jsdoc-runtime-example.js

import * as t from "jsdoc-runtime";

const tSqrt = t.declare.number
  // if input will not valid
  // return to last (this) workflow node
  .default(t.context.fallback(() => 0))
  // used in autotests
  .from(0)
  .to(t.int)

const sqrt = t`
  The function returns the square root of a number
  @param  ${tSqrt} number
  @return ${t.context.add({ result: tSqrt.or(t.long) })}
`(number => {
  const result = t`${t.context.result}`(Math.sqrt(number));
  return result;
});

TODO:

• https://ru.wikipedia.org/wiki/Контрактное_программирование