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node_modules/iso-639-1/src/index.js

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+const LANGUAGES_LIST = require('./data.js');
+
+const LANGUAGES = {};
+const LANGUAGES_BY_NAME = {};
+const LANGUAGE_CODES = [];
+const LANGUAGE_NAMES = [];
+const LANGUAGE_NATIVE_NAMES = [];
+
+for (const code in LANGUAGES_LIST) {
+  const { name, nativeName } = LANGUAGES_LIST[code];
+  LANGUAGES[code] =
+    LANGUAGES_BY_NAME[name.toLowerCase()] =
+    LANGUAGES_BY_NAME[nativeName.toLowerCase()] =
+      { code, name, nativeName };
+  LANGUAGE_CODES.push(code);
+  LANGUAGE_NAMES.push(name);
+  LANGUAGE_NATIVE_NAMES.push(nativeName);
+}
+
+module.exports = class ISO6391 {
+  static getLanguages(codes = []) {
+    return codes.map(code =>
+      ISO6391.validate(code)
+        ? Object.assign({}, LANGUAGES[code])
+        : { code, name: '', nativeName: '' }
+    );
+  }
+
+  static getName(code) {
+    return ISO6391.validate(code) ? LANGUAGES_LIST[code].name : '';
+  }
+
+  static getAllNames() {
+    return LANGUAGE_NAMES.slice();
+  }
+
+  static getNativeName(code) {
+    return ISO6391.validate(code) ? LANGUAGES_LIST[code].nativeName : '';
+  }
+
+  static getAllNativeNames() {
+    return LANGUAGE_NATIVE_NAMES.slice();
+  }
+
+  static getCode(name) {
+    name = name.toLowerCase();
+    return LANGUAGES_BY_NAME.hasOwnProperty(name)
+      ? LANGUAGES_BY_NAME[name].code
+      : '';
+  }
+
+  static getAllCodes() {
+    return LANGUAGE_CODES.slice();
+  }
+
+  static validate(code) {
+    return LANGUAGES_LIST.hasOwnProperty(code);
+  }
+}