Negative array indexes

[marcushaddon]

• allows for Python/Go/etc style negative array index access
• a negative array index will be counted from the end of the array
• for example the map { "results[-1].id": "lastId" } will map the id of the last result to lastId
• a negative array index whos absolute value is greater than the arrays length returns undefined
• while this doesn't work the other way ({ "lastItem": "items[-1]" }), the result of that sort of mapping is unchanged, and so no new surprising behaviors are introduced by this change

[wankdanker]

Thanks @marcushaddon! Published in object-mapper@6.2.0.