{
  "version": 3,
  "sources": ["../../../src/hooks/use-instance-id/index.ts"],
  "sourcesContent": ["/**\n * WordPress dependencies\n */\nimport { useMemo } from '@wordpress/element';\n\nconst instanceMap = new WeakMap< object, number >();\n\n/**\n * Creates a new id for a given object.\n *\n * @param object Object reference to create an id for.\n * @return The instance id (index).\n */\nfunction createId( object: object ): number {\n\tconst instances = instanceMap.get( object ) || 0;\n\tinstanceMap.set( object, instances + 1 );\n\treturn instances;\n}\n\n/**\n * Specify the useInstanceId *function* signatures.\n *\n * More accurately, useInstanceId distinguishes between three different\n * signatures:\n *\n * 1. When only object is given, the returned value is a number\n * 2. When object and prefix is given, the returned value is a string\n * 3. When preferredId is given, the returned value is the type of preferredId\n *\n * @param object Object reference to create an id for.\n */\nfunction useInstanceId( object: object ): number;\nfunction useInstanceId( object: object, prefix: string ): string;\nfunction useInstanceId< T extends string | number >(\n\tobject: object,\n\tprefix: string,\n\tpreferredId?: T\n): T;\n\n/**\n * Provides a unique instance ID.\n *\n * @param object        Object reference to create an id for.\n * @param [prefix]      Prefix for the unique id.\n * @param [preferredId] Default ID to use.\n * @return The unique instance id.\n */\nfunction useInstanceId(\n\tobject: object,\n\tprefix?: string,\n\tpreferredId?: string | number\n): string | number {\n\treturn useMemo( () => {\n\t\tif ( preferredId ) {\n\t\t\treturn preferredId;\n\t\t}\n\t\tconst id = createId( object );\n\n\t\treturn prefix ? `${ prefix }-${ id }` : id;\n\t}, [ object, preferredId, prefix ] );\n}\n\nexport default useInstanceId;\n"],
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