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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
type LineParseResult = {  key: string;  unquoted: string;  interpolated: string;  notInterpolated: string;};
type CharactersMap = { [key: string]: string };
const RE_KEY_VALUE =  /^\s*(?:export\s+)?(?<key>[a-zA-Z_]+[a-zA-Z0-9_]*?)\s*=[\ \t]*('\n?(?<notInterpolated>(.|\n)*?)\n?'|"\n?(?<interpolated>(.|\n)*?)\n?"|(?<unquoted>[^\n#]*)) *#*.*$/gm;
const RE_EXPAND_VALUE =  /(\${(?<inBrackets>.+?)(\:-(?<inBracketsDefault>.+))?}|(?<!\\)\$(?<notInBrackets>\w+)(\:-(?<notInBracketsDefault>.+))?)/g;
function expandCharacters(str: string): string {  const charactersMap: CharactersMap = {    "\\n": "\n",    "\\r": "\r",    "\\t": "\t",  };
  return str.replace(    /\\([nrt])/g,    ($1: keyof CharactersMap): string => charactersMap[$1] || "",  );}
function expand(str: string, variablesMap: { [key: string]: string }): string {  if (RE_EXPAND_VALUE.test(str)) {    return expand(      str.replace(RE_EXPAND_VALUE, function (...params) {        const {          inBrackets,          inBracketsDefault,          notInBrackets,          notInBracketsDefault,        } = params[params.length - 1];        const expandValue = inBrackets || notInBrackets;        const defaultValue = inBracketsDefault || notInBracketsDefault;
        let value: string | undefined = variablesMap[expandValue];        if (value === undefined) {          value = Deno.env.get(expandValue);        }        return value === undefined ? expand(defaultValue, variablesMap) : value;      }),      variablesMap,    );  } else {    return str;  }}
/** * Parse `.env` file output in an object. * * @example * ```ts * import { parse } from "https://deno.land/std@$STD_VERSION/dotenv/parse.ts"; * * const env = parse("GREETING=hello world"); * env.GREETING; // "hello world" * ``` */export function parse(rawDotenv: string): Record<string, string> {  const env: Record<string, string> = {};
  let match;  const keysForExpandCheck = [];
  while ((match = RE_KEY_VALUE.exec(rawDotenv)) !== null) {    const { key, interpolated, notInterpolated, unquoted } = match      ?.groups as LineParseResult;
    if (unquoted) {      keysForExpandCheck.push(key);    }
    env[key] = typeof notInterpolated === "string"      ? notInterpolated      : typeof interpolated === "string"      ? expandCharacters(interpolated)      : unquoted.trim();  }
  //https://github.com/motdotla/dotenv-expand/blob/ed5fea5bf517a09fd743ce2c63150e88c8a5f6d1/lib/main.js#L23  const variablesMap = { ...env };  keysForExpandCheck.forEach((key) => {    env[key] = expand(env[key]!, variablesMap);  });
  return env;}