session-desktop/ts/util/cleanSearchTerm.ts
2019-03-12 17:44:14 -07:00

24 lines
726 B
TypeScript

export function cleanSearchTerm(searchTerm: string) {
const lowercase = searchTerm.toLowerCase();
const withoutSpecialCharacters = lowercase.replace(
/([!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~])/g,
' '
);
const whiteSpaceNormalized = withoutSpecialCharacters.replace(/\s+/g, ' ');
const byToken = whiteSpaceNormalized.split(' ');
const withoutSpecialTokens = byToken.filter(
token =>
token &&
token !== 'and' &&
token !== 'or' &&
token !== 'not' &&
token !== ')' &&
token !== '(' &&
token !== '+' &&
token !== ',' &&
token !== 'near'
);
const withWildcards = withoutSpecialTokens.map(token => `${token}*`);
return withWildcards.join(' ').trim();
}