const regex = /(?:^|\t)
(
[^\t\n]+
(?=.*
(^[ ]{3,})"
)
)
/gsm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?:^|\\t)
(
[^\\t\\n]+
(?=.*
(^[ ]{3,})"
)
)
', 'gsm')
const str = `База Базовая добыча (вЯк 8) 42370
Бурение well_obj1_1_prod (вЯк 8) 42370
Бурение well_obj1_1_inj (вЯк 8) 42430
"`;
const subst = `$1$2`;
// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);
console.log('Substitution result: ', result);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions