language-tags - npm Package Compare versions

Comparing version 1.0.5 to 1.0.6

lib/index.js

@@ -11,7 +11,7 @@ /**
 
-var Tag = require('./Tag');
-var Subtag = require('./Subtag');
+var Tag = require('./Tag.js');
+var Subtag = require('./Subtag.js');
 
-var index = require('language-subtag-registry/data/json/index');
-var registry = require('language-subtag-registry/data/json/registry');
+var index = require('language-subtag-registry/data/json/index.json');
+var registry = require('language-subtag-registry/data/json/registry.json');
 
@@ -109,3 +109,3 @@ var tags = function(tag) {
 	macrolanguage = macrolanguage.toLowerCase();
-	if (!require('language-subtag-registry/data/json/macrolanguage')[macrolanguage]) {
+	if (!require('language-subtag-registry/data/json/macrolanguage.json')[macrolanguage]) {
 		throw new Error('\'' + macrolanguage + '\' is not a macrolanguage.');
@@ -143,3 +143,3 @@ }
 tags.date = function() {
-	return require('language-subtag-registry/data/json/meta')['File-Date'];
+	return require('language-subtag-registry/data/json/meta.json')['File-Date'];
 };

lib/Subtag.js

@@ -11,115 +11,116 @@ /**
 
-var index = require('language-subtag-registry/data/json/index');
-var registry = require('language-subtag-registry/data/json/registry');
+var index = require('language-subtag-registry/data/json/index.json');
+var registry = require('language-subtag-registry/data/json/registry.json');
 
-module.exports = Subtag;
+class Subtag {
+	static ERR_NONEXISTENT = 1;
+	static ERR_TAG = 2;
 
-Subtag.ERR_NONEXISTENT = 1;
-Subtag.ERR_TAG = 2;
+	/**
+	 * @param {string} subtag
+	 * @param {string} type
+	 */
+	constructor (subtag, type) {
+		var types, i, record;
 
-function Subtag(subtag, type) {
-	var types, i, record, error;
+		// Lowercase for consistency (case is only a formatting convention, not a standard requirement).
+		subtag = subtag.toLowerCase();
+		type = type.toLowerCase();
 
-	// Lowercase for consistency (case is only a formatting convention, not a standard requirement).
-	subtag = subtag.toLowerCase();
-	type = type.toLowerCase();
+		function error (code, message) {
+			var err;
 
-	error = function(code, message) {
-		var err;
+			err = new Error(message);
+			err.code = code;
+			err.subtag = subtag;
+			throw err;
+		};
 
-		err = new Error(message);
-		err.code = code;
-		err.subtag = subtag;
-		throw err;
-	};
+		types = index[subtag];
+		if (!types) {
+			error(Subtag.ERR_NONEXISTENT, 'Non-existent subtag \'' + subtag + '\'.');
+		}
 
-	types = index[subtag];
-	if (!types) {
-		error(Subtag.ERR_NONEXISTENT, 'Non-existent subtag \'' + subtag + '\'.');
+		i = types[type];
+		if (!i && 0 !== i) {
+			error(Subtag.ERR_NONEXISTENT, 'Non-existent subtag \'' + subtag + '\' of type \'' + type + '\'.');
+		}
+
+		record = registry[i];
+		if (!record.Subtag) {
+			error(Subtag.ERR_TAG, '\'' + subtag + '\' is a \'' + type + '\' tag.');
+		}
+
+		this.data = { subtag, record, type };
 	}
 
-	i = types[type];
-	if (!i && 0 !== i) {
-		error(Subtag.ERR_NONEXISTENT, 'Non-existent subtag \'' + subtag + '\' of type \'' + type + '\'.');
+	type () {
+		return this.data.type;
 	}
 
-	record = registry[i];
-	if (!record.Subtag) {
-		error(Subtag.ERR_TAG, '\'' + subtag + '\' is a \'' + type + '\' tag.');
+	descriptions () {
+		// Every record has one or more descriptions (stored as an array).
+		return this.data.record.Description;
 	}
 
-	this.data = {};
-	this.data.subtag = subtag;
-	this.data.record = record;
-	this.data.type = type;
-}
+	preferred () {
+		var type, preferred = this.data.record['Preferred-Value'];
 
-Subtag.prototype.type = function() {
-	return this.data.type;
-};
+		if (preferred) {
+			type = this.data.type;
+			if (type === 'extlang') {
+				type = 'language';
+			}
 
-Subtag.prototype.descriptions = function() {
+			return new Subtag(preferred, type);
+		}
 
-	// Every record has one or more descriptions (stored as an array).
-	return this.data.record.Description;
-};
+		return null;
+	}
 
-Subtag.prototype.preferred = function() {
-	var type, preferred = this.data.record['Preferred-Value'];
+	script () {
+		var script = this.data.record['Suppress-Script'];
 
-	if (preferred) {
-		type = this.data.type;
-		if (type === 'extlang') {
-			type = 'language';
+		if (script) {
+			return new Subtag(script, 'script');
 		}
 
-		return new Subtag(preferred, type);
+		return null;
 	}
 
-	return null;
-};
+	scope () {
+		return this.data.record.Scope || null;
+	}
 
-Subtag.prototype.script = function() {
-	var script = this.data.record['Suppress-Script'];
+	deprecated () {
+		return this.data.record.Deprecated || null;
+	}
 
-	if (script) {
-		return new Subtag(script, 'script');
+	added () {
+		return this.data.record.Added;
 	}
 
-	return null;
-};
+	comments () {
+		// Comments don't always occur for records, so switch to an empty array if missing.
+		return this.data.record.Comments || [];
+	}
 
-Subtag.prototype.scope = function() {
-	return this.data.record.Scope || null;
-};
+	format () {
+		var subtag = this.data.subtag;
 
-Subtag.prototype.deprecated = function() {
-	return this.data.record.Deprecated || null;
-};
+		switch (this.data.type) {
+			case 'region':
+				return subtag.toUpperCase();
+			case 'script':
+				return subtag[0].toUpperCase() + subtag.slice(1);
+		}
 
-Subtag.prototype.added = function() {
-	return this.data.record.Added;
-};
+		return subtag;
+	}
 
-Subtag.prototype.comments = function() {
-
-	// Comments don't always occur for records, so switch to an empty array if missing.
-	return this.data.record.Comments || [];
-};
-
-Subtag.prototype.format = function() {
-	var subtag = this.data.subtag;
-
-	switch (this.data.type) {
-	case 'region':
-		return subtag.toUpperCase();
-	case 'script':
-		return subtag[0].toUpperCase() + subtag.substr(1);
+	toString () {
+		return this.format();
 	}
+}
 
-	return subtag;
-};
-
-Subtag.prototype.toString = function() {
-	return this.format();
-};
+module.exports = Subtag;

lib/Tag.js

@@ -11,396 +11,400 @@ /**
 
-var index = require('language-subtag-registry/data/json/index');
-var registry = require('language-subtag-registry/data/json/registry');
+var index = require('language-subtag-registry/data/json/index.json');
+var registry = require('language-subtag-registry/data/json/registry.json');
 
-var Subtag = require('./Subtag');
+var Subtag = require('./Subtag.js');
 
