add hw2

node_modules/ansi-regex/index.js

@@ -0,0 +1,14 @@
+export default function ansiRegex({onlyFirst = false} = {}) {
+	// Valid string terminator sequences are BEL, ESC\, and 0x9c
+	const ST = '(?:\\u0007|\\u001B\\u005C|\\u009C)';
+
+	// OSC sequences only: ESC ] ... ST (non-greedy until the first ST)
+	const osc = `(?:\\u001B\\][\\s\\S]*?${ST})`;
+
+	// CSI and related: ESC/C1, optional intermediates, optional params (supports ; and :) then final byte
+	const csi = '[\\u001B\\u009B][[\\]()#;?]*(?:\\d{1,4}(?:[;:]\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]';
+
+	const pattern = `${osc}|${csi}`;
+
+	return new RegExp(pattern, onlyFirst ? undefined : 'g');
+}