feat: init

2026-05-31 22:40:20 +09:00
commit 4d319b66be
8 changed files with 412 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,34 @@
+# dependencies (bun install)
+node_modules
+
+# output
+out
+dist
+*.tgz
+
+# code coverage
+coverage
+*.lcov
+
+# logs
+logs
+_.log
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# caches
+.eslintcache
+.cache
+*.tsbuildinfo
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store
--- a/README.md
+++ b/README.md
@@ -0,0 +1,15 @@
+# brainbox
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.ts
+```
+
+This project was created using `bun init` in bun v1.3.14. [Bun](https://bun.com) is a fast all-in-one JavaScript runtime.
--- a/bun.lock
+++ b/bun.lock
@@ -0,0 +1,68 @@
+{
+  "lockfileVersion": 1,
+  "configVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "brainbox",
+      "dependencies": {
+        "chalk": "^5.6.2",
+        "commander": "^15.0.0",
+        "ora": "^9.4.0",
+      },
+      "devDependencies": {
+        "@types/bun": "latest",
+        "@types/node": "^25.9.1",
+      },
+      "peerDependencies": {
+        "typescript": "^5",
+      },
+    },
+  },
+  "packages": {
+    "@types/bun": ["@types/bun@1.3.14", "", { "dependencies": { "bun-types": "1.3.14" } }, "sha512-h1hFqFVcvAvD9j9K7ZW7vd82aSA+rTdznZa+5bwvCwqSB1jmmfLcbIWhOLx1/+boy/xmjgCs/OMUL8hRJSmnPw=="],
+
+    "@types/node": ["@types/node@25.9.1", "", { "dependencies": { "undici-types": ">=7.24.0 <7.24.7" } }, "sha512-xfrlY7UD5rMJk3ZVJP8BNzS28J36YJg+xp+LPXV1TdWxr8uMH5A860QNxYDGQe/ylDSgjxE52Q9VnO7p75tJxg=="],
+
+    "ansi-regex": ["ansi-regex@6.2.2", "", {}, "sha512-Bq3SmSpyFHaWjPk8If9yc6svM8c56dB5BAtW4Qbw5jHTwwXXcTLoRMkpDJp6VL0XzlWaCHTXrkFURMYmD0sLqg=="],
+
+    "bun-types": ["bun-types@1.3.14", "", { "dependencies": { "@types/node": "*" } }, "sha512-4N0ig0fEomHt5R0KCFWjovxow98rIoRwKolrYdCcknNwMekCXRnWEUvgu5soYV8QXtVsrUD8B95MBOZGPvr6KQ=="],
+
+    "chalk": ["chalk@5.6.2", "", {}, "sha512-7NzBL0rN6fMUW+f7A6Io4h40qQlG+xGmtMxfbnH/K7TAtt8JQWVQK+6g0UXKMeVJoyV5EkkNsErQ8pVD3bLHbA=="],
+
+    "cli-cursor": ["cli-cursor@5.0.0", "", { "dependencies": { "restore-cursor": "^5.0.0" } }, "sha512-aCj4O5wKyszjMmDT4tZj93kxyydN/K5zPWSCe6/0AV/AA1pqe5ZBIw0a2ZfPQV7lL5/yb5HsUreJ6UFAF1tEQw=="],
+
+    "cli-spinners": ["cli-spinners@3.4.0", "", {}, "sha512-bXfOC4QcT1tKXGorxL3wbJm6XJPDqEnij2gQ2m7ESQuE+/z9YFIWnl/5RpTiKWbMq3EVKR4fRLJGn6DVfu0mpw=="],
+
+    "commander": ["commander@15.0.0", "", {}, "sha512-z67u4ZhzCL/Tydu1lJARtEZYWbWaN7oYLHbsuzocr6y4N6WZAagG3RQ4FW61V1/0+jImpj293XfrcYnd1qxtPg=="],
+
+    "get-east-asian-width": ["get-east-asian-width@1.6.0", "", {}, "sha512-QRbvDIbx6YklUe6RxeTeleMR0yv3cYH6PsPZHcnVn7xv7zO1BHN8r0XETu8n6Ye3Q+ahtSarc3WgtNWmehIBfA=="],
+
+    "is-interactive": ["is-interactive@2.0.0", "", {}, "sha512-qP1vozQRI+BMOPcjFzrjXuQvdak2pHNUMZoeG2eRbiSqyvbEf/wQtEOTOX1guk6E3t36RkaqiSt8A/6YElNxLQ=="],
+
+    "is-unicode-supported": ["is-unicode-supported@2.1.0", "", {}, "sha512-mE00Gnza5EEB3Ds0HfMyllZzbBrmLOX3vfWoj9A9PEnTfratQ/BcaJOuMhnkhjXvb2+FkY3VuHqtAGpTPmglFQ=="],
+
+    "log-symbols": ["log-symbols@7.0.1", "", { "dependencies": { "is-unicode-supported": "^2.0.0", "yoctocolors": "^2.1.1" } }, "sha512-ja1E3yCr9i/0hmBVaM0bfwDjnGy8I/s6PP4DFp+yP+a+mrHO4Rm7DtmnqROTUkHIkqffC84YY7AeqX6oFk0WFg=="],
+
+    "mimic-function": ["mimic-function@5.0.1", "", {}, "sha512-VP79XUPxV2CigYP3jWwAUFSku2aKqBH7uTAapFWCBqutsbmDo96KY5o8uh6U+/YSIn5OxJnXp73beVkpqMIGhA=="],
+
+    "onetime": ["onetime@7.0.0", "", { "dependencies": { "mimic-function": "^5.0.0" } }, "sha512-VXJjc87FScF88uafS3JllDgvAm+c/Slfz06lorj2uAY34rlUu0Nt+v8wreiImcrgAjjIHp1rXpTDlLOGw29WwQ=="],