-module.exports = Tag;
+class Tag {
+	static ERR_DEPRECATED = 1;
+	static ERR_NO_LANGUAGE = 2;
+	static ERR_UNKNOWN = 3;
+	static ERR_TOO_LONG = 4;
+	static ERR_EXTRA_REGION = 5;
+	static ERR_EXTRA_EXTLANG = 6;
+	static ERR_EXTRA_SCRIPT = 7;
+	static ERR_DUPLICATE_VARIANT = 8;
+	static ERR_WRONG_ORDER = 9;
+	static ERR_SUPPRESS_SCRIPT = 10;
+	static ERR_SUBTAG_DEPRECATED = 11;
+	static ERR_EXTRA_LANGUAGE = 12;
 
-Tag.ERR_DEPRECATED = 1;
-Tag.ERR_NO_LANGUAGE = 2;
-Tag.ERR_UNKNOWN = 3;
-Tag.ERR_TOO_LONG = 4;
-Tag.ERR_EXTRA_REGION = 5;
-Tag.ERR_EXTRA_EXTLANG = 6;
-Tag.ERR_EXTRA_SCRIPT = 7;
-Tag.ERR_DUPLICATE_VARIANT = 8;
-Tag.ERR_WRONG_ORDER = 9;
-Tag.ERR_SUPPRESS_SCRIPT = 10;
-Tag.ERR_SUBTAG_DEPRECATED = 11;
-Tag.ERR_EXTRA_LANGUAGE = 12;
+	/** @param {string} tag */
+	constructor (tag) {
+		var types;
 
-function Tag(tag) {
-	var types;
+		// Lowercase for consistency (case is only a formatting convention, not a standard requirement).
+		tag = tag.trim().toLowerCase();
 
-	// Lowercase for consistency (case is only a formatting convention, not a standard requirement).
-	tag = tag.trim().toLowerCase();
+		this.data = { tag };
 
-	this.data = {};
-	this.data.tag = tag;
-
-	// Check if the input tag is grandfathered or redundant.
-	types = index[tag];
-	if (types && (types.grandfathered || types.redundant)) {
-		this.data.record = registry[types.grandfathered || types.redundant];
+		// Check if the input tag is grandfathered or redundant.
+		types = index[tag];
+		if (types && (types.grandfathered || types.redundant)) {
+			this.data.record = registry[types.grandfathered || types.redundant];
+		}
 	}
-}
 
-Tag.prototype.preferred = function() {
-	var preferred = this.data.record['Preferred-Value'];
+	preferred () {
+		var preferred = this.data.record['Preferred-Value'];
 
-	if (preferred) {
-		return new Tag(preferred);
-	}
+		if (preferred) {
+			return new Tag(preferred);
+		}
 
-	return null;
-};
-
-Tag.prototype.subtags = function() {
-	var codes, data = this.data, subtags = [];
-
-	// No subtags if the tag is grandfathered.
-	if (data.record && this.type() === 'grandfathered') {
-		return subtags;
+		return null;
 	}
 
-	codes = data.tag.split('-');
-	if (!codes.length) {
-		return subtags;
-	}
+	/** @return {Subtag[]} */
+	subtags () {
+		var codes, data = this.data, subtags = [];
 
-	// Try and find the language tag.
-	codes.some(function(code, i) {
-		var types;
-
-		// Singletons and anything after are unhandled.
-		if (code.length < 2) {
-			return true; // Stop the loop (stop processing after a singleton).
+		// No subtags if the tag is grandfathered.
+		if (data.record && this.type() === 'grandfathered') {
+			return subtags;
 		}
 
-		types = index[code];
-
-		// Check for non-existent tag.
-		if (!types) {
-			return; // Skip to the next item.
+		codes = data.tag.split('-');
+		if (!codes.length) {
+			return subtags;
 		}
 
-		// Check against undefined because value could be 0.
-		// Language subtags may only appear at the beginning of the tag, otherwise the subtag type is indeterminate.
-		if (0 === i && undefined !== types.language) {
-			subtags.push(new Subtag(code, 'language'));
-			return;
-		}
+		// Try and find the language tag.
+		codes.some(function (code, i) {
+			var types;
 
-		switch (code.length) {
-		case 2:
+			// Singletons and anything after are unhandled.
+			if (code.length < 2) {
+				return true; // Stop the loop (stop processing after a singleton).
+			}
 
-			// Should be a region.
-			if (types.region) {
-				subtags.push(new Subtag(code, 'region'));
+			types = index[code];
 
-			// Error case: language subtag in the wrong place.
-			} else if (types.language) {
-				subtags.push(new Subtag(code, 'language'));
+			// Check for non-existent tag.
+			if (!types) {
+				return; // Skip to the next item.
 			}
 
-			break;
-		case 3:
-
-			// Could be a numeric region code e.g. '001' for 'World'.
-			if (types.region) {
-				subtags.push(new Subtag(code, 'region'));
-			} else if (types.extlang) {
-				subtags.push(new Subtag(code, 'extlang'));
-
-			// Error case: language subtag in the wrong place.
-			} else if (types.language) {
+			// Check against undefined because value could be 0.
+			// Language subtags may only appear at the beginning of the tag, otherwise the subtag type is indeterminate.
+			if (0 === i && undefined !== types.language) {
 				subtags.push(new Subtag(code, 'language'));
+				return;
 			}
 
-			break;
-		case 4:
+			switch (code.length) {
+				case 2:
 
-			// Could be a numeric variant.
-			if (types.variant) {
-				subtags.push(new Subtag(code, 'variant'));
-			} else if (types.script) {
-				subtags.push(new Subtag(code, 'script'));
-			}
+					// Should be a region.
+					if (types.region) {
+						subtags.push(new Subtag(code, 'region'));
 
-			break;
-		default:
+						// Error case: language subtag in the wrong place.
+					} else if (types.language) {
+						subtags.push(new Subtag(code, 'language'));
+					}
 
-			// Should be a variant.
-			if (types.variant) {
-				subtags.push(new Subtag(code, 'variant'));
-			}
+					break;
+				case 3:
 
-			break;
-		}
-	});
+					// Could be a numeric region code e.g. '001' for 'World'.
+					if (types.region) {
+						subtags.push(new Subtag(code, 'region'));
+					} else if (types.extlang) {
+						subtags.push(new Subtag(code, 'extlang'));
 
-	return subtags;
-};
+						// Error case: language subtag in the wrong place.
+					} else if (types.language) {
+						subtags.push(new Subtag(code, 'language'));
+					}
 
-Tag.prototype.language = function() {
-	return this.find('language');
-};
+					break;
+				case 4:
 
-Tag.prototype.region = function() {
-	return this.find('region');
-};
+					// Could be a numeric variant.
+					if (types.variant) {
+						subtags.push(new Subtag(code, 'variant'));
+					} else if (types.script) {
+						subtags.push(new Subtag(code, 'script'));
+					}
 
-Tag.prototype.script = function() {
-	return this.find('script');
-};
+					break;
+				default:
 
-Tag.prototype.find = function(type) {
-	var i, l, subtag, subtags = this.subtags();
+					// Should be a variant.
+					if (types.variant) {
+						subtags.push(new Subtag(code, 'variant'));
+					}
 
