From 958926b3d7cfbe1104abfaf09a77c17d4c6db654 Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 20:43:03 +0900
Subject: [PATCH 1/6] =?UTF-8?q?docs:=20=EB=AC=B8=EC=9E=90=EC=97=B4=20?=
 =?UTF-8?q?=EB=8D=A7=EC=85=88=20=EA=B3=84=EC=82=B0=EA=B8=B0=20=EC=9A=94?=
 =?UTF-8?q?=EA=B5=AC=EC=82=AC=ED=95=AD=20=EC=9E=91=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 13420b29..2e190c8e 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,22 @@
-# javascript-calculator-precourse
\ No newline at end of file
+# javascript-calculator-precourse
+
+## 기능 요구 사항
+
+문자열 덧셈 계산기를 구현한다. 입력한 문자열에 포함된 숫자를 모두 더한 결과를 반환한다.
+
+### 기본 규칙
+
+- 빈 문자열 입력 시 0을 반환한다.
+- 쉼표(,) 또는 콜론(:)을 구분자로 사용하여 숫자를 분리할 수 있다.
+
+### 커스텀 구분자
+
+- `//`와 `\n` 사이에 위치하는 문자를 커스텀 구분자로 사용할 수 있다.
+
+### 예외 처리
+
+- 사용자가 잘못된 값을 입력한 경우 `"[ERROR]"`로 시작하는 메시지를 출력하고 `Error`를 발생시킨 후 프로그램을 종료한다.
+- 잘못된 값 예시
+  - 음수 입력
+  - 숫자가 아닌 값 입력
+  - 구분자 규칙을 따르지 않은 입력 등

From 3f10ffb746804e235e1a374beb5c6ae070ad65bc Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 22:26:17 +0900
Subject: [PATCH 2/6] =?UTF-8?q?feat(App):=20=EC=8B=A4=ED=96=89=20=EB=A1=9C?=
 =?UTF-8?q?=EC=A7=81=20=EB=B0=8F=20=EC=9E=85=EB=A0=A5-=EC=B6=9C=EB=A0=A5?=
 =?UTF-8?q?=20=EA=B5=AC=EC=A1=B0=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/App.js | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/App.js b/src/App.js
index 091aa0a5..c4b0a4f2 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,5 +1,22 @@
+import { Console } from "@woowacourse/mission-utils";
+
+import IsInputValidate from "./Validate.js";
+import { calculateSumOfNumbers } from "./calculator.js";
+
 class App {
-  async run() {}
+  async run() {
+    const inputs = await Console.readLineAsync(
+      "덧셈할 문자열을 입력해 주세요.\n"
+    );
+
+    const numbers = parseInput(inputs);
+    IsInputValidate(numbers);
+
+    const sum = calculateSumOfNumbers(numbers);
+    Console.print(`결과 : ${sum}`);
+
+    return;
+  }
 }
 
 export default App;

From e27bfdd1341c778278e4f4f1b8e66c095ee7b38a Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 22:26:55 +0900
Subject: [PATCH 3/6] =?UTF-8?q?feat(inputParser):=20=EB=AC=B8=EC=9E=90?=
 =?UTF-8?q?=EC=97=B4=20=EC=9E=85=EB=A0=A5=20=ED=8C=8C=EC=8B=B1=20=EB=B0=8F?=
 =?UTF-8?q?=20=EC=BB=A4=EC=8A=A4=ED=85=80=20=EA=B5=AC=EB=B6=84=EC=9E=90=20?=
 =?UTF-8?q?=EC=B2=98=EB=A6=AC=20=EB=A1=9C=EC=A7=81=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/inputParser.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/inputParser.js

diff --git a/src/inputParser.js b/src/inputParser.js
new file mode 100644
index 00000000..2ce2d624
--- /dev/null
+++ b/src/inputParser.js
@@ -0,0 +1,21 @@
+const parseInput = (inputs) => {
+  const formattedInput = inputs.replace(/\\n/g, "\n");
+
+  let numbers;
+
+  if (formattedInput.startsWith("//")) {
+    const delimiterEndIndex = formattedInput.indexOf("\n");
+    const customDelimiter = formattedInput.slice(2, delimiterEndIndex);
+    const numbersString = formattedInput.slice(delimiterEndIndex + 1);
+
+    numbers = numbersString
+      .split(customDelimiter)
+      .flatMap((part) => part.split(",").flatMap((p) => p.split(":")));
+  } else {
+    numbers = inputs.split(/[,:]/);
+  }
+
+  return numbers;
+};
+
+export default parseInput;

From e7cf19ea371dbd174f6dd53afaa98939a66f04ac Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 22:28:00 +0900
Subject: [PATCH 4/6] =?UTF-8?q?feat(validate):=20=EC=9E=85=EB=A0=A5=20?=
 =?UTF-8?q?=EC=9C=A0=ED=9A=A8=EC=84=B1=20=EA=B2=80=EC=82=AC=20=EA=B5=AC?=
 =?UTF-8?q?=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/validate.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 src/validate.js

diff --git a/src/validate.js b/src/validate.js
new file mode 100644
index 00000000..73b87d73
--- /dev/null
+++ b/src/validate.js
@@ -0,0 +1,12 @@
+const IsInputValidate = (numbers) => {
+  numbers.forEach((number) => {
+    if (number === "") {
+      throw new Error("[ERROR] 빈 문자열은 입력할 수 없습니다.");
+    }
+    if (number <= 0) {
+      throw new Error("[ERROR] 양수만 입력할 수 있습니다.");
+    }
+  });
+};
+
+export default IsInputValidate;

From 2b1a75d30b26a30c611e2387bbcbf8d372837dba Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 22:28:36 +0900
Subject: [PATCH 5/6] =?UTF-8?q?feat(calculator):=20=EC=9E=85=EB=A0=A5?=
 =?UTF-8?q?=EB=B0=9B=EC=9D=80=20=EC=88=AB=EC=9E=90=20=ED=95=A9=EC=82=B0=20?=
 =?UTF-8?q?=EA=B8=B0=EB=8A=A5=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/calculator.js | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 src/calculator.js

diff --git a/src/calculator.js b/src/calculator.js
new file mode 100644
index 00000000..852acb46
--- /dev/null
+++ b/src/calculator.js
@@ -0,0 +1,5 @@
+export const calculateSumOfNumbers = (numbers) => {
+  return numbers.reduce((acc, curr) => {
+    return acc + parseInt(curr);
+  }, 0);
+};

From 088f62428ad3785a8f00e75ea699d05e3c8b158f Mon Sep 17 00:00:00 2001
From: kimywann <kimywan10@gmail.com>
Date: Mon, 20 Oct 2025 22:43:42 +0900
Subject: [PATCH 6/6] =?UTF-8?q?fix(App):=20parseInput=20=EB=88=84=EB=9D=BD?=
 =?UTF-8?q?=20=EC=9E=84=ED=8F=AC=ED=8A=B8=20=EC=B6=94=EA=B0=80=20=EB=B0=8F?=
 =?UTF-8?q?=20validate=20=EB=AA=A8=EB=93=88=20=EC=86=8C=EB=AC=B8=EC=9E=90?=
 =?UTF-8?q?=20=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/App.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/App.js b/src/App.js
index c4b0a4f2..874282d7 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,6 +1,7 @@
 import { Console } from "@woowacourse/mission-utils";
 
-import IsInputValidate from "./Validate.js";
+import parseInput from "./inputParser.js";
+import IsInputValidate from "./validate.js";
 import { calculateSumOfNumbers } from "./calculator.js";
 
 class App {