+
+    "ora": ["ora@9.4.0", "", { "dependencies": { "chalk": "^5.6.2", "cli-cursor": "^5.0.0", "cli-spinners": "^3.2.0", "is-interactive": "^2.0.0", "is-unicode-supported": "^2.1.0", "log-symbols": "^7.0.1", "stdin-discarder": "^0.3.2", "string-width": "^8.1.0" } }, "sha512-84cglkRILFxdtA8hAvLNdMrtBpPNBTrQ9/ulg0FA7xLMnD6mifv+enAIeRmvtv+WgdCE+LPGOfQmtJRrVaIVhQ=="],
+
+    "restore-cursor": ["restore-cursor@5.1.0", "", { "dependencies": { "onetime": "^7.0.0", "signal-exit": "^4.1.0" } }, "sha512-oMA2dcrw6u0YfxJQXm342bFKX/E4sG9rbTzO9ptUcR/e8A33cHuvStiYOwH7fszkZlZ1z/ta9AAoPk2F4qIOHA=="],
+
+    "signal-exit": ["signal-exit@4.1.0", "", {}, "sha512-bzyZ1e88w9O1iNJbKnOlvYTrWPDl46O1bG0D3XInv+9tkPrxrN8jUUTiFlDkkmKWgn1M6CfIA13SuGqOa9Korw=="],
+
+    "stdin-discarder": ["stdin-discarder@0.3.2", "", {}, "sha512-eCPu1qRxPVkl5605OTWF8Wz40b4Mf45NY5LQmVPQ599knfs5QhASUm9GbJ5BDMDOXgrnh0wyEdvzmL//YMlw0A=="],
+
+    "string-width": ["string-width@8.2.1", "", { "dependencies": { "get-east-asian-width": "^1.5.0", "strip-ansi": "^7.1.2" } }, "sha512-IIaP0g3iy9Cyy18w3M9YcaDudujEAVHKt3a3QJg1+sr/oX96TbaGUubG0hJyCjCBThFH+tFpcIyoUHUn1ogaLA=="],
+
+    "strip-ansi": ["strip-ansi@7.2.0", "", { "dependencies": { "ansi-regex": "^6.2.2" } }, "sha512-yDPMNjp4WyfYBkHnjIRLfca1i6KMyGCtsVgoKe/z1+6vukgaENdgGBZt+ZmKPc4gavvEZ5OgHfHdrazhgNyG7w=="],
+
+    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+
+    "undici-types": ["undici-types@7.24.6", "", {}, "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg=="],
+
+    "yoctocolors": ["yoctocolors@2.1.2", "", {}, "sha512-CzhO+pFNo8ajLM2d2IW/R93ipy99LWjtwblvC1RsoSUMZgyLbYFr221TnSNT7GjGdYui6P459mw9JH/g/zW2ug=="],
+  }
+}
--- a/package.json
+++ b/package.json
@@ -0,0 +1,24 @@
+{
+  "name": "brainbox",
+  "module": "src/index.ts",
+  "type": "module",
+  "private": true,
+  "bin": {
+    "brainbox": "./src/index.ts"
+  },
+  "scripts": {
+    "cli": "bun run src/index.ts"
+  },
+  "devDependencies": {
+    "@types/bun": "latest",
+    "@types/node": "^25.9.1"
+  },
+  "peerDependencies": {
+    "typescript": "^5"
+  },
+  "dependencies": {
+    "chalk": "^5.6.2",
+    "commander": "^15.0.0",
+    "ora": "^9.4.0"
+  }
+}
--- a/src/commands/greet.ts
+++ b/src/commands/greet.ts
@@ -0,0 +1,16 @@
+import { logger } from "../utils/logger.js";
+
+interface GreetOptions {
+  uppercase?: boolean;
+  count?: string;
+}
+
+export function greet(name: string, options: GreetOptions) {
+  const message = `Hello, ${name}!`;
+  const output = options.uppercase ? message.toUpperCase() : message;
+  const count = Math.max(1, parseInt(options.count ?? "1", 10));
+
+  for (let i = 0; i < count; i++) {
+    logger.success(output);
+  }
+}
--- a/src/index.ts
+++ b/src/index.ts
@@ -0,0 +1,50 @@
+#!/usr/bin/env node
+import { Command } from "commander";
+import { readFileSync } from "fs";
+import { fileURLToPath } from "url";
+import { dirname, join } from "path";
+import { logger } from "./utils/logger.js";
+import { greet } from "./commands/greet.js";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+function getVersion(): string {
+  try {
+    const pkgPath = join(__dirname, "..", "package.json");
+    const pkg = JSON.parse(readFileSync(pkgPath, "utf-8"));
+    return pkg.version ?? "0.0.0";
+  } catch {
+    return "0.0.0";
+  }
+}
+
+function run(argv: string[] = process.argv) {
+  const program = new Command();
+
+  program
+    .name("brainbox")
+    .description("A CLI tool for brainbox")
+    .version(getVersion(), "-v, --version", "Display version number")