-	for (i = 0, l = subtags.length; i < l; i++) {
-		subtag = subtags[i];
+					break;
+			}
+		});
 
-		if (subtag.type() === type) {
-			return subtag;
-		}
+		return subtags;
 	}
-};
 
-Tag.prototype.valid = function() {
-	return this.errors().length < 1;
-};
+	language () {
+		return this.find('language');
+	}
 
-Tag.prototype.errors = function() {
-	var error, subtags, data = this.data, errors = [];
+	region () {
+		return this.find('region');
+	}
 
-	error = function(code, subtag) {
-		var err, message;
+	script () {
+		return this.find('script');
+	}
 
-		switch (code) {
-		case Tag.ERR_DEPRECATED:
-			message = 'The tag \'' + data.tag + '\' is deprecated.';
+	/** @param {string} type */
+	find (type) {
+		var i, l, subtag, subtags = this.subtags();
 
-			// Note that a record that contains a 'Deprecated' field and no corresponding 'Preferred-Value' field has no replacement mapping (RFC 5646 section 3.1.6).
-			if (data.record['Preferred-Value']) {
-				message += ' Use \'' + data.record['Preferred-Value'] + '\' instead.';
-			}
+		for (i = 0, l = subtags.length; i < l; i++) {
+			subtag = subtags[i];
 
-			break;
-		case Tag.ERR_SUBTAG_DEPRECATED:
-			message = 'The subtag \'' + subtag + '\' is deprecated.';
-			break;
-		case Tag.ERR_NO_LANGUAGE:
-			if (!data.tag) {
-				message = 'Empty tag.';
-			} else {
-				message = 'Missing language tag in \'' + data.tag + '\'.';
+			if (subtag.type() === type) {
+				return subtag;
 			}
-
-			break;
-		case Tag.ERR_UNKNOWN:
-			message = 'Unknown code \'' + subtag + '\'';
-			break;
-		case Tag.ERR_TOO_LONG:
-			message = 'The private-use subtag \'' + subtag + '\' is too long.';
-			break;
-		case Tag.ERR_EXTRA_LANGUAGE:
-		case Tag.ERR_EXTRA_EXTLANG:
-		case Tag.ERR_EXTRA_REGION:
-		case Tag.ERR_EXTRA_SCRIPT:
-			message = 'Extra ' + subtag.type() + ' subtag \'' + subtag + '\' found.';
-			break;
-		case Tag.ERR_DUPLICATE_VARIANT:
-			message = 'Duplicate variant subtag \'' + subtag + '\' found.';
-			break;
-		case Tag.ERR_WRONG_ORDER:
-			message = 'The subtag \'' + subtag[0] + '\' should not appear before \'' + subtag[1] + '\'.';
-			break;
-		case Tag.ERR_SUPPRESS_SCRIPT:
-			message = 'The script subtag \'' + subtag + '\' is the same as the language suppress-script.';
-			break;
 		}
+	}
 
-		err = new Error(message);
-		err.code = code;
-		err.tag = data.tag;
-		err.subtag = subtag;
-		errors.push(err);
-	};
+	valid () {
+		return this.errors().length < 1;
+	}
 
-	// Check if the tag is grandfathered and if the grandfathered tag is deprecated (e.g. no-nyn).
-	if (data.record) {
-		if (data.record.Deprecated) {
-			error(Tag.ERR_DEPRECATED);
-		}
+	errors () {
+		var error, subtags, data = this.data, errors = [];
 
-		// Only check every subtag if the tag is not explicitly listed as grandfathered or redundant.
-		return errors;
-	}
+		error = function (code, subtag) {
+			var err, message;
 
-	// Check that all subtag codes are meaningful.
-	data.tag.split('-').some(function(code, i, codes) {
-		var types;
+			switch (code) {
+				case Tag.ERR_DEPRECATED:
+					message = 'The tag \'' + data.tag + '\' is deprecated.';
 
-		// Ignore anything after a singleton.
-		if (code.length < 2) {
+					// Note that a record that contains a 'Deprecated' field and no corresponding 'Preferred-Value' field has no replacement mapping (RFC 5646 section 3.1.6).
+					if (data.record['Preferred-Value']) {
+						message += ' Use \'' + data.record['Preferred-Value'] + '\' instead.';
+					}
 
-			// Check that each private-use subtag is within the maximum allowed length.
-			codes.slice(i).forEach(function(code) {
-				if (code.length > 8) {
-					error(Tag.ERR_TOO_LONG, code);
-				}
-			});
+					break;
+				case Tag.ERR_SUBTAG_DEPRECATED:
+					message = 'The subtag \'' + subtag + '\' is deprecated.';
+					break;
+				case Tag.ERR_NO_LANGUAGE:
+					if (!data.tag) {
+						message = 'Empty tag.';
+					} else {
+						message = 'Missing language tag in \'' + data.tag + '\'.';
+					}
 
-			return true;
-		}
+					break;
+				case Tag.ERR_UNKNOWN:
+					message = 'Unknown code \'' + subtag + '\'';
+					break;
+				case Tag.ERR_TOO_LONG:
+					message = 'The private-use subtag \'' + subtag + '\' is too long.';
+					break;
+				case Tag.ERR_EXTRA_LANGUAGE:
+				case Tag.ERR_EXTRA_EXTLANG:
+				case Tag.ERR_EXTRA_REGION:
+				case Tag.ERR_EXTRA_SCRIPT:
+					message = 'Extra ' + subtag.type() + ' subtag \'' + subtag + '\' found.';
+					break;
+				case Tag.ERR_DUPLICATE_VARIANT:
+					message = 'Duplicate variant subtag \'' + subtag + '\' found.';
+					break;
+				case Tag.ERR_WRONG_ORDER:
+					message = 'The subtag \'' + subtag[0] + '\' should not appear before \'' + subtag[1] + '\'.';
+					break;
+				case Tag.ERR_SUPPRESS_SCRIPT:
+					message = 'The script subtag \'' + subtag + '\' is the same as the language suppress-script.';
+					break;
+			}
 
-		types = index[code];
-		if (!types) {
-			error(Tag.ERR_UNKNOWN, code);
+			err = new Error(message);
+			err.code = code;
+			err.tag = data.tag;
+			err.subtag = subtag;
+			errors.push(err);
+		};
+
+		// Check if the tag is grandfathered and if the grandfathered tag is deprecated (e.g. no-nyn).
+		if (data.record) {
+			if (data.record.Deprecated) {
+				error(Tag.ERR_DEPRECATED);
+			}
+
+			// Only check every subtag if the tag is not explicitly listed as grandfathered or redundant.
+			return errors;
 		}
 
-		return false; // Continue to the next item.
-	});
+		// Check that all subtag codes are meaningful.
+		data.tag.split('-').some(function (code, i, codes) {
+			var types;
 
-	// Check that first tag is a language tag.
-	subtags = this.subtags();
-	if (!subtags.length || 'language' !== subtags[0].type()) {
-		error(Tag.ERR_NO_LANGUAGE);
-		return errors;
-	}
+			// Ignore anything after a singleton.
+			if (code.length < 2) {
 
