Finch Combinator

Reverses the order of three arguments. Useful for reordering arguments when the function expects them in reverse.

export const Finch = (x: Fn) => (y: Fn) => (z: Fn) => z(y)(x);
export const F = Finch;
export const Reverse = F;

const concat = (a: string) => (b: string) => a + b;
const reversed = Finch("first")("second")(concat);
reversed; // "secondfirst"

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