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import { contextFinder, helpMessage } from "./src/deno/context_finder.ts";
export const fileExists = async (filename: string): Promise<boolean> => {  try {    await Deno.stat(filename);    // successful, file or directory must exist    return true;  } catch (error) {    if (error instanceof Deno.errors.NotFound) {      // file or directory does not exist      return false;    } else {      // unexpected error, maybe permissions, pass it along      throw error;    }  }};
async function runFromCommandLine() {  if (import.meta.main !== true) {    return false;  }  // Check if --help argument is used  const args = Deno.args;  if (args[0] === "--help") {    console.info(helpMessage);    Deno.exit(1);  }
  // Check command line arguments are set (minimum is 5: node index.js <file> <file> <context>)  if (args.length < 3) {    console.error("Invalid arguments. See --help");    Deno.exit(1);  }
  // Initialise data to be passed into function call  const fileToRead = args[0];  const fileToWriteTo = args[1];  const contexts = (args.slice(2)).filter((arg) => arg.indexOf("--") == -1);
  // Check fileToRead exists  const fileToReadExists = await fileExists(fileToRead);  if (!fileToReadExists) {    console.error("File to read does not exist.");    Deno.exit(1);  }
  // Call the function  contextFinder(contexts, fileToRead, fileToWriteTo);}
/* If ran from the command line */await runFromCommandLine();
export { contextFinder };