-	// Check for more than one of some types and for deprecation.
-	subtags.forEach(function(subtag, i) {
-		var type = subtag.type(), language, script, found = this;
+				// Check that each private-use subtag is within the maximum allowed length.
+				codes.slice(i).forEach(function (code) {
+					if (code.length > 8) {
+						error(Tag.ERR_TOO_LONG, code);
+					}
+				});
 
-		if (subtag.deprecated()) {
-			error(Tag.ERR_SUBTAG_DEPRECATED, subtag);
-		}
+				return true;
+			}
 
-		if (found[type]) {
-			found[type].push(subtag);
+			types = index[code];
+			if (!types) {
+				error(Tag.ERR_UNKNOWN, code);
+			}
+
+			return false; // Continue to the next item.
+		});
+
+		// Check that first tag is a language tag.
+		subtags = this.subtags();
+		if (!subtags.length || 'language' !== subtags[0].type()) {
+			error(Tag.ERR_NO_LANGUAGE);
+			return errors;
 		}
 
-		switch (type) {
-		case 'language':
-			if (found.language.length > 1) {
-				error(Tag.ERR_EXTRA_LANGUAGE, subtag);
-			}
+		// Check for more than one of some types and for deprecation.
+		subtags.forEach(function (subtag, i) {
+			var type = subtag.type(), language, script, found = this;
 
-			break;
-		case 'region':
-			if (found.region.length > 1) {
-				error(Tag.ERR_EXTRA_REGION, subtag);
+			if (subtag.deprecated()) {
+				error(Tag.ERR_SUBTAG_DEPRECATED, subtag);
 			}
 
-			break;
-		case 'extlang':
-			if (found.extlang.length > 1) {
-				error(Tag.ERR_EXTRA_EXTLANG, subtag);
+			if (found[type]) {
+				found[type].push(subtag);
 			}
 
-			break;
-		case 'script':
-			if (found.script.length > 1) {
-				error(Tag.ERR_EXTRA_SCRIPT, subtag);
+			switch (type) {
+				case 'language':
+					if (found.language.length > 1) {
+						error(Tag.ERR_EXTRA_LANGUAGE, subtag);
+					}
 
-			// Check if script is same as language suppress-script.
-			} else {
-				language = subtags[0];
-				if ('language' === language.type()) {
-					script = language.script();
-					if (script && script.format() === subtag.format()) {
-						error(Tag.ERR_SUPPRESS_SCRIPT, subtag);
+					break;
+				case 'region':
+					if (found.region.length > 1) {
+						error(Tag.ERR_EXTRA_REGION, subtag);
 					}
-				}
+
+					break;
+				case 'extlang':
+					if (found.extlang.length > 1) {
+						error(Tag.ERR_EXTRA_EXTLANG, subtag);
+					}
+
+					break;
+				case 'script':
+					if (found.script.length > 1) {
+						error(Tag.ERR_EXTRA_SCRIPT, subtag);
+
+						// Check if script is same as language suppress-script.
+					} else {
+						language = subtags[0];
+						if ('language' === language.type()) {
+							script = language.script();
+							if (script && script.format() === subtag.format()) {
+								error(Tag.ERR_SUPPRESS_SCRIPT, subtag);
+							}
+						}
+					}
+
+					break;
+				case 'variant':
+					if (found.variant.length > 1 && found.variant.some(function (variant) {
+						return variant.format() === subtag.format();
+					})) {
+						error(Tag.ERR_DUPLICATE_VARIANT, subtag);
+					}
 			}
+		}, {
+			language: [],
+			extlang: [],
+			variant: [],
+			script: [],
+			region: []
+		});
 
-			break;
-		case 'variant':
-			if (found.variant.length > 1 && found.variant.some(function(variant) {
-				return variant.format() === subtag.format();
-			})) {
-				error(Tag.ERR_DUPLICATE_VARIANT, subtag);
+		// Check for correct order.
+		subtags.forEach(function (subtag, i, subtags) {
+			var priority = this, next = subtags[i + 1];
+
+			if (next && priority[subtag.type()] > priority[next.type()]) {
+				error(Tag.ERR_WRONG_ORDER, [subtag, next]);
 			}
-		}
-	}, {
-		language: [],
-		extlang: [],
-		variant: [],
-		script: [],
-		region: []
-	});
+		}, {
+			language: 4,
+			extlang: 5,
+			script: 6,
+			region: 7,
+			variant: 8
+		});
 
-	// Check for correct order.
-	subtags.forEach(function(subtag, i, subtags) {
-		var priority = this, next = subtags[i + 1];
+		return errors;
+	}
 
-		if (next && priority[subtag.type()] > priority[next.type()]) {
-			error(Tag.ERR_WRONG_ORDER, [subtag, next]);
+	type () {
+		var record = this.data.record;
+
+		if (record) {
+			return record.Type;
 		}
-	}, {
-		language: 4,
-		extlang: 5,
-		script: 6,
-		region: 7,
-		variant: 8
-	});
 
-	return errors;
-};
+		return 'tag';
+	}
 
-Tag.prototype.type = function() {
-	var record = this.data.record;
+	added () {
+		var record = this.data.record;
 
-	if (record) {
-		return record.Type;
+		return record && record.Added;
 	}
 
-	return 'tag';
-};
+	deprecated () {
+		var record = this.data.record;
 
-Tag.prototype.added = function() {
-	var record = this.data.record;
+		return record && record.Deprecated;
+	}
 
-	return record && record.Added;
-};
+	descriptions () {
+		var record = this.data.record;
 
-Tag.prototype.deprecated = function() {
-	var record = this.data.record;
+		if (record && record.Description) {
+			return record.Description;
+		}
 
-	return record && record.Deprecated;
-};
+		return [];
+	}
 
-Tag.prototype.descriptions = function() {
-	var record = this.data.record;
+	format () {
+		var tag = this.data.tag;
 
-	if (record && record.Description) {
-		return record.Description;
-	}
+		// Format according to algorithm defined in RFC 5646 section 2.1.1.
+		return tag.split('-').reduce(function (p, c, i, a) {
+			if (i === 0) {
+				return c;
+			}
 
-	return [];
-};
+			if (a[i - 1].length === 1) {
+				return p + '-' + c;
+			}
 
-Tag.prototype.format = function() {
-	var tag = this.data.tag;
+			switch (c.length) {
+				case 2:
+					return p + '-' + c.toUpperCase();
+				case 4:
+					return p + '-' + c[0].toUpperCase() + c.substr(1);
+			}
 
-	// Format according to algorithm defined in RFC 5646 section 2.1.1.
-	return tag.split('-').reduce(function(p, c, i, a) {
-		if (i === 0) {
-			return c;
-		}
-
-		if (a[i - 1].length === 1) {
 			return p + '-' + c;
-		}
+		});
+	}
+}
 
