Option to create path if "Path not found in document"

[bennycode]

Given a plain object like this:

{}

If I want to add a property with the path of /compilerOptions/module and the value of nodenext I am expecting the object to be:

{
  "compilerOptions": {
    "module": "nodenext"
  }
}

Unfortunatey, jsonpatch crashes with the message of:

Path not found in document

So I have to split the path and create its parts individually which is quite cumbersome. Can this functionality instead be integrated into this library?

[bennycode]

Here is my current workaround with an ensurePaths function:

import {apply_patch} from 'jsonpatch';

function ensurePaths(json: Record<string, unknown>, pathParts: string[]) {
  let current = json;
  for (let i = 0; i < pathParts.length - 1; i++) {
    const part = pathParts[i];
    if (part) {
      if (!current[part]) {
        current[part] = {};
      }
      current = current[part] as Record<string, unknown>;
    }
  }
}

export function setJsonValue(json: Record<string, unknown>, jsonPatchPath: string, value: string) {
  const pathParts = jsonPatchPath.split('/').slice(1);
  ensurePaths(json, pathParts);
  try {
    return apply_patch(json, [{op: 'replace', path: jsonPatchPath, value}]);
  } catch (error) {
    // Catch "Replace operation must point to an existing value!"
    return apply_patch(json, [{op: 'add', path: jsonPatchPath, value}]);
  }
}

I could improve the error handling if #41 gets implemented.