refactor: enforce code robustness

hello.anal

@@ -0,0 +1 @@
+🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆 🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆 🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆 🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆 🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆🍑🍆

hello.anus

@@ -0,0 +1 @@
+Hello

lib/constants.js

@@ -4,3 +4,4 @@ export const COMPILE = 'compile';
 export const ANALLIFY = 'anallify';
 export const STRINGIFY = 'stringify';
 export const ANAL_CHARACTERS = '🍑🍆';
+export const GRAMMAR = `${ANAL_CHARACTERS} `;

lib/dictionary.js

@@ -2,6 +2,7 @@ export const ERROR = {
   fileNotFound: 'File not found.',
   missingArgument: 'Missing argument.',
   notString: 'Only strings are accepted',
+  notAcceptedByGrammar: 'There are some characters not accepted by grammar.',
 };
 
 export const SUCCESS = {

lib/regexp.js

@@ -0,0 +1,4 @@
+import { ANAL_CHARACTERS, GRAMMAR } from './constants.js';
+
+export const matcher = new RegExp(`^[${GRAMMAR}]+$`, 'u');
+export const sequence = new RegExp(`${ANAL_CHARACTERS}`, 'g');

lib/std.js

@@ -3,6 +3,7 @@ import fs from 'node:fs';
 import { checker } from './utils.js';
 import { ERROR, SUCCESS } from './dictionary.js';
 import { ANAL_CHARACTERS } from './constants.js';
+import { matcher, sequence } from './regexp.js';
 
 export function anallify(string) {
   if (!checker(string)) {
@@ -34,38 +35,49 @@ export function stringify(anal) {
     throw new Error(ERROR.missingArgument);
   }
 
+  if (!matcher.test(anal)) {
+    throw new Error(ERROR.notAcceptedByGrammar);
+  }
+
   let string = '';
   const fragments = anal.split(' ');
-  const rule = new RegExp(`${ANAL_CHARACTERS}`, 'g');
 
   for (let index = 0; index < fragments.length; index += 1) {
     const fragment = fragments[index];
-    const character = String.fromCharCode(((fragment.match(rule) || []).length));
+    const character = String.fromCharCode(((fragment.match(sequence)).length));
     string = string.concat(character);
   }
 
   return string;
 }
 
 export function run(file) {
+  let contents = null;
+
   try {
-    const contents = fs.readFileSync(file, { encoding: 'utf-8' });
-    return stringify(contents);
+    contents = fs.readFileSync(file, { encoding: 'utf-8' });
   } catch (error) {
     throw new Error(ERROR.fileNotFound);
   }
+
+  return stringify(contents);
 }
 
 export function compile(file) {
+  let contents = null;
+  const fileOptions = { encoding: 'utf-8' };
+
   try {
-    const contents = fs.readFileSync(file, { encoding: 'utf-8' });
-    let filename = file.split('.');
-    filename = filename.filter((element, index) => index < filename.length - 1);
-    filename = filename.join('.');
-    fs.writeFileSync(`${filename}.anal`, anallify(contents), { encoding: 'utf-8' });
-    process.stdout.write(`${SUCCESS.compileSuccess}`);
-    return true;
+    contents = fs.readFileSync(file, fileOptions);
   } catch (error) {
     throw new Error(ERROR.fileNotFound);
   }
+
+  let filename = file.split('.');
+  filename = filename.filter((element, index) => index < filename.length - 1);
+  filename = filename.join('.');
+
+  fs.writeFileSync(`${filename}.anal`, anallify(contents), fileOptions);
+  process.stdout.write(`${SUCCESS.compileSuccess}`);
+  return true;
 }

tests/seeds.js

@@ -1,5 +1,6 @@
 export const NUMERIC_INPUT = 1;
 export const EMPTY_STRING_INPUT = '';
+export const NOT_ACCEPTED_INPUT = '🍑🍆 a';
 
 export const STRINGIFY_CORRECT_OUTPUT = 'B';
 export const STRINGIFY_WRONG_OUTPUT = '🍑🍆🍑🍆';

tests/std.test.js

@@ -9,6 +9,7 @@ import {
   RUN_WRONG_OUTPUT,
   ANAL_FILE_LOCATION,
   EMPTY_STRING_INPUT,
+  NOT_ACCEPTED_INPUT,
   RUN_CORRECT_OUTPUT,
   ANALLIFY_WRONG_OUTPUT,
   STRINGIFY_WRONG_OUTPUT,
@@ -60,6 +61,12 @@ describe('Stringify', () => {
       Error(ERROR.missingArgument),
     );
   });
+
+  test('Throw error if there are grammar-refused characters', () => {
+    expect(() => stringify(NOT_ACCEPTED_INPUT)).toThrowError(
+      Error(ERROR.notAcceptedByGrammar),
+    );
+  });
 });
 
 describe('Run', () => {