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/**
* Implements a fuzzy filter
* Iterates through chars of `search_term` and checks if each char exists in consecutive order in `text`.
* For example, this means that `text="Gecko"` and `search_term="geo"` will return `true`
* but using `text="Gecko"` and `search_term="goe"` will return `false`
*
* Implements a subset of "fuzzy string searching"
* https://en.wikipedia.org/wiki/Approximate_string_matching
*/
function fuzzy_filter(text: string, search_term: string): boolean {
const lowercase_text = text.toLowerCase();
const lowercase_search_term = search_term.toLowerCase();
let previousIndex = -1;
for (let i = 0; i < lowercase_search_term.length; i++) {
const char = lowercase_search_term[i];
const currentIndex = lowercase_text.indexOf(char, previousIndex + 1);
if (currentIndex === -1) {
return false;
}
previousIndex = currentIndex;
}
return true;
}
export { fuzzy_filter };
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