It is not a perfect solution. Sometimes TLE.

e.g.

H E C P M E A O
K A D F O P J P
K D C B N G J H
G H P I C K N M
M O M D B O F A
B J N F C N F L
H B G I I L E L
J A I K G E L D

Your JavaScript looks like "Java"Script!

When i opened the full question page, i found that i had written it without tokenizing.

table is given as NATO

Why it works?

I think so. It's grammar is ambigious.

Another example:

fn add x y => x + y
add 1 2 + 1

Perhaps it is because the kata requires integer division, and JS uses floating-point numbers by default.

On the other hand, Kata itself does lack relevant random examples.

Oh my (__), thank you. I rely too much on the examples given below.

Wait for me to change my wording.

Good kata that took me two hours.

But, I don't think this kata has a good description.

In fact, when you try to move on a grid, you need to consider two things at the same time.

1. The direction you leave the grid cannot be opposite to the arrow direction of your current grid.
2. The grid you are going to cannot be opposite to the direction of your face when you come.

The description of the kata is vague about this point. So it took me an extra hour and a half.

it's not callback hell.

Haha, so kind of you.
I thought the author was not a native speaker of Chinese at first. I was just curious to ask how non-native speakers recognize and input Chinese characters.

Umm, I mean people whose mother tongue is not Chinese.

I wonder how did you input Chinese character in title. (Just for my curiosity)

The title description is not clear, and the horizontal and vertical directions of the array are not specified.

It is suggested to add some examples to help explain.

In ex-good-#5 in javascript, last row of the matrix have an unnecessary space.
It's just a small mistake, but makes me feel uncomfortable...

it("ex good #5", function(){
  var grid = preloaded.makeGrid([
  "                      ",    
  "   +-------+          ",
  "   |      +++---+     ",
  "X--+      +-+   X      "   // <---- Here!
  ]);
  preloaded.showGrid(grid);
  var actual = line(grid);
  Test.assertEquals(actual, true);
});