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Handle Mapnik errors when creating VT #82

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Handle Mapnik errors when creating VT #82

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8 changes: 7 additions & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -242,7 +242,7 @@ Bridge.getVector = function(source, map, z, x, y, callback) {
// are out of bounds at zoom-level z
var vtile = new mapnik.VectorTile(+z,+x,+y, {buffer_size:16*map.bufferSize});
} catch(err) {
return callback(err, null, headers);
return callback(invalid(err.message, null, headers));
}

map.extent = vtile.extent();
Expand Down Expand Up @@ -465,3 +465,9 @@ Bridge.prototype.getIndexableDocs = function(pointer, callback) {
feature();
});
};

function invalid(msg) {
var err = new Error(msg);
err.code = 'EINVALID';
return err;
}