-----------------------------------------------------
EXPRESSION: "0123456789".repeat(1000000 / 10)[Symbol.iterator]()
{
  "_type": "object",
  "_subtype": "iterator",
  "_objectId": "<filtered>",
  "_description": "String Iterator",
  "_preview": {
    "_type": "object",
    "_subtype": "iterator",
    "_description": "String Iterator",
    "_lossless": false,
    "_overflow": true,
    "_properties": [
      {
        "_name": "string",
        "_type": "string",
        "_value": "01234567890123456789012345678901234567890123456789…1234567890123456789012345678901234567890123456789",
        "_internal": true
      }
    ],
    "_entries": [
      {
        "_value": {
          "_type": "string",
          "_description": "0",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "string",
          "_description": "1",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "string",
          "_description": "2",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "string",
          "_description": "3",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "string",
          "_description": "4",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      }
    ]
  }
}

-----------------------------------------------------
EXPRESSION: arr = new Int8Array(new ArrayBuffer(1000000)); arr[Symbol.iterator]()
{
  "_type": "object",
  "_subtype": "iterator",
  "_objectId": "<filtered>",
  "_description": "Array Iterator",
  "_preview": {
    "_type": "object",
    "_subtype": "iterator",
    "_description": "Array Iterator",
    "_lossless": false,
    "_overflow": false,
    "_properties": [
      {
        "_name": "array",
        "_type": "object",
        "_subtype": "array",
        "_value": "Int8Array",
        "_internal": true
      },
      {
        "_name": "kind",
        "_type": "string",
        "_value": "values",
        "_internal": true
      }
    ],
    "_entries": null
  }
}

-----------------------------------------------------
EXPRESSION: map = new Map; for (var i = 0; i < 1000000; i++) map.set(i, i); map[Symbol.iterator]()
{
  "_type": "object",
  "_subtype": "iterator",
  "_objectId": "<filtered>",
  "_description": "Map Iterator",
  "_preview": {
    "_type": "object",
    "_subtype": "iterator",
    "_description": "Map Iterator",
    "_lossless": false,
    "_overflow": true,
    "_properties": [
      {
        "_name": "map",
        "_type": "object",
        "_subtype": "map",
        "_value": "Map",
        "_internal": true
      },
      {
        "_name": "kind",
        "_type": "string",
        "_value": "entries",
        "_internal": true
      }
    ],
    "_entries": [
      {
        "_value": {
          "_type": "object",
          "_subtype": "array",
          "_description": "Array",
          "_lossless": true,
          "_overflow": false,
          "_size": 2,
          "_properties": [
            {
              "_name": "0",
              "_type": "number",
              "_value": "0"
            },
            {
              "_name": "1",
              "_type": "number",
              "_value": "0"
            }
          ],
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "object",
          "_subtype": "array",
          "_description": "Array",
          "_lossless": true,
          "_overflow": false,
          "_size": 2,
          "_properties": [
            {
              "_name": "0",
              "_type": "number",
              "_value": "1"
            },
            {
              "_name": "1",
              "_type": "number",
              "_value": "1"
            }
          ],
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "object",
          "_subtype": "array",
          "_description": "Array",
          "_lossless": true,
          "_overflow": false,
          "_size": 2,
          "_properties": [
            {
              "_name": "0",
              "_type": "number",
              "_value": "2"
            },
            {
              "_name": "1",
              "_type": "number",
              "_value": "2"
            }
          ],
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "object",
          "_subtype": "array",
          "_description": "Array",
          "_lossless": true,
          "_overflow": false,
          "_size": 2,
          "_properties": [
            {
              "_name": "0",
              "_type": "number",
              "_value": "3"
            },
            {
              "_name": "1",
              "_type": "number",
              "_value": "3"
            }
          ],
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "object",
          "_subtype": "array",
          "_description": "Array",
          "_lossless": true,
          "_overflow": false,
          "_size": 2,
          "_properties": [
            {
              "_name": "0",
              "_type": "number",
              "_value": "4"
            },
            {
              "_name": "1",
              "_type": "number",
              "_value": "4"
            }
          ],
          "_entries": null
        }
      }
    ]
  }
}

-----------------------------------------------------
EXPRESSION: set = new Set; for (var i = 0; i < 1000000; i++) set.add(i); set[Symbol.iterator]()
{
  "_type": "object",
  "_subtype": "iterator",
  "_objectId": "<filtered>",
  "_description": "Set Iterator",
  "_preview": {
    "_type": "object",
    "_subtype": "iterator",
    "_description": "Set Iterator",
    "_lossless": false,
    "_overflow": true,
    "_properties": [
      {
        "_name": "set",
        "_type": "object",
        "_subtype": "set",
        "_value": "Set",
        "_internal": true
      },
      {
        "_name": "kind",
        "_type": "string",
        "_value": "values",
        "_internal": true
      }
    ],
    "_entries": [
      {
        "_value": {
          "_type": "number",
          "_description": "0",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "number",
          "_description": "1",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "number",
          "_description": "2",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "number",
          "_description": "3",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      },
      {
        "_value": {
          "_type": "number",
          "_description": "4",
          "_lossless": true,
          "_overflow": false,
          "_properties": null,
          "_entries": null
        }
      }
    ]
  }
}