update

package/lib/utils/format.js

@@ -0,0 +1,50 @@
+const { formatWithOptions: baseFormatWithOptions } = require('node:util')
+
+// These are most assuredly not a mistake
+// https://eslint.org/docs/latest/rules/no-control-regex
+// \x00 through \x1f, \x7f through \x9f, not including \x09 \x0a \x0b \x0d
+/* eslint-disable-next-line no-control-regex */
+const HAS_C01 = /[\x00-\x08\x0c\x0e-\x1f\x7f-\x9f]/
+
+// Allows everything up to '[38;5;255m' in 8 bit notation
+const ALLOWED_SGR = /^\[[0-9;]{0,8}m/
+
+// '[38;5;255m'.length
+const SGR_MAX_LEN = 10
+
+// Strips all ANSI C0 and C1 control characters (except for SGR up to 8 bit)
+function STRIP_C01 (str) {
+  if (!HAS_C01.test(str)) {
+    return str
+  }
+  let result = ''
+  for (let i = 0; i < str.length; i++) {
+    const char = str[i]
+    const code = char.charCodeAt(0)
+    if (!HAS_C01.test(char)) {
+      // Most characters are in this set so continue early if we can
+      result = `${result}${char}`
+    } else if (code === 27 && ALLOWED_SGR.test(str.slice(i + 1, i + SGR_MAX_LEN + 1))) {
+      // \x1b with allowed SGR
+      result = `${result}\x1b`
+    } else if (code <= 31) {
+      // escape all other C0 control characters besides \x7f
+      result = `${result}^${String.fromCharCode(code + 64)}`
+    } else {
+      // hasC01 ensures this is now a C1 control character or \x7f
+      result = `${result}^${String.fromCharCode(code - 64)}`
+    }
+  }
+  return result
+}
+
+const formatWithOptions = ({ prefix: prefixes = [], eol = '\n', ...options }, ...args) => {
+  const prefix = prefixes.filter(p => p != null).join(' ')
+  const formatted = STRIP_C01(baseFormatWithOptions(options, ...args))
+  // Splitting could be changed to only `\n` once we are sure we only emit unix newlines.
+  // The eol param to this function will put the correct newlines in place for the returned string.
+  const lines = formatted.split(/\r?\n/)
+  return lines.reduce((acc, l) => `${acc}${prefix}${prefix && l ? ' ' : ''}${l}${eol}`, '')
+}
+
+module.exports = { formatWithOptions }