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lib/util/chalk/utilities.ts

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+// 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.substr(endIndex, index - endIndex) + 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.substr(endIndex, (gotCR ? index - 1 : index) - endIndex) +
+      prefix +
+      (gotCR ? '\r\n' : '\n') +
+      postfix;
+    endIndex = index + 1;
+    index = string.indexOf('\n', endIndex);
+  } while (index !== -1);
+
+  returnValue += string.slice(endIndex);
+  return returnValue;
+}