Function parseExpected

packages/tools/doctest/src/Transform.ts:122–128

(expected: string, source: string, offset: number, file: string, line: number)

}

const parseExpected = (expected: string, source: string, offset: number, file: string, line: number): void => {
  const parsed = parseSync(`${file}?doctest-expected`, `const __expected = (${expected})`, { lang: "ts" })
  const error = parsed.errors[0]
  if (error !== undefined) {
    fail(source, offset, file, line, `invalid doctest expected expression: ${error.message}`)
  }
}

/**
 * Transforms trailing doctest assertion comments into executable assertions.