Function recordMap

applies the function mapping_funcs[K] to input input_data[K], for every key K in mapping_funcs
see RecordMapper to get an understanding of what mapping_funcs is supposed to look like, and how to type it.
moreover, the 3 generic parameters (R, U, D) used here are the same as the ones at RecordMapper, so check it out.

Example

const now_i_know_my = { a: 1, b: 2, c: 3, s: "nein" }
const now_i_know_my_greek = recordMap({
    a: (v) => `${v}-alpha`,
    b: (v) => `${v}-beta`,
    c: (v) => `${v}-theta`,
    s: (v) => 9
}, now_i_know_my)
// assert typeof now_i_know_my_greek extends { a: string, b: string, c: string, s: number }
console.debug(now_i_know_my_greek) // { a: "1-alpha", b: "2-beta", c: "theta", s: 9 }
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