First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/@iconify/utils/lib/emoji/cleanup.js

@@ -0,0 +1,78 @@
+import { joinerEmoji, vs16Emoji } from "./data.js";
+import { getEmojiCodePoint } from "./convert.js";
+/**
+* Get emoji sequence from string
+*
+* @example
+* // shows same emoji sequence formatted differently
+* - '1F441 FE0F 200D 1F5E8 FE0F' => [0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]
+* - '1f441-fe0f-200d-1f5e8-fe0f' => [0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]
+* - '\\uD83D\\uDC41\\uFE0F\\u200D\\uD83D\\uDDE8\\uFE0F' => [0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]
+*/
+function getEmojiSequenceFromString(value) {
+	return value.trim().split(/[^0-9A-F]+/i).filter((item) => item.length > 0).map(getEmojiCodePoint);
+}
+/**
+* Convert emoji sequence or keyword
+*
+* If sequence is characters list, like '1f441-fe0f', it will be converted to [0x1f441, 0xfe0f]
+* If sequence contains anything other than [0-9A-F-\s], it will be converted character by character
+*
+* This is used to treat keywords, like ':cat:' differently when converting strings to sequences
+*/
+function getSequenceFromEmojiStringOrKeyword(value) {
+	if (!value.match(/^[0-9a-fA-F-\s]+$/)) {
+		const results = [];
+		for (const codePoint of value) {
+			const code = codePoint.codePointAt(0);
+			if (code) results.push(code);
+			else return getEmojiSequenceFromString(value);
+		}
+		return results;
+	}
+	return getEmojiSequenceFromString(value);
+}
+/**
+* Split emoji sequence by joiner
+*
+* Result represents one emoji, split in smaller sequences separated by 0x200D
+*
+* @example
+* [0x1FAF1, 0x1F3FB, 0x200D, 0x1FAF2, 0x1F3FC] => [[0x1FAF1, 0x1F3FB], [0x1FAF2, 0x1F3FC]]
+*/
+function splitEmojiSequences(sequence, separator = joinerEmoji) {
+	const results = [];
+	let queue = [];
+	for (let i = 0; i < sequence.length; i++) {
+		const code = sequence[i];
+		if (code === separator) {
+			results.push(queue);
+			queue = [];
+		} else queue.push(code);
+	}
+	results.push(queue);
+	return results;
+}
+/**
+* Join emoji sequences
+*
+* Parameter represents one emoji, split in smaller sequences
+*
+* @example
+* [[0x1FAF1, 0x1F3FB], [0x1FAF2, 0x1F3FC]] => [0x1FAF1, 0x1F3FB, 0x200D, 0x1FAF2, 0x1F3FC]
+*/
+function joinEmojiSequences(sequences, separator = joinerEmoji) {
+	let results = [];
+	for (let i = 0; i < sequences.length; i++) {
+		if (i > 0) results.push(separator);
+		results = results.concat(sequences[i]);
+	}
+	return results;
+}
+/**
+* Get unqualified sequence
+*/
+function getUnqualifiedEmojiSequence(sequence) {
+	return sequence.filter((num) => num !== vs16Emoji);
+}
+export { getEmojiSequenceFromString, getSequenceFromEmojiStringOrKeyword, getUnqualifiedEmojiSequence, joinEmojiSequences, splitEmojiSequences };