add hw2

node_modules/@iconify/utils/lib/emoji/parse.js

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+import { getEmojiSequenceFromString, getUnqualifiedEmojiSequence } from "./cleanup.js";
+import { getEmojiSequenceKeyword } from "./format.js";
+import { parseEmojiTestFile } from "./test/parse.js";
+import { getQualifiedEmojiVariations } from "./test/variations.js";
+import { findMissingEmojis } from "./test/missing.js";
+import { createOptimisedRegexForEmojiSequences } from "./regex/create.js";
+import { combineSimilarEmojiTestData } from "./test/similar.js";
+import { getEmojiTestDataTree } from "./test/tree.js";
+
+/**
+* Prepare emoji for icons list
+*
+* Test data should be fetched from 'https://unicode.org/Public/emoji/17.0/emoji-test.txt'
+* It is used to detect missing emojis and optimise regular expression
+*/
+function prepareEmojiForIconsList(icons, rawTestData) {
+	const testData = rawTestData ? parseEmojiTestFile(rawTestData) : void 0;
+	let iconsList = [];
+	for (const char in icons) {
+		const sequence = getEmojiSequenceFromString(char);
+		iconsList.push({
+			icon: icons[char],
+			sequence
+		});
+	}
+	iconsList = getQualifiedEmojiVariations(iconsList);
+	if (testData) iconsList = iconsList.concat(findMissingEmojis(iconsList, getEmojiTestDataTree(combineSimilarEmojiTestData(testData))));
+	const preparedIcons = iconsList.map((item) => {
+		const sequence = getEmojiSequenceKeyword(getUnqualifiedEmojiSequence(item.sequence));
+		return {
+			icon: item.icon,
+			sequence
+		};
+	});
+	const regex = createOptimisedRegexForEmojiSequences(iconsList.map((item) => item.sequence));
+	return {
+		regex,
+		icons: preparedIcons
+	};
+}
+/**
+* Prepare emoji for an icon set
+*
+* Test data should be fetched from 'https://unicode.org/Public/emoji/15.1/emoji-test.txt'
+* It is used to detect missing emojis and optimise regular expression
+*/
+function prepareEmojiForIconSet(iconSet, rawTestData) {
+	return prepareEmojiForIconsList(iconSet.chars || {}, rawTestData);
+}
+
+export { prepareEmojiForIconSet, prepareEmojiForIconsList };