/* c8 ignore start */

export function assert(value: boolean, message?: string): asserts value
export function assert<T>(
  value: T | undefined,
  message?: string
): asserts value is T
export function assert(value: any, message = "Assertion failed") {
  if (value === false || value === null || value === undefined) {
    const error = new Error(trimLines(message))
    error.stack = removeLine(error.stack, "assert.ts")
    throw error
  }
}

const trimLines = (s: string) =>
  s
    .split("\n")
    .map(s => s.trim())
    .join("\n")

const removeLine = (s = "", targetText: string) =>
  s
    .split("\n")
    .filter(line => !line.includes(targetText))
    .join("\n")

/* c8 ignore end */