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/**
* Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.
* @param input The object that was passed.
*/
export function createInvalidObservableTypeError(input: any) {
// TODO: We should create error codes that can be looked up, so this can be less verbose.
return new TypeError(
`You provided ${
input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`
} where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`
);
}
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