Get call panics on empty json array or invalid json with an empty path - expecting an error to be returned

[pavanmachavolu]

Versions:
Go 1.18.1
jsonparser v1.1.1

jsonparser.Get panics on array input with empty string in path. Details below

Try these

jsonparser.Get([]byte(`{}`), "")
jsonparser.Get([]byte(`{`), "")

These return proper errors

non-existent -1 Key path not found

Now try the below ones

jsonparser.Get([]byte(`[]`), "")
jsonparser.Get([]byte(`[`), "")

Both of them panic with below error. Expecting these calls also return error like above.

panic: runtime error: index out of range [0] with length 0 [recovered]
	panic: runtime error: index out of range [0] with length 0

goroutine 119 [running]:
testing.tRunner.func1.2({0x105ba35e0, 0x140004bc5b8})
	/opt/homebrew/Cellar/go/1.18.1/libexec/src/testing/testing.go:1389 +0x1c8
testing.tRunner.func1()
	/opt/homebrew/Cellar/go/1.18.1/libexec/src/testing/testing.go:1392 +0x384
panic({0x105ba35e0, 0x140004bc5b8})
	/opt/homebrew/Cellar/go/1.18.1/libexec/src/runtime/panic.go:838 +0x204

[buger]

Fixed in v1.3.0 — all 8 unguarded empty-string key-component dereference sites are now guarded with len(...) > 0. Get/GetString/GetInt/GetFloat/GetBoolean/GetUnsafeString/Set/Delete/EachKey all return KeyPathNotFoundError instead of panicking. See DEFECT-260726-QS2V / KI-1.