-		switch (c.length) {
-		case 2:
-			return p + '-' + c.toUpperCase();
-		case 4:
-			return p + '-' + c[0].toUpperCase() + c.substr(1);
-		}
-
-		return p + '-' + c;
-	});
-};
+module.exports = Tag;

package.json

 {
 	"name": "language-tags",
-	"version": "1.0.5",
-	"implements": ["CommonJS/Modules/1.0"],
+	"version": "1.0.6",
+	"implements": [
+		"CommonJS/Modules/1.0"
+	],
 	"description": "Work with IANA language tags.",
 	"main": "lib/index.js",
 	"homepage": "https://github.com/mattcg/language-tags",
-	"author": "Matthew Caruana Galizia <[e-mail]>",
+	"author": "Matthew Caruana Galizia <[e-mail]>",
 	"repository": {
@@ -29,9 +31,12 @@ "type": "git",
 	"dependencies": {
-		"language-subtag-registry": "~0.3.2"
+		"language-subtag-registry": "^0.3.20"
 	},
 	"devDependencies": {
-		"mocha": "~2.3.4",
+		"mocha": "~6.2.0",
 		"istanbul": "~0.4.2",
-		"coveralls": "~2.11.6"
-	}
+		"coveralls": "~3.0.5"
+	},
+	"files": [
+		"/lib"
+	]
 }

README.md

@@ -6,3 +6,3 @@ # IANA Language Tags for JavaScript #
 
-Based on [BCP 47](http://tools.ietf.org/html/bcp47) ([RFC 5646](http://tools.ietf.org/html/rfc5646)) and the latest [IANA language subtag registry](http://www.iana.org/assignments/language-subtag-registry).
+Based on [BCP 47](https://www.rfc-editor.org/info/bcp47) ([RFC 5646](https://www.rfc-editor.org/rfc/rfc5646.html)) and the latest [IANA language subtag registry](http://www.iana.org/assignments/language-subtag-registry).
 
@@ -9,0 +9,0 @@ This project will be updated as the standards change.

.travis.yml

-language: node_js
-node_js:
-  - "4.1"
-  - "4.0"
-  - "0.12"
-  - "0.10"
-branches:
-  only:
-    - master
-script:
-  - "make test"
-  - "make test-coveralls"

Makefile

-test: lib test/lib node_modules
-	TEST_LIB_PATH="../../lib" ./node_modules/.bin/_mocha \
-		--timeout 3000 \
-		--reporter spec \
-		--check-leaks \
-		--ui tdd \
-		--recursive
-
-test-coverage: lib test/lib node_modules
-	TEST_LIB_PATH="../../lib" ./node_modules/.bin/istanbul \
-		cover ./node_modules/.bin/_mocha \
-			-- \
-			--timeout 3000 \
-			--reporter spec \
-			--check-leaks \
-			--ui tdd \
-			--recursive
-
-view-coverage: test-coverage
-	open coverage/lcov-report/index.html
-
-test-coveralls: test-coverage
-	cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
-
-node_modules: package.json
-	npm install
-	touch $@
-
-clean:
-	rm -rf coverage
-
-.PHONY: test test-coverage test-coveralls view-coverage clean

test/lib/index-test.js

-/**
- * @author Matthew Caruana Galizia <[e-mail]>
- * @license MIT: http://mattcg.mit-license.org/
- * @copyright Copyright (c) 2013, Matthew Caruana Galizia
- */
-
-/*jshint node:true*/
-/*global test, suite*/
-
-'use strict';
-
-var assert = require('assert');
-var tags = require(process.env.TEST_LIB_PATH);
-
-suite('tags', function() {
-
-	test('date() returns file date', function() {
-		assert(/\d{4}\-\d{2}\-\d{2}/.test(tags.date()));
-	});
-
-	test('type() returns subtag by type', function() {
-		var subtag;
-
-		subtag = tags.type('Latn', 'script');
-		assert(subtag);
-		assert.equal(subtag.format(), 'Latn');
-		assert.equal(subtag.type(), 'script');
-
-		assert.equal(tags.type('en', 'script'), null);
-	});
-
-	test('region() returns subtag by region', function() {
-		var subtag;
-
-		subtag = tags.region('IQ');
-		assert(subtag);
-		assert.equal(subtag.format(), 'IQ');
-		assert.equal(subtag.type(), 'region');
-
-		assert.equal(tags.region('en'), null);
-	});
-
-	test('language() returns subtag by language', function() {
-		var subtag;
-
-		subtag = tags.language('en');
-		assert(subtag);
-		assert.equal(subtag.format(), 'en');
-		assert.equal(subtag.type(), 'language');
-
-		assert.equal(tags.language('GB'), null);
-	});
-
-	test('languages() returns all languages for macrolanguage', function() {
-		var subtags, err;
-
-		subtags = tags.languages('zh');
-		assert(subtags.length > 0);
-
-		try {
-			assert.equal(tags.languages('en'));
-		} catch (e) {
-			err = e;
-		}
-
-		assert(err);
-		assert.equal(err.message, '\'en\' is not a macrolanguage.');
-	});
-
-	test('search() matches descriptions', function() {
-		var subtags;
-
-		subtags = tags.search('Maltese');
-		assert(subtags.length > 0);
-
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'mt');
-		assert.equal(subtags[1].type(), 'language');
-		assert.equal(subtags[1].format(), 'mdl');
-		assert.equal(subtags[2].type(), 'extlang');
-		assert.equal(subtags[2].format(), 'mdl');
-
-		subtags = tags.search('Gibberish');
-		assert.deepEqual(subtags, []);
-	});
-
-	test('search() puts exact match at the top', function() {
-		var subtags;
-
-		subtags = tags.search('Dari');
-		assert(subtags.length > 0);
-
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'prs');
-	});
-
-	test('subtags() returns subtags', function() {
-		var subtags;
-
-		subtags = tags.subtags('whatever');
-		assert.deepEqual(subtags, []);
-
-		subtags = tags.subtags('mt');
-		assert.equal(subtags.length, 2);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'mt');
-		assert.equal(subtags[1].type(), 'region');
-		assert.equal(subtags[1].format(), 'MT');
-	});
-
-	test('check() checks tag validity', function() {
-		assert(tags.check('en'));
-		assert(!tags.check('mo'));
-	});
-
-	test('gets tag', function() {
-		var tag;
-
-		tag = tags('en');
-		assert(tag);
-
-		tag = tags('en-gb');
-		assert(tag);
-		assert.equal(tag.format(), 'en-GB');
-	});
-});

