Function find

Finds a target in document specified by JSON Pointer. Also returns the object containing the target and key used to reference that object.

Throws Error('NOT_FOUND') if pointer does not result into a value in the middle of the path. If the last element of the path does not result into a value, the lookup succeeds with val set to undefined. It can be used to discriminate missing values, because undefined is not a valid JSON value.

If last element in array is targeted using "-", e.g. "/arr/-", use isArrayEnd to verify that:

const ref = find({arr: [1, 2, 3], ['arr', '-']});
if (isArrayReference(ref)) {
  if (isArrayEnd(ref)) {
    // ...
  }
}
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