add hw2

node_modules/chalk/source/utilities.js

@@ -0,0 +1,33 @@
+// TODO: When targeting Node.js 16, use `String.prototype.replaceAll`.
+export function stringReplaceAll(string, substring, replacer) {
+	let index = string.indexOf(substring);
+	if (index === -1) {
+		return string;
+	}
+
+	const substringLength = substring.length;
+	let endIndex = 0;
+	let returnValue = '';
+	do {
+		returnValue += string.slice(endIndex, index) + substring + replacer;
+		endIndex = index + substringLength;
+		index = string.indexOf(substring, endIndex);
+	} while (index !== -1);
+
+	returnValue += string.slice(endIndex);
+	return returnValue;
+}
+
+export function stringEncaseCRLFWithFirstIndex(string, prefix, postfix, index) {
+	let endIndex = 0;
+	let returnValue = '';
+	do {
+		const gotCR = string[index - 1] === '\r';
+		returnValue += string.slice(endIndex, (gotCR ? index - 1 : index)) + prefix + (gotCR ? '\r\n' : '\n') + postfix;
+		endIndex = index + 1;
+		index = string.indexOf('\n', endIndex);
+	} while (index !== -1);
+
+	returnValue += string.slice(endIndex);
+	return returnValue;
+}