FM / just-diff

/home/techb158/.nvm/versions/node/v16.20.2/lib/node_modules/npm/node_modules/just-diff/

/home/techb158/.nvm/versions/node/v16.20.2/lib/node_modules/npm/node_modules/just-diff

Name	Size	Mode	Actions
index.d.ts	668	0644	edit dl rm
index.js	3944	0644	edit dl rm
index.mjs	3897	0644	edit dl rm
index.tests.ts	1293	0644	edit dl rm
LICENSE	1078	0644	edit dl rm
package.json	767	0644	edit dl rm
rollup.config.js	120	0644	edit dl rm

Edit: /home/techb158/.nvm/versions/node/v16.20.2/lib/node_modules/npm/node_modules/just-diff/index.mjs (3897B)

/*
  const obj1 = {a: 4, b: 5};
  const obj2 = {a: 3, b: 5};
  const obj3 = {a: 4, c: 5};

diff(obj1, obj2);
  [
    { "op": "replace", "path": ['a'], "value": 3 }
  ]

diff(obj2, obj3);
  [
    { "op": "remove", "path": ['b'] },
    { "op": "replace", "path": ['a'], "value": 4 }
    { "op": "add", "path": ['c'], "value": 5 }
  ]

// using converter to generate jsPatch standard paths
  // see http://jsonpatch.com
  import {diff, jsonPatchPathConverter} from 'just-diff'
  diff(obj1, obj2, jsonPatchPathConverter);
  [
    { "op": "replace", "path": '/a', "value": 3 }
  ]

diff(obj2, obj3, jsonPatchPathConverter);
  [
    { "op": "remove", "path": '/b' },
    { "op": "replace", "path": '/a', "value": 4 }
    { "op": "add", "path": '/c', "value": 5 }
  ]

// arrays
  const obj4 = {a: 4, b: [1, 2, 3]};
  const obj5 = {a: 3, b: [1, 2, 4]};
  const obj6 = {a: 3, b: [1, 2, 4, 5]};

diff(obj4, obj5);
  [
    { "op": "replace", "path": ['a'], "value": 3 }
    { "op": "replace", "path": ['b', 2], "value": 4 }
  ]

diff(obj5, obj6);
  [
    { "op": "add", "path": ['b', 3], "value": 5 }
  ]

// nested paths
  const obj7 = {a: 4, b: {c: 3}};
  const obj8 = {a: 4, b: {c: 4}};
  const obj9 = {a: 5, b: {d: 4}};

diff(obj7, obj8);
  [
    { "op": "replace", "path": ['b', 'c'], "value": 4 }
  ]

diff(obj8, obj9);
  [
    { "op": "replace", "path": ['a'], "value": 5 }
    { "op": "remove", "path": ['b', 'c']}
    { "op": "add", "path": ['b', 'd'], "value": 4 }
  ]
*/

function diff(obj1, obj2, pathConverter) {
  if (!obj1 || typeof obj1 != 'object' || !obj2 || typeof obj2 != 'object') {
    throw new Error('both arguments must be objects or arrays');
  }

pathConverter ||
    (pathConverter = function(arr) {
      return arr;
    });

function getDiff(obj1, obj2, basePath, diffs) {
    var obj1Keys = Object.keys(obj1);
    var obj1KeysLength = obj1Keys.length;
    var obj2Keys = Object.keys(obj2);
    var obj2KeysLength = obj2Keys.length;
    var path;

for (var i = 0; i < obj1KeysLength; i++) {
      var key = Array.isArray(obj1) ? Number(obj1Keys[i]) : obj1Keys[i];
      if (!(key in obj2)) {
        path = basePath.concat(key);
        diffs.remove.push({
          op: 'remove',
          path: pathConverter(path),
        });
      }
    }

for (var i = 0; i < obj2KeysLength; i++) {
      var key = Array.isArray(obj2) ? Number(obj2Keys[i]) : obj2Keys[i];
      var obj1AtKey = obj1[key];
      var obj2AtKey = obj2[key];
      if (!(key in obj1)) {
        path = basePath.concat(key);
        var obj2Value = obj2[key];
        diffs.add.push({
          op: 'add',
          path: pathConverter(path),
          value: obj2Value,
        });
      } else if (obj1AtKey !== obj2AtKey) {
        if (
          Object(obj1AtKey) !== obj1AtKey ||
          Object(obj2AtKey) !== obj2AtKey
        ) {
          path = pushReplace(path, basePath, key, diffs, pathConverter, obj2);
        } else {
          if (
            !Object.keys(obj1AtKey).length &&
            !Object.keys(obj2AtKey).length &&
            String(obj1AtKey) != String(obj2AtKey)
          ) {
            path = pushReplace(path, basePath, key, diffs, pathConverter, obj2);
          } else {
            getDiff(obj1[key], obj2[key], basePath.concat(key), diffs);
          }
        }
      }
    }

return diffs;
  }
  const finalDiffs = getDiff(obj1, obj2, [], {remove: [], replace: [], add: []});
  return finalDiffs.remove
    .reverse()
    .concat(finalDiffs.replace)
    .concat(finalDiffs.add);
}

function pushReplace(path, basePath, key, diffs, pathConverter, obj2) {
  path = basePath.concat(key);
  diffs.replace.push({
    op: 'replace',
    path: pathConverter(path),
    value: obj2[key],
  });
  return path;
}

function jsonPatchPathConverter(arrayPath) {
  return [''].concat(arrayPath).join('/');
}

export {diff, jsonPatchPathConverter};

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