@nomiclabs/buidler/src/internal/util/lang.ts

Buidler is an extensible developer tool that helps smart contract developers increase productivity by reliably bringing together the tools they want.

export function fromEntries<T = any>(entries: Array<[string, any]>): T {
  return Object.assign(
    {},
    ...entries.map(([name, value]) => ({
      [name]: value,
    }))
  );
}