Not parsing or running path with iterator correctly

[krisalyssa]

iex(1)> Jqish.parse(".foo[].bar.baz")
{:error, %Jqish.SyntaxError{before: "iterator", token: nil}}
iex(2)> Jqish.parse(".foo.[].bar.baz")
{:ok, ["foo", :iterator, "bar", "baz"]}
iex(3)> Jqish.run('{"foo":[{"bar":{"baz":"quux"}}]}', ".foo.[].bar.baz")
{:error,
 %Jqish.UnexpectedValueError{
   path: ["foo", :iterator, "bar", "baz"],
   target: '{"foo":[{"bar":{"baz":"quux"}}]}'
 }}
iex(4)> Jqish.parse(".foo|.[].bar.baz")
{:error, %Jqish.SyntaxError{before: nil, token: "|"}}

On the other hand:

$ echo '{"foo":[{"bar":{"baz":"quux"}}]}' | jq ".foo[].bar.baz"
"quux"
$ echo '{"foo":[{"bar":{"baz":"quux"}}]}' | jq ".foo.[].bar.baz"
jq: error: syntax error, unexpected '[', expecting FORMAT or QQSTRING_START (Unix shell quoting issues?) at <top-level>, line 1:
.foo.[].bar.baz
jq: 1 compile error
$ echo '{"foo":[{"bar":{"baz":"quux"}}]}' | jq ".foo|.[].bar.baz"
"quux"

There appear to be three issues here.

1. jqish is not successfully parsing syntax it should.
2. jqish if parsing syntax it shouldn't.
3. In the latter case, even though it accepts the erroneous syntax, it doesn't run it correctly.