test/lib/SubtagTest.js

-/**
- * @author Matthew Caruana Galizia <[e-mail]>
- * @license MIT: http://mattcg.mit-license.org/
- * @copyright Copyright (c) 2013, Matthew Caruana Galizia
- */
-
-/*jshint node:true*/
-/*global test, suite*/
-
-'use strict';
-
-var assert = require('assert');
-var Subtag = require(process.env.TEST_LIB_PATH + '/Subtag');
-
-suite('Subtag', function() {
-
-	test('subtag.type() returns type', function() {
-		assert.equal(new Subtag('zh', 'language').type(), 'language');
-		assert.equal(new Subtag('IQ', 'region').type(), 'region');
-	});
-
-	test('subtag.descriptions() returns descriptions', function() {
-		assert.deepEqual(new Subtag('IQ', 'region').descriptions(), ['Iraq']);
-		assert.deepEqual(new Subtag('vsv', 'extlang').descriptions(), ['Valencian Sign Language', 'Llengua de signes valenciana']);
-	});
-
-	test('subtag.preferred() returns preferred subtag', function() {
-		var subtag, preferred;
-
-		// Extlang
-		subtag = new Subtag('vsv', 'extlang');
-		preferred = subtag.preferred();
-		assert(preferred);
-		assert.equal(preferred.type(), 'language');
-		assert.equal(preferred.format(), 'vsv');
-
-		// Language
-		// Moldovan -> Romanian
-		subtag = new Subtag('mo', 'language');
-		preferred = subtag.preferred();
-		assert(preferred);
-		assert.equal(preferred.type(), 'language');
-		assert.equal(preferred.format(), 'ro');
-
-		// Region
-		// Burma -> Myanmar
-		subtag = new Subtag('BU', 'region');
-		preferred = subtag.preferred();
-		assert(preferred);
-		assert.equal(preferred.type(), 'region');
-		assert.equal(preferred.format(), 'MM');
-
-		// Variant
-		subtag = new Subtag('heploc', 'variant');
-		preferred = subtag.preferred();
-		assert(preferred);
-		assert.equal(preferred.type(), 'variant');
-		assert.equal(preferred.format(), 'alalc97');
-
-		// Should return null if no preferred value.
-		// Latin America and the Caribbean
-		subtag = new Subtag('419', 'region');
-		assert.equal(subtag.preferred(), null);
-	});
-
-	test('subtag.script() returns suppress-script as subtag', function() {
-		var subtag, script;
-
-		subtag = new Subtag('en', 'language');
-		script = subtag.script();
-		assert(script);
-		assert.equal(script.type(), 'script');
-		assert.equal(script.format(), 'Latn');
-
-		// Should return null if no script.
-		// A macrolanguage like 'zh' should have no suppress-script.
-		subtag = new Subtag('zh', 'language');
-		script = subtag.script();
-		assert.equal(script, null);
-	});
-
-	test('subtag.scope() returns scope', function() {
-		assert.equal(new Subtag('zh', 'language').scope(), 'macrolanguage');
-		assert.equal(new Subtag('nah', 'language').scope(), 'collection');
-		assert.equal(new Subtag('en', 'language').scope(), null);
-		assert.equal(new Subtag('IQ', 'region').scope(), null);
-	});
-
-	test('subtag.deprecated() returns deprecation date if available', function() {
-
-		// German Democratic Republic
-		assert.equal(new Subtag('DD', 'region').deprecated(), '1990-10-30');
-		assert.equal(new Subtag('DE', 'region').deprecated(), null);
-	});
-
-	test('subtag.added() returns date added', function() {
-		assert.equal(new Subtag('DD', 'region').added(), '2005-10-16');
-		assert.equal(new Subtag('DG', 'region').added(), '2009-07-29');
-	});
-
-	test('subtag.comments() returns comments', function() {
-
-		// Yugoslavia
-		assert.deepEqual(new Subtag('YU', 'region').comments(), ['see BA, HR, ME, MK, RS, or SI']);
-	});
-
-	test('subtag.format() formats subtag according to conventions', function() {
-
-		// Language
-		assert.equal(new Subtag('en', 'language').format(), 'en');
-		assert.equal(new Subtag('EN', 'language').format(), 'en');
-
-		// Region
-		assert.equal(new Subtag('GB', 'region').format(), 'GB');
-		assert.equal(new Subtag('gb', 'region').format(), 'GB');
-
-		// Script
-		assert.equal(new Subtag('Latn', 'script').format(), 'Latn');
-		assert.equal(new Subtag('latn', 'script').format(), 'Latn');
-	});
-});

