feat: Support ES module.

package.json

@@ -5,7 +5,9 @@
   "homepage": "https://jaywcjlove.github.io/image2uri/",
   "license": "MIT",
   "author": "Kenny <wowohoo@qq.com>",
-  "main": "lib/index.js",
+  "type": "module",
+  "exports": "./lib/index.js",
+  "main": "./lib/index.js",
   "scripts": {
     "prepare": "npm run build",
     "watch": "tsbb watch --disable-babel",
@@ -21,7 +23,11 @@
     "lib",
     "src"
   ],
-  "jest": {},
+  "jest": {
+    "transformIgnorePatterns": [
+      "<rootDir>/node_modules/?!(.*)"
+    ]
+  },
   "keywords": [
     "image",
     "uri",
@@ -31,9 +37,10 @@
     "image2uri"
   ],
   "dependencies": {
-    "node-fetch": "~2.6.1"
+    "node-fetch": "^3.2.3"
   },
   "devDependencies": {
+    "@types/node": "~17.0.24",
     "tsbb": "^3.7.2"
   }
 }

src/index.ts

@@ -16,19 +16,9 @@ export const extTypeMap = {
   '.svg': 'image/svg+xml'
 }
 
-export type ExtType = '.png'
-  | '.apng'
-  | '.gif'
-  | '.jpg'
-  | '.jpeg'
-  | '.bm'
-  | '.bmp'
-  | '.webp'
-  | '.ico'
-  | '.svg';
-
+export type ExtType =  keyof typeof extTypeMap;
 export default function image2uri(file: string, options: { ext?: string } = {}): string | Promise<string> {
-  const ext = options.ext || path.extname(file) as ExtType;
+  const ext: ExtType = (options.ext || path.extname(file)) as ExtType;
   const contentType = extTypeMap[ext]
   if (validUrl(file)) {
     return fetch(file).then((response) => response.buffer()).then((buffer) => {

tsconfig.json

@@ -1,9 +1,19 @@
 {
   "compilerOptions": {
-    "module": "CommonJS",
-    "esModuleInterop": true,
-    "declaration": true,
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "node",
     "sourceMap": true,
+    "declaration": true,
+    "allowSyntheticDefaultImports": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitThis": true,
+    "strictBindCallApply": true,
+    "strictNullChecks": true,
+    "strictPropertyInitialization": true,
+    "stripInternal": true,
+    "esModuleInterop": false,
+    "noImplicitAny": true,
     "outDir": "lib",
     "baseUrl": "."
   },