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9

That gives me Property 'flat' does not exist on type 'string[][]'. `
– lonix
Commented Jun 11, 2019 at 13:17
5

@lonix you need to add esnext to libs in tsconfig to make that work
– baao
Commented Jun 11, 2019 at 13:20
1

Oh okay now that makes sense :-) But I excluded that for a reason, I'm not using anything bleeding edge till it's current. Would be nice to have that feature right now though!
– lonix
Commented Jun 11, 2019 at 13:27
I added an option to use concat, you have to specify the type of bar to be string[] and not string[][]
– Kokodoko
Commented Jun 11, 2019 at 13:28
I think this is the best answer for those using the latest features, unfortunately for me I'll need to use the old for loop! :)
– lonix
Commented Jun 11, 2019 at 13:29

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Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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