+    .helpOption("-h, --help", "Display help for command")
+    .configureOutput({
+      outputError: (str) => logger.error(str.replace("error: ", "")),
+    });
+
+  program
+    .command("greet")
+    .description("Greet someone")
+    .argument("<name>", "Name to greet")
+    .option("-u, --uppercase", "Convert greeting to uppercase")
+    .option("-c, --count <number>", "Repeat the greeting", "1")
+    .action(greet);
+
+  program.on("command:*", () => {
+    logger.error(`Unknown command: ${program.args.join(" ")}`);
+    program.help();
+  });
+
+  program.parse(argv);
+}
+
+run();
--- a/src/utils/logger.ts
+++ b/src/utils/logger.ts
@@ -0,0 +1,175 @@
+import chalk, { type ChalkInstance } from "chalk";
+import { appendFileSync, existsSync, mkdirSync, createWriteStream, type WriteStream } from "fs";
+import { dirname } from "path";
+
+export type LogLevel = "debug" | "info" | "success" | "warn" | "error" | "fatal";
+
+const LEVELS: Record<LogLevel, { rank: number; color: ChalkInstance; stderr: boolean }> = {
+  debug:   { rank: 0, color: chalk.gray,       stderr: false },
+  info:    { rank: 1, color: chalk.blue,       stderr: false },
+  success: { rank: 2, color: chalk.green,      stderr: false },
+  warn:    { rank: 3, color: chalk.yellow,     stderr: true },
+  error:   { rank: 4, color: chalk.red,        stderr: true },
+  fatal:   { rank: 5, color: chalk.bgRed.white,stderr: true },
+};
+
+const ICONS: Record<LogLevel, string> = {
+  debug:   "◆",
+  info:    "ℹ",
+  success: "✔",
+  warn:    "⚠",
+  error:   "✖",
+  fatal:   "▲",
+};
+
+export interface LoggerOptions {
+  /** Minimum log level to output. Default: "info" */
+  level?: LogLevel;
+  /** Include timestamps. Default: true */
+  timestamps?: boolean;
+  /** Enable colors. Default: auto-detected from TTY */
+  colors?: boolean;
+  /** Tag prefix for all messages. Default: none */
+  tag?: string;
+  /** File path to append logs to. Default: none */
+  file?: string;
+  /** Write JSON lines to file instead of plain text. Default: false */
+  json?: boolean;
+  /** Completely suppress console output. Default: false */
+  silent?: boolean;
+}
+
+class Logger {
+  private level: LogLevel;
+  private timestamps: boolean;
+  private colors: boolean;
+  private tag?: string;
+  private file?: string;
+  private json: boolean;
+  private silent: boolean;
+  private fileStream?: WriteStream;
+
+  constructor(options: LoggerOptions = {}) {
+    this.level = options.level ?? "info";
+    this.timestamps = options.timestamps ?? true;
+    this.colors = options.colors ?? chalk.level > 0;
+    this.tag = options.tag;
+    this.file = options.file;
+    this.json = options.json ?? false;
+    this.silent = options.silent ?? false;
+
+    if (this.file) {
+      const dir = dirname(this.file);
+      if (!existsSync(dir)) mkdirSync(dir, { recursive: true });
+      this.fileStream = createWriteStream(this.file, { flags: "a" });
+    }
+  }
+
+  private shouldLog(level: LogLevel): boolean {
+    return LEVELS[level].rank >= LEVELS[this.level].rank;
+  }
+
+  private formatTimestamp(): string {
+    const now = new Date();
+    const pad = (n: number) => n.toString().padStart(2, "0");
+    return `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())} ${pad(now.getHours())}:${pad(now.getMinutes())}:${pad(now.getSeconds())}`;
+  }
+
+  private format(level: LogLevel, message: string): { console: string; file: string } {
+    const ts = this.timestamps ? `[${this.formatTimestamp()}]` : "";
+    const tag = this.tag ? `[${this.tag}]` : "";
+    const icon = ICONS[level];
