Parsing the encode result is broken in CLI about polyline

[roblabs]

The array of [lat,lng] points is being passed into encode as a rawString. The proper fix would be to add JSON.parse() to what is passed to encode in the CLI wrapper file. Its unlikely that this fix would break other users. (requesting @ Mapbox team to review)

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Change return polyline.encode(...)

return polyline.encode(rawString, p);

to

return polyline.encode(JSON.parse(rawString), p);

See:
https://github.com/mapbox/polyline/blob/4852d2468195f71cd240b50e48b87a8f5f4ce143/bin/polyline.bin.js#L75,L85

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Testing with these commands encodes a polyline, but returns extra quotes:

# returns extra quotes due to an extra stringify
#   "w{qeFj`wjVwAzJJ?"
cat points.unencoded.txt | ./node_modules/.bin/polyline --encode

Where points.unencoded.txt contains:

[[37.77996,-122.51158],[37.7804,-122.51348],[37.78034,-122.51348]]