Invert Object

Requirements

• Export a function named invertObject that accepts a non-null object whose values are strings or numbers and returns a new ordinary object.
• Visit only the input's own enumerable string-keyed properties, in Object.entries order. Ignore inherited, non-enumerable, and symbol-keyed properties.
• For each entry, use String(value) as the output property key and the original input key as its string value. Preserve whitespace and empty strings.
• If multiple values produce the same output key, the last visited input key wins. For example, { first: "x", last: "x" } returns { x: "last" }; 1 and "1" also share an output key.
• Do not modify the input. Empty input returns a new empty object, and frozen input must work.
• Names such as "__proto__", "constructor", and "toString" must become own enumerable data properties without changing the output object's prototype.
• No recursive inversion or validation of invalid inputs is required. Arrays, null, and object, function, or symbol values are outside the challenge scope.

Examples

Input: invertObject({ first: "red", second: "green" })
Output: { red: "first", green: "second" }

Input: invertObject({ one: 1, two: 2 })
Output: { "1": "one", "2": "two" }

Input: invertObject({ first: "same", last: "same" })
Output: { same: "last" }

Input: invertObject({ numeric: 1, text: "1" })
Output: { "1": "text" }

Input: invertObject({})
Output: {}