test/lib/TagTest.js

-/**
- * @author Matthew Caruana Galizia <[e-mail]>
- * @license MIT: http://mattcg.mit-license.org/
- * @copyright Copyright (c) 2013, Matthew Caruana Galizia
- */
-
-/*jshint node:true*/
-/*global test, suite*/
-
-'use strict';
-
-var assert = require('assert');
-var Tag = require(process.env.TEST_LIB_PATH + '/Tag');
-
-suite('Tag', function() {
-
-	test('tag.type() returns \'grandfathered\'', function() {
-
-		// Classified as grandfathered in the registry.
-		assert.equal(new Tag('en-GB-oed').type(), 'grandfathered');
-	});
-
-	test('tag.type() returns \'redundant\'', function() {
-
-		// Classified as redundant in the registry.
-		assert.equal(new Tag('az-Arab').type(), 'redundant');
-		assert.equal(new Tag('uz-Cyrl').type(), 'redundant');
-		assert.equal(new Tag('zh-cmn-Hant').type(), 'redundant');
-	});
-
-	test('tag.type() returns \'tag\'', function() {
-
-		// Maltese (mt) is a subtag but valid as a standalone tag.
-		assert.equal(new Tag('mt').type(), 'tag');
-	});
-
-	test('tag.subtags() returns subtags with correct type', function() {
-		var tag, subtags;
-
-		tag = new Tag('en');
-		subtags = tag.subtags();
-		assert.equal(subtags.length, 1);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'en');
-
-		// Lowercase - lookup should be case insensitive.
-		tag = new Tag('en-mt');
-		subtags = tag.subtags();
-		assert.equal(subtags.length, 2);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'en');
-		assert.equal(subtags[1].type(), 'region');
-		assert.equal(subtags[1].format(), 'MT');
-
-		tag = new Tag('en-mt-arab');
-		subtags = tag.subtags();
-		assert.equal(subtags.length, 3);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'en');
-		assert.equal(subtags[1].type(), 'region');
-		assert.equal(subtags[1].format(), 'MT');
-		assert.equal(subtags[2].type(), 'script');
-		assert.equal(subtags[2].format(), 'Arab');
-	});
-
-	test('tag.subtags() returns only existent subtags', function() {
-		var tag, subtags;
-
-		tag = new Tag('hello');
-		assert.deepEqual(tag.subtags(), []);
-
-		tag = new Tag('en-hello');
-		subtags = tag.subtags();
-		assert.equal(subtags.length, 1);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'en');
-	});
-
-	test('tag.subtags() handles private tags', function() {
-		var tag, subtags;
-
-		tag = new Tag('en-GB-x-Beano');
-		subtags = tag.subtags();
-		assert.equal(subtags.length, 2);
-		assert.equal(subtags[0].type(), 'language');
-		assert.equal(subtags[0].format(), 'en');
-		assert.equal(subtags[1].type(), 'region');
-		assert.equal(subtags[1].format(), 'GB');
-	});
-
-	test('tag.subtags() returns empty array for grandfathered tag', function() {
-		var tag, subtags;
-
-		tag = new Tag('en-GB-oed');
-		assert.equal(tag.type(), 'grandfathered');
-		subtags = tag.subtags();
-		assert.deepEqual(subtags, []);
-		assert.equal(undefined, tag.region());
-		assert.equal(undefined, tag.language());
-	});
-
-	test('tag.subtags() returns array for redundant tag', function() {
-		var tag, subtags;
-
-		tag = new Tag('az-Arab');
-		assert.equal(tag.type(), 'redundant');
-		subtags = tag.subtags();
-		assert.equal(2, subtags.length);
-		assert.equal(subtags[0].format(), 'az');
-		assert.equal(subtags[1].format(), 'Arab');
-	});
-
-	test('tag.errors() returns error for deprecated grandfathered tag', function() {
-		var tag, errs, err;
-
-		// Grandfathered and deprecated, therefore invalid.
-		tag = new Tag('art-lojban');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(tag.deprecated());
-		errs = tag.errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_DEPRECATED);
-		assert.equal(err.tag, 'art-lojban');
-	});
-
-	test('tag.errors() returns error for deprecated redundant tag', function() {
-		var tag, errs, err;
-
-		// Redundant and deprecated, therefore invalid.
-		tag = new Tag('zh-cmn');
-		assert.equal(tag.type(), 'redundant');
-		assert(tag.deprecated());
-		errs = tag.errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_DEPRECATED);
-		assert.equal(err.tag, 'zh-cmn');
-	});
-
-	test('tag.errors() returns error if contains deprecated subtags', function() {
-		var errs, err;
-
-		// Moldovan (mo) is deprecated as a language.
-		errs = new Tag('mo').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_SUBTAG_DEPRECATED);
-		assert.equal(err.message, 'The subtag \'mo\' is deprecated.');
-
-		// Neutral Zone (NT) is deprecated as a region.
-		errs = new Tag('en-NT').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_SUBTAG_DEPRECATED);
-		assert.equal(err.message, 'The subtag \'NT\' is deprecated.');
-	});
-
-	test('tag.errors() returns empty array for valid tag', function() {
-		assert.equal(new Tag('en').errors().length, 0);
-	});
-
-	test('tag.errors() returns error if no language tag and not grandfathered or redundant', function() {
-		var errs, err;
-
-		// Test with empty tag.
-		errs = new Tag('').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_NO_LANGUAGE);
-		assert.equal(err.message, 'Empty tag.');
-
-		errs = new Tag('IQ-Arab').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_NO_LANGUAGE);
-		assert.equal(err.message, 'Missing language tag in \'iq-arab\'.');
-
-		errs = new Tag('419').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_NO_LANGUAGE);
-		assert.equal(err.message, 'Missing language tag in \'419\'.');
-	});
-
-	test('tag.errors() returns error if language subtag not at front of tag', function() {
-		var errs, err;
-
-		errs = new Tag('GB-en').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_NO_LANGUAGE);
-		assert.equal(err.message, 'Missing language tag in \'gb-en\'.');
-	});
-
-	test('tag.errors() returns error if more than one language subtag appears', function() {
-		var errs, err;
-
-		errs = new Tag('en-en').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_LANGUAGE);
-		assert.equal(err.message, 'Extra language subtag \'en\' found.');
-
-		errs = new Tag('en-en-GB').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_LANGUAGE);
-		assert.equal(err.message, 'Extra language subtag \'en\' found.');
-
-		errs = new Tag('ko-en').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_LANGUAGE);
-		assert.equal(err.message, 'Extra language subtag \'en\' found.');
-	});
-
-	test('tag.errors() returns error if more than one region subtag appears', function() {
-		var errs, err;
-
-		errs = new Tag('en-GB-GB').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_REGION);
-		assert.equal(err.message, 'Extra region subtag \'GB\' found.');
-
-		errs = new Tag('ko-mt-mt').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_REGION);
-		assert.equal(err.message, 'Extra region subtag \'MT\' found.');
-	});
-
-	test('tag.errors() returns error if more than one script subtag appears', function() {
-		var errs, err;
-
-		errs = new Tag('mt-Arab-Arab').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_SCRIPT);
-		assert.equal(err.message, 'Extra script subtag \'Arab\' found.');
-
-		errs = new Tag('en-Cyrl-Latn').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_SCRIPT);
-		assert.equal(err.message, 'Extra script subtag \'Latn\' found.');
-
-		// First error should be regarding suppress-script, second should be regarding extra script.
-		errs = new Tag('en-Latn-Cyrl').errors();
-		assert.equal(errs.length, 2);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_SUPPRESS_SCRIPT);
-		assert.equal(err.message, 'The script subtag \'Latn\' is the same as the language suppress-script.');
-		err = errs[1];
-		assert.equal(err.code, Tag.ERR_EXTRA_SCRIPT);
-		assert.equal(err.message, 'Extra script subtag \'Cyrl\' found.');
-	},
-
-	'tag.errors() returns error if more than one extlang subtag appears', function() {
-		var errs, err;
-
-		errs = new Tag('en-asp-bog').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_EXTRA_EXTLANG);
-		assert.equal(err.message, 'Extra extlang subtag \'bog\' found.');
-	});
-
-	test('tag.errors() returns error if a duplicate variant subtag appears', function() {
-		var errs, err;
-
-		errs = new Tag('ca-valencia-valencia').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_DUPLICATE_VARIANT);
-		assert.equal(err.message, 'Duplicate variant subtag \'valencia\' found.');
-	});
-
-	test('tag.errors() returns error if private-use subtag contains more than 8 characters', function() {
-		var errs, err;
-
-		// i.e. more than 8 in each component, not in total.
-		errs = new Tag('en-x-more-than-eight-chars').errors();
-		assert.equal(errs.length, 0);
-
-		errs = new Tag('en-x-morethaneightchars').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_TOO_LONG);
