List all possible paths using lodash

Question

I would like to list all paths of object that lead to leafs

Example:

var obj = {
 a:\"1\",
 b:{
  foo:\"2\",
  bar:3
 },
 c:[0,1]
}

Answer 1

Based on Nick answer, here is a TS / ES6 imports version of the same code

import {isArray,flatMap,map,keys,isPlainObject,concat} from "lodash";

// See https://stackoverflow.com/a/36490174/82609
export function paths(obj: any, parentKey?: string): string[] {
  var result: string[];
  if (isArray(obj)) {
    var idx = 0;
    result = flatMap(obj, function(obj: any) {
      return paths(obj, (parentKey || '') + '[' + idx++ + ']');
    });
  } else if (isPlainObject(obj)) {
    result = flatMap(keys(obj), function(key) {
      return map(paths(obj[key], key), function(subkey) {
        return (parentKey ? parentKey + '.' : '') + subkey;
      });
    });
  } else {
    result = [];
  }
  return concat(result, parentKey || []);
}