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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { red } from "../fmt/colors.ts";import { CAN_NOT_DISPLAY } from "./_constants.ts";import { buildMessage, diff, diffstr, format } from "../internal/mod.ts";import type { EqualOptions } from "./_types.ts";
type EqualErrorMessageOptions = Pick<  EqualOptions,  "formatter" | "msg">;
export function buildEqualErrorMessage<T>(  actual: T,  expected: T,  options: EqualErrorMessageOptions,): string {  const { formatter = format, msg } = options || {};  const msgSuffix = msg ? `: ${msg}` : ".";  const actualString = formatter(actual);  const expectedString = formatter(expected);
  let message = `Values are not equal${msgSuffix}`;
  try {    const stringDiff = (typeof actual === "string") &&      (typeof expected === "string");    const diffResult = stringDiff      ? diffstr(actual as string, expected as string)      : diff(actualString.split("\n"), expectedString.split("\n"));    const diffMsg = buildMessage(diffResult, { stringDiff }).join("\n");    message = `${message}\n${diffMsg}`;  } catch {    message = `${message}\n${red(CAN_NOT_DISPLAY)} + \n\n`;  }
  return message;}
export function buildNotEqualErrorMessage<T>(  actual: T,  expected: T,  options: EqualErrorMessageOptions,): string {  const { msg } = options || {};  let actualString: string;  let expectedString: string;
  try {    actualString = String(actual);  } catch {    actualString = CAN_NOT_DISPLAY;  }  try {    expectedString = String(expected);  } catch {    expectedString = CAN_NOT_DISPLAY;  }
  const msgSuffix = msg ? `: ${msg}` : ".";  return `Expected actual: ${actualString} not to be: ${expectedString}${msgSuffix}`;}