build: replace 'string' package dependency with custom function to check is a file ends with '.html' or not

[aleks-elkin]

Because the package grunt-spiritual-edbml-tmpfix hijacking String.prototype with non-standard polyfills it is impossible to use a standard String.prototype.endsWith() function, so I had to implement the custom one-line function to check is the filename ends with .html or not.

---

What's wrong with the custom implementation in grunt-spiritual-edbml-tmpfix? It looks like this:

String.prototype.endsWith = function (string) {
  return this.indexOf(string) === this.length - 1;
};

The problems are:

• Anything longer than 1 character will fail the check.
• If we have two occurrences of the search term in the string it will also fail.

You can see the implementation of String.prototype.endsWith in grunt-spiritual-edbml-tmpfix here: https://unpkg.com/[email protected]/tasks/things/compiler.js

[wejendorp]

... wow. But nice to get rid of string 👍