new RegExp and Strings in JavaScript

When creating a regular expression in JavaScript from a string, the backslashes are consumed1 which can lead to subtle bugs:

new RegExp("\d")    // > /d/
new RegExp("\d\w")  // > /dw/ 

There are a couple ways2 to avoid this, using a second backslash // or using the String.raw method3:

new RegExp("\\d\\w\\s")         // > /\d\w\s/
new RegExp(String.raw`\d\w\s`)  // > /\d\w\d/