All files / json-patch-ot/transforms xRemove.ts

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1x
1x
1x
 
1x
 
1x
35x
35x
 
35x
35x
35x
 
35x
 
34x
15x
15x
15x
6x
 
 
 
6x
6x
 
 
 
28x
 
 
import {OpRemove, type Op} from '../../json-patch/op';
import {isRoot, isValidIndex, formatJsonPointer, isPathEqual} from '@jsonjoy.com/json-pointer';
import {lowerArrayPath} from './util';
import type {Operation} from '../../json-patch/types';
import {operationToOp} from '../../json-patch/codec/json';
 
export const xRemove = (add: OpRemove, op: Op): null | Op => {
  Iif (isRoot(add.path)) return null;
  Iif (isRoot(op.path)) return op;
 
  const lastIndex = add.path.length - 1;
  const lastStep = add.path[lastIndex];
  const isLastStepNumberLike = isValidIndex(lastStep);
 
  if (op instanceof OpRemove && isPathEqual(add.path, op.path) && isLastStepNumberLike) return null;
 
  if (isLastStepNumberLike) {
    const newPath = lowerArrayPath(add.path, op.path);
    const newFrom = op.from ? lowerArrayPath(add.path, op.from) : undefined;
    if (newPath || newFrom) {
      const operation: Operation = {
        ...op.toJson(),
        path: newPath ? formatJsonPointer(newPath) : op.path,
      };
      if (newFrom) (operation as any).from = newFrom;
      return operationToOp(operation, {});
    }
  }
 
  return op;
};