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index.d.ts	668 B	View DL Edit
index.js	3.85 MB	View DL Edit
index.mjs	3.81 MB	View DL Edit
index.tests.ts	1.26 MB	View DL Edit
LICENSE	1.05 MB	View DL Edit
package.json	767 B	View DL Edit
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Edit file: /lib/node_modules/npm/node_modules/just-diff/index.mjs

/*
  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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