To perform a global replacement you have to use Regex: Js ref

var str = "Mr Blue has a blue house and a blue car";
var res = str.replace(/blue/gi, "red");

But yes, the IntelliSense doc is confusing.

Either correct the IntelliSense doc or fix the replace function.

Only correcting the documentation is a viable option. TypeScript does not provide the string.replace function, it's part of the JavaScript engine.

Created a PR with updated documentation.

-     * @param replaceValue A string containing the text to replace for every successful match of searchValue in this string.
+     * @param replaceValue A string containing the text to replace the first successful match of searchValue in this string.

If you use a regex for replacing all occurrences, then "text to replace the first successful match of searchValue in this string" will also become confusing. I suggest that the doc clearly convey 2 options for the replaceValue param:

1. "first successful match" in case only string in search value.
2. "all successful matches" in case regex used as search value.

* @param replaceValue A string containing either the first successful match of searchValue in case using a string in search value or all successful matches in case regex used. ?

More like:
A string containing the text to replace for successful matches of the searchValue in this string (replaces either first successful match of searchValue in case of using a string or every successful match in case a regex is used)

Might also use "first occurrence" in place of "first successful match".

Updated it accordingly.

I changed it to below after comments from @sandersn on PR page

* @param replaceValue A string or function to be called for some or all matches containing the text to replace from successful matches of string or RegExp searchValue. If pattern is a string, only the first occurrence is replaced.