feat: add watch option

README.md

@@ -39,6 +39,10 @@ can change openapi file name
 
 path to an aspida config file
 
+### `-w`, `--watch`
+
+enable watch mode
+
 ### `--version`
 
 display version

package.json

@@ -31,6 +31,7 @@
   ],
   "dependencies": {
     "aspida": "^1.14.0",
+    "chokidar": "^3.6.0",
     "openapi-types": "^12.1.3",
     "typescript-json-schema": "^0.64.0"
   },

src/cli.ts

@@ -1,12 +1,13 @@
 import { getConfigs } from 'aspida/dist/cjs/getConfigs';
 import minimist from 'minimist';
 import build from '.';
-import type { ConfigFile } from './getConfig';
+import type { ConfigFile, PartialConfig } from './getConfig';
+import { watchIndexFiles } from './watchIndexFiles';
 
 export const run = (args: string[]) => {
   const argv: Record<string, string | undefined> = minimist(args, {
-    string: ['version', 'config', 'output'],
-    alias: { v: 'version', c: 'config', o: 'output' },
+    string: ['version', 'config', 'output', 'watch'],
+    alias: { v: 'version', c: 'config', o: 'output', w: 'watch' },
   });
 
   if (argv.version !== undefined) {
@@ -18,16 +19,24 @@ export const run = (args: string[]) => {
 
   if (configs.length > 1) {
     build(configs);
+
+    if (argv.watch !== undefined) {
+      configs.forEach((config) => watchIndexFiles(config.input, () => build(config)));
+    }
+
     return;
   }
 
   const config = configs[0];
-
-  build({
+  const option: PartialConfig = {
     ...config,
     openapi: {
       ...config.openapi,
       outputFile: argv.output ?? config.openapi?.outputFile,
     },
-  });
+  };
+
+  build(option);
+
+  if (argv.watch !== undefined) watchIndexFiles(config.input, () => build(option));
 };

src/watchIndexFiles.ts

@@ -0,0 +1,7 @@
+import chokidar from 'chokidar';
+
+export const watchIndexFiles = (dir: string, callback: () => void) => {
+  chokidar
+    .watch(dir, { ignoreInitial: true, ignored: /^(?!.*\/index\.ts$).*$/ })
+    .on('all', callback);
+};