feat: read config from .blurhash-maprc.js file

.gitignore

@@ -123,10 +123,11 @@ dist
 
 # Compiled code
 lib/
-bin/
 
 # Generated files
 blurhash_encoder
 **/blurhash_encoder
-src/hashmap.json
-test/**/*.hash
+hashmap.json
+**/hashmap.json
+test/**/*.hash
+.blurhash-maprc.js

bin/cli.ts

@@ -0,0 +1,100 @@
+#!/usr/bin/env node
+
+const nodemon = require('nodemon');
+import { program } from 'commander';
+import { existsSync, readFileSync } from 'fs';
+import { resolve } from 'path';
+import { BlurHashMap, BlurHashMapConfig } from '../src';
+import {
+  ComponentRange,
+  HashMapJsonSaveToTarget,
+  zBlurHashMapConfig,
+} from '../src/blur-hash-map';
+
+const RC_CONFIG = resolve('.blurhash-maprc.js');
+
+interface CommanderActionOptions {
+  assets: string;
+  extensions: string;
+  componentX?: ComponentRange;
+  componentY?: ComponentRange;
+  targetJson?: HashMapJsonSaveToTarget;
+}
+const packageJson: Record<string, string> = JSON.parse(
+  readFileSync('./package.json', 'utf-8')
+);
+
+const watchChanges = async (options: BlurHashMapConfig): Promise<void> => {
+  const blurHashGenerator = new BlurHashMap(options);
+  return blurHashGenerator.init().then(() => {
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access
+    nodemon({
+      watch: options.assetsRoot,
+      ext: [...(options.imageExtensions || []), 'hash'].join(''),
+    })
+      .on('quit', function () {
+        throw 'nodemon exited';
+      })
+      .on('restart', function (changedFiles = []) {
+        for (const file of changedFiles) {
+          blurHashGenerator.generateOrDelete(file);
+        }
+      });
+  });
+};
+
+const readConfig = (): Promise<BlurHashMapConfig> => {
+  return new Promise((res, rej) => {
+    if (existsSync(RC_CONFIG)) {
+      void import(RC_CONFIG).then((config: Record<string, unknown>) => {
+        if ('default' in config) {
+          res(zBlurHashMapConfig.parse(config.default));
+        } else {
+          rej('`blurhash-maprc.js` must have default export');
+        }
+      });
+    } else {
+      rej();
+    }
+  });
+};
+
+const readCommandParams = () => {
+  program
+    .version(packageJson.version)
+    .option('-a, --assets <assets>', 'Required. Set path to your assets folder')
+    .option(
+      '-e, --extensions <extensions>',
+      'Optional. Define image file extensions. Default: jpg,jpeg,png,bmp,webp'
+    )
+    .option('-x, --componentX <componentX>', 'Optional. Default : 4')
+    .option('-y, --componentY <componentY>', 'Optional. Default : 3')
+    .option('-t, --target <targetJson>', 'Optional. Default : project root')
+    .action((options: CommanderActionOptions) => {
+      if (typeof options.assets !== 'string') {
+        throw Error(
+          "Please define assets paths to be watched with the '-a' key"
+        );
+      }
+      if (typeof options.assets !== 'string') {
+        throw Error(
+          "Please define assets paths to be watched with the '-a' key"
+        );
+      }
+
+      const config: BlurHashMapConfig = {
+        assetsRoot: options.assets,
+        imageExtensions: BlurHashMap.toAllowedImageTypeList(options.extensions),
+        targetJson: options.targetJson,
+        components: { x: options.componentX, y: options.componentY },
+      };
+      void watchChanges(config);
+    });
+  program.parse(process.argv);
+};
+
+readConfig()
+  .then(watchChanges)
+  .catch(() => {
+    readCommandParams();
+  });

package.json

@@ -2,19 +2,18 @@
   "name": "blurhash-map",
   "version": "1.0.0",
   "description": "A template for creating npm packages using TypeScript and VSCode",
-  "main": "./lib/index.js",
+  "main": "./lib/src/index.js",
   "bin": {
-    "blurhash-map": "bin/cli.js"
+    "blurhash-map": "./lib/bin/cli.js"
   },
   "files": [
-    "lib/**/*",
-    "bin/**/*"
+    "lib/**/*"
   ],
   "scripts": {
-    "build": "tsc --project tsconfig.build.json",
-    "cli": "tsc --project tsconfig.cli.json",
+    "build": "npm run clean && tsc --project tsconfig.build.json && npm run copy:c",
     "clean": "rm -rf ./lib/",
     "cm": "cz",
+    "copy:c": "cp -r src/C lib/src/C",
     "lint": "eslint ./src/ --fix",
     "prepare": "husky install",
     "semantic-release": "semantic-release",
@@ -72,7 +71,8 @@
     "semantic-release": "^21.0.1",
     "ts-jest": "^29.1.2",
     "ts-node": "^10.2.1",
-    "typescript": "^4.2.4"
+    "typescript": "^4.2.4",
+    "zod": "^3.22.4"
   },
   "config": {
     "commitizen": {