const dmp = new DiffMatchPatch();

const diff_main = (pre, post) => {

dmp.Diff_Timeout = 1;

dmp.Diff_EditCost = 5;

const diff = dmp.diff_main(pre ? pre : "", post ? post : "");

dmp.diff_cleanupSemantic(diff);

//dmp.diff_cleanupEfficiency(diff);

return diff.map((arr, i) => {

switch (arr[0]) {

case -1 :

if (arr[1] === " " ){

return <Text key={"e"+i}>{arr[1]}</Text>

} else {

return <Text key={"d"+i} style={[styles.del, {backgroundColor: Utils.colors().diffDel}]}>{arr[1]}</Text>

}

case 1:

if (arr[1] === " " ){

return <Text key={"e"+i}>{arr[1]}</Text>

} else {

return <Text key={"a"+i} style={[styles.add, {backgroundColor: Utils.colors().diffAdd}]}>{arr[1]}</Text>

}

default:

return <Text key={"e"+i}>{arr[1]}</Text>

}

});

},