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nurbek-ab/diff.js

Created January 11, 2017 12:12
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Revisions

  1. nurbek-ab revised this gist Jan 11, 2017. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions diff.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,3 +1,4 @@
    // http://stackoverflow.com/questions/31683075/how-to-do-a-deep-comparison-between-2-objects-with-lodash
    function compare(a, b) {

    var result = {
  2. nurbek-ab created this gist Jan 11, 2017.
    50 changes: 50 additions & 0 deletions diff.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,50 @@
    function compare(a, b) {

    var result = {
    different: [],
    missing_from_first: [],
    missing_from_second: []
    };

    _.reduce(a, function (result, value, key) {
    if (b[key] != undefined) {
    if (_.isEqual(value, b[key])) {
    return result;
    } else {
    if (typeof (a[key]) != typeof ({}) || typeof (b[key]) != typeof ({})) {
    //dead end.
    result.different.push(key);
    return result;
    } else {
    var deeper = compare(a[key], b[key]);
    result.different = result.different.concat(_.map(deeper.different, (sub_path) => {
    return key + "." + sub_path;
    }));

    result.missing_from_second = result.missing_from_second.concat(_.map(deeper.missing_from_second, (sub_path) => {
    return key + "." + sub_path;
    }));

    result.missing_from_first = result.missing_from_first.concat(_.map(deeper.missing_from_first, (sub_path) => {
    return key + "." + sub_path;
    }));
    return result;
    }
    }
    } else {
    result.missing_from_second.push(key);
    return result;
    }
    }, result);

    _.reduce(b, function (result, value, key) {
    if (a[key] != undefined) {
    return result;
    } else {
    result.missing_from_first.push(key);
    return result;
    }
    }, result);

    return result;
    }