Sha256: 639037d6c84d060d68179cf334b2e3dc3f3a92ea3080d18b2e21a6d1ed0f11a1
Contents?: true
Size: 1.07 KB
Versions: 7
Compression:
Stored size: 1.07 KB
Contents
var isArray = require('../lang/isArray');
var append = require('./append');
/*
* Helper function to flatten to a destination array.
* Used to remove the need to create intermediate arrays while flattening.
*/
function flattenTo(arr, result, level) {
if (arr == null) {
return result;
} else if (level === 0) {
append(result, arr);
return result;
}
var value,
i = -1,
len = arr.length;
while (++i < len) {
value = arr[i];
if (isArray(value)) {
flattenTo(value, result, level - 1);
} else {
result.push(value);
}
}
return result;
}
/**
* Recursively flattens an array.
* A new array containing all the elements is returned.
* If `shallow` is true, it will only flatten one level.
*/
function flatten(arr, level) {
level = level == null? -1 : level;
return flattenTo(arr, [], level);
}
module.exports = flatten;
Version data entries
7 entries across 7 versions & 1 rubygems