Getting one of optional types
Hi everyone, how can I get one of the types of | type? I can't create subtypes as the type is generated (Sub1 | Sub2 is impossible). https://www.typescriptlang.org/play?#code/C4TwDgpgBAogHgQwLZgDbQLxQN4CgoFQD6RokAdshAFxQBEAigK4QBOId+hSECAzk1YQ+tPIXHFS4CJR606ERCnQBGThMIALCNtp9grAJbkA5lwIBfXBagAfHOclkZVeczYdHPfoOGjH4iTOsjT0ishoEABM6hpQwMLAegbGZuJWVrgA9FlQmgD2AO5QAMYI5FCGUCYQwFD55ND5AGbxBXzQznwA-LjOUABKwkyowCpQWGKEQdIhbizssQQ8fAJCIg5xTrOuYUqRagFaOqH6RqaOGbjZuf1DAqMTUADK+TwA4jJshiUAYkzkEoAHngEXQABo6N41sI6OC9mCIGoAHw3eqsKB8N61TSpKCoQwAa06uL4QA
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