https://bugzilla.mozilla.org/show_bug.cgi?id=1618187
1618187 - [wpt-sync] Sync PR 21987 - Convert string to binary to be able to concatenate with...
RESOLVED (wptsync) in Core - DOM: Networking. Last updated 2020-03-05.
string to binary
https://www.cleancss.com/string-to-binary/
String To Binary Converter
Enter a string number or string to get the binary version. Base number and string converter.
string to binaryconverter