JSON Type

JSON Type inspects any value and identifies its JSON type. The Type output is a string matching standard JSON type names: "object", "array", "string", "number", "boolean", or "null". Two convenience boolean outputs indicate whether the value is an object or an array, which are the most commonly checked types.

The node correctly distinguishes booleans from numbers (which is non-trivial in Swift, since both bridge to NSNumber). It uses Core Foundation type detection to ensure true/false are reported as "boolean" and not "number".

Object input:

Input: {"x": 1}

Type: "object", Is Object: true, Is Array: false

Array input:

Input: [1, 2, 3]

Type: "array", Is Object: false, Is Array: true

String input:

Input: "hello"

Type: "string", Is Object: false, Is Array: false

Number input:

Input: 42

Type: "number", Is Object: false, Is Array: false

Boolean input:

Input: true

Type: "boolean", Is Object: false, Is Array: false

Null input:

Input: (nothing connected)

Type: "null", Is Object: false, Is Array: false

• Validating data types before processing in downstream nodes
• Branching logic based on whether received data is an object or array
• Debugging data flow by inspecting types at various points in the graph
• Handling polymorphic data that may arrive as different types from external sources

• The Type output matches standard JSON type naming conventions, making it easy to compare with string values using a String Compare node.
• Is Object and Is Array are convenience outputs — they save you from needing a String Compare node for the two most common checks.
• Both OrderedJSON and plain dictionaries report as "object".
• Use this node before JSON Break to determine whether to expect named ports (object) or indexed ports (array).