Typescript error with reject and lt function in a pipe

[viveleroi]

I've written a pipe that gets all values from an object, parse strings to numbers or return null for anything else, reject null values, reject negative numbers, and sums the result. Functionally, it works fine, but the typescript inference isn't playing nicely and I'm not sure if it's a bug or some fault of mine.

const mockData = {
  foo: '1',
  bar: null,
  baz: 2,
  crud: -1
}

const parseFloatOrNull = v => {
  if (typeof v === 'number') {
    return v
  } else if (typeof v === 'string') {
    return Number.parseFloat(v) || null
  }

  return null
}

console.log(R.pipe(R.values, R.map(parseFloatOrNull), R.reject(R.either(R.isNil, R.lt(R.__, 0))), R.sum)(mockData))

TS shows an error for the R.reject function:

Argument of type '<P extends number, C extends readonly P[] | Record<string, P>>(collection: C) => C' is not assignable to parameter of type '(a: (number | null)[]) => readonly number[]'.
  Types of parameters 'collection' and 'a' are incompatible.
    Type '(number | null)[]' is not assignable to type 'readonly number[] | Record<string, number>'.
      Type '(number | null)[]' is not assignable to type 'Record<string, number>'.
        Index signature for type 'string' is missing in type '(number | null)[]'.ts(2345)

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