Fix performance degradation (#16)

* Fix performance degradation

* Bump version to 1.0.2

Author: sgalal

README-zh-CN.md

@@ -9,10 +9,10 @@
 依次加载以下四个 `script` 标签：
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.min.js"></script>          <!-- 必须加载 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.cn2t.min.js"></script>     <!-- 需要简转繁时 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.t2cn.min.js"></script>     <!-- 需要繁转简时 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/bundle-browser.min.js"></script><!-- 必须加载 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.min.js"></script>          <!-- 必须加载 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.cn2t.min.js"></script>     <!-- 需要简转繁时 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.t2cn.min.js"></script>     <!-- 需要繁转简时 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/bundle-browser.min.js"></script><!-- 必须加载 -->
 ```
 
 **在 Node.js 中加载**

README-zh-TW.md

@@ -9,10 +9,10 @@
 依次載入以下四個 `script` 標籤：
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.min.js"></script>          <!-- 必須載入 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.cn2t.min.js"></script>     <!-- 需要簡轉繁時 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.t2cn.min.js"></script>     <!-- 需要繁轉簡時 -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/bundle-browser.min.js"></script><!-- 必須載入 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.min.js"></script>          <!-- 必須載入 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.cn2t.min.js"></script>     <!-- 需要簡轉繁時 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.t2cn.min.js"></script>     <!-- 需要繁轉簡時 -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/bundle-browser.min.js"></script><!-- 必須載入 -->
 ```
 
 **在 Node.js 中載入**

README.md

@@ -11,10 +11,10 @@ The JavaScript version of Open Chinese Convert (OpenCC)
 Import in HTML pages:
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.min.js"></script>          <!-- Required -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.cn2t.min.js"></script>     <!-- For Simplified to Traditional -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/data.t2cn.min.js"></script>     <!-- For Traditional Chinese to Simplified Chinese -->
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.1/bundle-browser.min.js"></script><!-- Required -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.min.js"></script>          <!-- Required -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.cn2t.min.js"></script>     <!-- For Simplified to Traditional -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/data.t2cn.min.js"></script>     <!-- For Traditional Chinese to Simplified Chinese -->
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@1.0.2/bundle-browser.min.js"></script><!-- Required -->
 ```
 
 **Import opencc-js in Node.js script**

main.js

@@ -118,15 +118,17 @@ function loadDict(s, type) {
 export function Converter(options) {
   if (options.from == null) throw new Error('Please provide the `from` option');
   if (options.to == null) throw new Error('Please provide the `to` option');
+  const dictFrom = loadDict(options.from, 'from');
+  const dictTo = loadDict(options.to, 'to');
   /**
    * The converter that performs the conversion.
    * @param {string} s The string to be converted.
    * @returns {string} The converted string.
    */
   function convert(s) {
     let res = s;
-    if (options.from !== 't') res = loadDict(options.from, 'from').convert(res);
-    if (options.to !== 't') res = loadDict(options.to, 'to').convert(res);
+    if (options.from !== 't') res = dictFrom.convert(res);
+    if (options.to !== 't') res = dictTo.convert(res);
     return res;
   }
   return convert;

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "opencc-js",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "The JavaScript version of Open Chinese Convert (OpenCC)",
   "main": "bundle-node.js",
   "repository": {