Implement with clipanion

packages/frolint/package.json

@@ -8,6 +8,8 @@
     "@yamadayuki/ogh": "^1.1.0",
     "arg": "^4.1.0",
     "chalk": "^2.4.2",
+    "clipanion": "^2.1.3",
+    "command-exists": "^1.2.8",
     "eslint": "^6.0.1",
     "eslint-config-wantedly": "^0.7.11",
     "eslint-config-wantedly-typescript": "^0.7.11",
@@ -32,5 +34,8 @@
     "preuninstall": "node index.js uninstall",
     "test": "jest",
     "build": "tsc -b ."
+  },
+  "devDependencies": {
+    "@types/command-exists": "^1.2.0"
   }
 }

packages/frolint/src/Context.ts

@@ -0,0 +1,5 @@
+import { BaseContext } from "clipanion";
+
+export type FrolintContext = BaseContext & {
+  cwd: string;
+};

packages/frolint/src/commands/DefaultCommand.ts

@@ -0,0 +1,13 @@
+import { Command } from "clipanion";
+import { FrolintContext } from "../Context";
+
+export class DefaultCommand extends Command<FrolintContext> {
+  public static usage = Command.Usage({
+    description: "apply ESLint and Prettier",
+  });
+
+  @Command.Path()
+  public async execute() {
+    console.log("Hello world");
+  }
+}

packages/frolint/src/commands/HelpCommand.ts

@@ -0,0 +1,10 @@
+import { Command } from "clipanion";
+import { FrolintContext } from "../Context";
+
+export class HelpCommand extends Command<FrolintContext> {
+  @Command.Path("--help")
+  @Command.Path("-h")
+  public async execute() {
+    this.context.stdout.write(this.cli.usage(null));
+  }
+}

packages/frolint/src/commands/InstallCommand.ts

@@ -0,0 +1,25 @@
+import { Command } from "clipanion";
+import { FrolintContext } from "../Context";
+import { gitExists, isInsideGitRepository } from "../utils";
+
+export class InstallCommand extends Command<FrolintContext> {
+  public static usage = Command.Usage({
+    description: "install git pre-commit hook for frolint",
+    details: `
+      This command will insert the pre-commit hook script into .git/hooks/pre-commit. If there is no .git/hooks/pre-commit, this command will create the script file.
+    `,
+  });
+
+  @Command.Path("install")
+  public async execute() {
+    if (!gitExists()) {
+      return;
+    }
+
+    if (!isInsideGitRepository(this.context.cwd)) {
+      return;
+    }
+
+    this.context.stdout.write("Install");
+  }
+}

packages/frolint/src/commands/UninstallCommand.ts

@@ -0,0 +1,25 @@
+import { Command } from "clipanion";
+import { FrolintContext } from "../Context";
+import { gitExists, isInsideGitRepository } from "../utils";
+
+export class UninstallCommand extends Command<FrolintContext> {
+  public static usage = Command.Usage({
+    description: "uninstall git pre-commit hook for frolint",
+    details: `
+      This command will remove the pre-commit hook script from .git/hooks/pre-commit.
+    `,
+  });
+
+  @Command.Path("uninstall")
+  public async execute() {
+    if (!gitExists()) {
+      return;
+    }
+
+    if (!isInsideGitRepository(this.context.cwd)) {
+      return;
+    }
+
+    this.context.stdout.write("Uninstall");
+  }
+}

packages/frolint/src/commands/index.ts

@@ -0,0 +1,4 @@
+export { DefaultCommand } from "./DefaultCommand";
+export { HelpCommand } from "./HelpCommand";
+export { InstallCommand } from "./InstallCommand";
+export { UninstallCommand } from "./UninstallCommand";

packages/frolint/src/index.ts

@@ -1 +1,23 @@
-console.log("hello world");
+import { Cli } from "clipanion";
+import { DefaultCommand, HelpCommand, InstallCommand, UninstallCommand } from "./commands";
+import { FrolintContext } from "./Context";
+const pkg = require("../package.json");
+
+const cli = new Cli<FrolintContext>({
+  binaryLabel: "FROntend LINt Tool",
+  binaryName: "frolint",
+  binaryVersion: pkg.version,
+});
+
+cli.register(DefaultCommand);
+cli.register(HelpCommand);
+cli.register(InstallCommand);
+cli.register(UninstallCommand);
+
+// eslint-disable-next-line @typescript-eslint/no-floating-promises
+cli.runExit(process.argv.slice(2), {
+  stdin: process.stdin,
+  stdout: process.stdout,
+  stderr: process.stderr,
+  cwd: process.cwd(),
+});

packages/frolint/src/utils.ts

@@ -0,0 +1,18 @@
+import { execSync } from "child_process";
+import { sync as commandExistsSync } from "command-exists";
+
+export function isInsideGitRepository(cwd?: string) {
+  try {
+    return Boolean(
+      execSync("git rev-parse --is-inside-work-tree", { cwd })
+        .toString()
+        .trim()
+    );
+  } catch (err) {
+    return false;
+  }
+}
+
+export function gitExists() {
+  return commandExistsSync("git");
+}

tsconfig.json

@@ -1,12 +1,13 @@
 {
   "compilerOptions": {
-    "target": "es5",
+    "target": "es2017",
     "module": "commonjs",
     "strict": true,
     "noImplicitAny": true,
     "moduleResolution": "node",
     "allowSyntheticDefaultImports": true,
     "esModuleInterop": true,
-    "experimentalDecorators": true
+    "experimentalDecorators": true,
+    "resolveJsonModule": true
   }
 }

yarn.lock

@@ -1201,6 +1201,11 @@
   dependencies:
     "@babel/types" "^7.3.0"
 
+"@types/command-exists@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@types/command-exists/-/command-exists-1.2.0.tgz#d97e0ed10097090e4ab0367ed425b0312fad86f3"
+  integrity sha512-ugsxEJfsCuqMLSuCD4PIJkp5Uk2z6TCMRCgYVuhRo5cYQY3+1xXTQkSlPtkpGHuvWMjS2KTeVQXxkXRACMbM6A==
+
 "@types/eslint-visitor-keys@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#1ee30d79544ca84d68d4b3cdb0af4f205663dd2d"
@@ -2034,6 +2039,13 @@ cli-width@^2.0.0:
   resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
   integrity sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=
 
+clipanion@^2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/clipanion/-/clipanion-2.1.3.tgz#009975deb732620f9067af62452241c9ea14ec5a"
+  integrity sha512-3aFXWQrMG3wvEPvINE+RvRIVcAFCv3vvZzpjYJKJCJH9uykr+rGO+C1UjTFgwVs45oj0KqRBa4nVlAMtLID1tA==
+  dependencies:
+    chalk "^2.4.2"
+
 cliui@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.1.0.tgz#348422dbe82d800b3022eef4f6ac10bf2e4d1b49"