logic-branch-helpers

TypeScript helpers for logical branches.

Documentation

Example

import { todo, unimplemented, unreachable } from 'logic-branch-helpers';

function isEven(n: number): boolean {
  if (n < 1) {
    return unimplemented('numbers less than 1');
  }
  switch (n) {
    case 1:
      return false;
    case 2:
      return true;
    default:
      return todo('support numbers greater than 2');
  }
}

type Bit = 0 | 1;

function bitToString(b: Bit): string {
  switch (b) {
    case 0:
      return 'off';
    case 1:
      return 'on';
    default:
      return unreachable();
  }
}