-		assert.equal(err.message, 'The private-use subtag \'morethaneightchars\' is too long.');
-	});
-
-	test('tag.errors() returns error if script subtag is same as language suppress-script', function() {
-		var errs, err;
-
-		errs = new Tag('gsw-Latn').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_SUPPRESS_SCRIPT);
-		assert.equal(err.message, 'The script subtag \'Latn\' is the same as the language suppress-script.');
-
-		errs = new Tag('en-Latn-GB').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_SUPPRESS_SCRIPT);
-		assert.equal(err.message, 'The script subtag \'Latn\' is the same as the language suppress-script.');
-	});
-
-	test('tag.errors() returns error if subtags are in wrong order', function() {
-		var errs, err;
-
-		errs = new Tag('mt-MT-Arab').errors();
-		assert.equal(errs.length, 1);
-		err = errs[0];
-		assert.equal(err.code, Tag.ERR_WRONG_ORDER);
-		assert.equal(err.message, 'The subtag \'MT\' should not appear before \'Arab\'.');
-	});
-
-	test('tag.valid() returns true for valid tag', function() {
-		assert(new Tag('en').valid());
-		assert(new Tag('en-GB').valid());
-		assert(new Tag('gsw').valid());
-		assert(new Tag('de-CH').valid());
-	});
-
-	test('tag.valid() returns true for subtag followed by private tag', function() {
-		assert(new Tag('en-x-whatever').valid());
-	});
-
-	test('tag.valid() returns true for non-deprecated grandfathered tag', function() {
-		var tag;
-
-		// Grandfathered but not deprecated, therefore valid.
-		tag = new Tag('i-default');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(!tag.deprecated());
-		assert(tag.valid());
-	});
-
-	test('tag.valid() returns true for non-deprecated redundant tag', function() {
-		var tag;
-
-		// Redundant but not deprecated, therefore valid.
-		tag = new Tag('zh-Hans');
-		assert.equal(tag.type(), 'redundant');
-		assert(!tag.deprecated());
-		assert(tag.valid());
-		tag = new Tag('es-419');
-		assert.equal(tag.type(), 'redundant');
-		assert(!tag.deprecated());
-		assert(tag.valid());
-	});
-
-	test('tag.valid() returns false for non-existent tag', function() {
-		assert(!new Tag('zzz').valid());
-		assert(!new Tag('zzz-Latn').valid());
-		assert(!new Tag('en-Lzzz').valid());
-	});
-
-	test('tag.valid() returns false for deprecated grandfathered tag', function() {
-		var tag;
-
-		// Grandfathered and deprecated, therefore invalid.
-		tag = new Tag('art-lojban');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(tag.deprecated());
-		assert(!tag.valid());
-	});
-
-	test('tag.valid() returns false for deprecated redundant tag', function() {
-		var tag;
-
-		// Redundant and deprecated, therefore invalid.
-		tag = new Tag('zh-cmn');
-		assert.equal(tag.type(), 'redundant');
-		assert(tag.deprecated());
-		assert(!tag.valid());
-		tag = new Tag('zh-cmn-Hans');
-		assert.equal(tag.type(), 'redundant');
-		assert(tag.deprecated());
-		assert(!tag.valid());
-	});
-
-	test('tag.valid() returns false if contains deprecated subtags', function() {
-
-		// Moldovan (mo) is deprecated as a language.
-		assert(!new Tag('mo').valid());
-
-		// Neutral Zone (NT) is deprecated as a region.
-		assert(!new Tag('en-NT').valid());
-	});
-
-	test('tag.valid() returns false for tag with redundant script subtag', function() {
-
-		// Swiss German (gsw) has a suppress script of Latn.
-		assert(!new Tag('gsw-Latn').valid());
-	});
-
-	test('tag.valid() returns false if tag contains no language tag and is not grandfathered or redundant', function() {
-		assert(!new Tag('IQ-Arab').valid());
-		assert(!new Tag('419').valid());
-	});
-
-	test('tag.valid() returns false if language subtag is not front of tag', function() {
-		assert(!new Tag('GB-en').valid());
-	});
-
-	test('tag.valid() returns false if more than one language subtag appears', function() {
-		assert(!new Tag('en-en').valid());
-		assert(!new Tag('ko-en').valid());
-	});
-
-	test('tag.valid() returns false if more than one region subtag appears', function() {
-		assert(!new Tag('en-001-gb').valid());
-		assert(!new Tag('gb-001').valid());
-	});
-
-	test('tag.valid() returns false if more than one extlang subtag appears', function() {
-		assert(!new Tag('en-asp-bog').valid());
-	});
-
-	test('tag.valid() returns false if more than one script subtag appears', function() {
-		assert(!new Tag('arb-Latn-Cyrl').valid());
-	});
-
-	test('tag.valid() returns false if a duplicate variant subtag appears', function() {
-		assert(!new Tag('ca-valencia-valencia').valid());
-	});
-
-	test('tag.valid() returns false if private-use subtag contains more than 8 characters', function() {
-
-		// i.e. more than 8 in each component, not in total.
-		assert(new Tag('en-x-more-than-eight-chars').valid());
-		assert(!new Tag('en-x-morethaneightchars').valid());
-	});
-
-	test('tag.valid() returns false if script subtag is same as language suppress-script', function() {
-		assert(!new Tag('en-Latn').valid());
-		assert(!new Tag('en-GB-Latn').valid());
-		assert(!new Tag('gsw-Latn').valid());
-	});
-
-	test('tag.deprecated() returns deprecation date when available', function() {
-		var tag;
-
-		// Redundant and deprecated.
-		tag = new Tag('zh-cmn-Hant');
-		assert.equal(tag.type(), 'redundant');
-		assert.equal(tag.deprecated(), '2009-07-29');
-
-		// Redundant but not deprecated.
-		tag = new Tag('zh-Hans');
-		assert.equal(tag.type(), 'redundant');
-		assert(!tag.deprecated());
-
-		// Grandfathered and deprecated.
-		tag = new Tag('zh-xiang');
-		assert.equal(tag.type(), 'grandfathered');
-		assert.equal(tag.deprecated(), '2009-07-29');
-
-		// Grandfathered but not deprecated.
-		tag = new Tag('i-default');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(!tag.deprecated());
-	});
-
-	test('tag.added() returns add date when available', function() {
-		var tag;
-
-		// Redundant and deprecated.
-		tag = new Tag('zh-cmn-Hant');
-		assert.equal(tag.type(), 'redundant');
-		assert.equal(tag.added(), '2005-07-15');
-
-		// Redundant but not deprecated.
-		tag = new Tag('zh-Hans');
-		assert.equal(tag.type(), 'redundant');
-		assert(!tag.deprecated());
-		assert.equal(tag.added(), '2003-05-30');
-
-		// Grandfathered and deprecated.
-		tag = new Tag('zh-xiang');
-		assert.equal(tag.type(), 'grandfathered');
-		assert.equal(tag.added(), '1999-12-18');
-
-		// Grandfathered but not deprecated.
-		tag = new Tag('i-default');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(!tag.deprecated());
-		assert.equal(tag.added(), '1998-03-10');
-	});
-
-	test('tag.descriptions() returns descriptions when available', function() {
-		var tag;
-
-		tag = new Tag('i-default');
-		assert.equal(tag.type(), 'grandfathered');
-		assert(!tag.deprecated());
-		assert.deepEqual(tag.descriptions(), ['Default Language']);
-
-		// Otherwise returns an empty array.
-		assert.deepEqual(new Tag('en').descriptions(), []);
-	});
-
-	test('tag.format() formats tag according to conventions', function() {
-		assert.equal(new Tag('en').format(), 'en');
-		assert.equal(new Tag('En').format(), 'en');
-		assert.equal(new Tag('EN').format(), 'en');
-		assert.equal(new Tag('eN').format(), 'en');
-		assert.equal(new Tag('en-gb').format(), 'en-GB');
-		assert.equal(new Tag('en-gb-oed').format(), 'en-GB-oed');
-		assert.equal(new Tag('az-latn').format(), 'az-Latn');
-		assert.equal(new Tag('ZH-hant-hK').format(), 'zh-Hant-HK');
-	});
-
-	test('tag.preferred() returns preferred tag if available', function() {
-		var tag = new Tag('zh-cmn-Hant');
-
-		assert.equal(tag.type(), 'redundant');
-		assert(tag.deprecated());
-		assert(tag.preferred());
-		assert.equal(tag.preferred().format(), 'cmn-Hant');
-
-		assert.equal(new Tag('zh-Hans').preferred(), null);
-	});
-
-	test('tag.region() and tag.language() return subtags for redundant tags', function() {
-		var tag;
-
-		tag = new Tag('es-419');
-		assert.deepEqual(tag.region().descriptions(), ['Latin America and the Caribbean']);
-		assert.deepEqual(tag.language().descriptions(), ['Spanish', 'Castilian']);
-
-		tag = new Tag('sgn-NL');
-		assert.deepEqual(tag.region().descriptions(), ['Netherlands']);
-		assert.deepEqual(tag.language().descriptions(), ['Sign languages']);
-	});
-});

Fixed alerts

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 1 instance in 1 package

Improved metrics

Number of low supply chain risk alerts

0

-100%

Worsened metrics

Total package byte prevSize

24182

-50.48%

Number of package files

5

-54.55%

Lines of code

531

-53.71%

Dependency changes

• Updated

  language-subtag-registry@^0.3.20