5. try to autocomplete import * as test from 'http'

Expected behavior

Show module suggestions.

Screenshots

Versions

vscode: 1.42.2
deno: 1.3.1
extension: 2.0.13

[buttercubz]

@danilosampaio try to call the file using absolute paths ./anyfile.ts

[axetroy]

confirmed! The BUG should be here

vscode_deno/server/src/language/completion.ts

Lines 18 to 24 in 6d7295b

	getAllDenoCachedDeps()
	.then((deps) => {
	cache.set(deps);
	})
	.catch(() => {
	// do nothing
	});

vscode_deno/core/deno_deps.ts

Lines 32 to 36 in 6d7295b

	export async function getAllDenoCachedDeps(): Promise<Deps[]> {
	const depsRootDir = getDenoDepsDir();
	const deps: Deps[] = [];
	const protocols = await fs.readdir(depsRootDir);

I will fix it later, or if someone does it, that's even better

[danilosampaio]

@axetroy thanks for you feedback.
i'd like to to my first contribution :)

[danilosampaio]

@axetroy fix it with PR #169
thanks for your help.