const regex = /(export[^(]*)(\(([^)]+)\))([^{]*)([^{]*{)/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(export[^(]*)(\\(([^)]+)\\))([^{]*)([^{]*{)', 'g')
const str = `export default function something(\$123, something, wauw) {
function(random) {
return random;
function(woo) {
return "wow";
}
}
}
export default function(something, wauw) {
}
`;
const subst = `$1$2$4$5\nthis.$ngInject = [$3]`;
// 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