remove dependency on CLDR

lib/wotutils.js

@@ -18,7 +18,6 @@ const Ajv = require('ajv');
 const url = require('url');
 const fs = require('fs');
 const path = require('path');
-const cldr = require('cldr');
 
 function validateTd(td) {
     const TDSchema =
@@ -40,21 +39,32 @@ function isOpInForms(op, forms) {
         .some(e=>e === op);
 }
 
-function textDirection(lang) {
-    let dir = 'auto';
-    try {
-        const ori = cldr.extractLayout(lang);
-        if (ori.characterOrder === 'left-to-right') {
-            dir = 'ltr'
-        } else if (ori.characterOrder === 'right-to-left') {
-            dir = 'rtl'
-        }
-    } catch (e) {
-        if (lang === "az-Arab") {
-            dir = 'rtl'
-        }
+function textDirection(langid) {
+    // based on CLDR and other sources.
+    const rtlLangs = [
+        "ar-AE","ar-BH","ar-DJ","ar-DZ","ar-EG","ar-EH","ar-ER","ar-IL","ar-IQ",
+        "ar-JO","ar-KM","ar-KW","ar-LB","ar-LY","ar-MA","ar-MR","ar-OM","ar-PS",
+        "ar-QA","ar-SA","ar-SD","ar-SO","ar-SS","ar-SY","ar-TD","ar-TN","ar-YE","ar",
+        "az-Arab",
+        "ckb-IR","ckb",
+        "fa-AF","fa",
+        "he",
+        "ks",
+        "lrc-IQ","lrc",
+        "mzn",
+        "pa-Arab",
+        "ps-PK","ps",
+        "sd",
+        "ug",
+        "ur-IN","ur",
+        "uz-Arab",
+        "yi",
+    ];
+    if (langid === undefined || langid === "") {
+        return 'auto';
+    } else {
+        return (rtlLangs.includes(langid) ? 'rtl' : 'ltr');
     }
-    return dir;
 }
 
 function normalizeTd(td) {

package.json

@@ -44,7 +44,6 @@
   "dependencies": {
     "ajv": "6.12.0",
     "api-spec-converter": "2.11.0",
-    "cldr": "5.5.4",
     "colors": "1.4.0",
     "csv-string": "3.1.8",
     "javascript-obfuscator": "0.28.1",