+    const levelStr = level.toUpperCase();
+
+    const consoleParts = [ts, tag, this.colors ? LEVELS[level].color(icon) : icon, message].filter(Boolean);
+    const consoleLine = consoleParts.join(" ");
+
+    const fileParts = [ts, tag, `[${levelStr}]`, message].filter(Boolean);
+    const fileLine = fileParts.join(" ") + "\n";
+
+    return { console: consoleLine, file: fileLine };
+  }
+
+  private formatJson(level: LogLevel, message: string): string {
+    return JSON.stringify({
+      timestamp: new Date().toISOString(),
+      level,
+      tag: this.tag,
+      message,
+    }) + "\n";
+  }
+
+  private write(level: LogLevel, message: string) {
+    if (!this.shouldLog(level)) return;
+
+    const { console: consoleLine, file: fileLine } = this.format(level, message);
+    const jsonLine = this.formatJson(level, message);
+
+    if (!this.silent) {
+      const out = LEVELS[level].stderr ? process.stderr : process.stdout;
+      out.write(consoleLine + "\n");
+    }
+
+    if (this.fileStream) {
+      this.fileStream.write(this.json ? jsonLine : fileLine);
+    }
+  }
+
+  debug(message: string)   { this.write("debug", message); }
+  info(message: string)    { this.write("info", message); }
+  success(message: string) { this.write("success", message); }
+  warn(message: string)    { this.write("warn", message); }
+  error(message: string)   { this.write("error", message); }
+  fatal(message: string)   { this.write("fatal", message); }
+
+  /** Create a child logger with an additional tag */
+  child(tag: string): Logger {
+    const combined = this.tag ? `${this.tag}:${tag}` : tag;
+    return new Logger({
+      level: this.level,
+      timestamps: this.timestamps,
+      colors: this.colors,
+      tag: combined,
+      file: this.file,
+      json: this.json,
+      silent: this.silent,
+    });
+  }
+
+  /** Update options at runtime */
+  configure(options: Partial<LoggerOptions>) {
+    if (options.level !== undefined) this.level = options.level;
+    if (options.timestamps !== undefined) this.timestamps = options.timestamps;
+    if (options.colors !== undefined) this.colors = options.colors;
+    if (options.tag !== undefined) this.tag = options.tag;
+    if (options.silent !== undefined) this.silent = options.silent;
+    if (options.json !== undefined) this.json = options.json;
+
+    if (options.file !== undefined && options.file !== this.file) {
+      this.fileStream?.end();
+      this.file = options.file;
+      if (this.file) {
+        const dir = dirname(this.file);
+        if (!existsSync(dir)) mkdirSync(dir, { recursive: true });
+        this.fileStream = createWriteStream(this.file, { flags: "a" });
+      } else {
+        this.fileStream = undefined;
+      }
+    }
+  }
+
+  /** Close file stream gracefully */
+  close() {
+    this.fileStream?.end();
+  }
+}
+
+/** Default global logger instance */
+export const logger = new Logger();
+
+/** Create a new logger instance with custom options */
+export function createLogger(options: LoggerOptions): Logger {
+  return new Logger(options);
+}
+
+export type { Logger };
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    // Environment setup & latest features
+    "lib": ["ESNext"],
+    "target": "ESNext",
+    "module": "Preserve",
+    "moduleDetection": "force",
+    "jsx": "react-jsx",
+    "allowJs": true,
+    "types": ["bun"],
+
+    // Bundler mode
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedIndexedAccess": true,
+    "noImplicitOverride": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false
+  }
+}