If(
  Exists(Collection("foo")),
  "OK",
  CreateCollection({
    name: "foo",
  })
)

If(
  Exists(Collection("other")),
  "OK",
  CreateCollection({
    name: "other",
  })
)

If(
  Exists(Ref(Collection("other"), "123")),
  "OK",
  Create(Ref(Collection("other"), "123"))
)

Do(
  Create(Collection("foo"), {
    data: {
      a: 5,
      nested: {
        value: 15,
      },
    },
  }),
  Create(Collection("foo"), {
    data: {
      a: 6,
      nested: {
        value: 20,
      },
    },
  }),
  Create(Collection("foo"), {
    data: {
      a: 7,
      nested: {
        value: 25,
      },
    },
  }),
  Create(Collection("foo"), {
    data: {
      a: 8,
      nested: {
        value: 30,
      },
    },
  }),
  Create(Collection("foo"), {
    data: {
      a: 9,
      nested: {
        value: 30,
      },
      "my-ref": Ref(Collection("other"), "123"),
      string: "cat",
      timestamp: Now(),
      number: 12,
      date: Date('2012-02-01')
    },
  }),
)

CreateIndex({
  name: "ts",
  source: Collection("foo"),
  terms: [],
  values: [
    { field: "ts" },
    { field: "ref" },
  ],
})