regex101: JavaScript Match Workspace

Pro

1st Alternative(?<!\n\d+)(?<=(?:^|\n)[^\n(]*(?:$[^\n(]*(?:\([^\n(]*(?:\([^\n(]*(?:\(.*$[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*)\)

Negative Lookbehind(?<!\n\d+)

\na line-feed (newline) character (ASCII 10)

\d+a digit, repeated at least once

Positive Lookbehind(?<=(?:^|\n)[^\n(]*(?:$[^\n(]*(?:\([^\n(]*(?:\([^\n(]*(?:\(.*$[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*)

Non-Capturing Group(?:^|\n)

1st Alternative^

^start of string

2nd Alternative\n

\na line-feed (newline) character (ASCII 10)

Negated Character Class[^\n(]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:$[^\n(]*(?:\([^\n(]*(?:\([^\n(]*(?:\(.*$[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*

*repeats the group contents below any number of times:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^\n(]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:$[^\n(]*(?:\([^\n(]*(?:\(.*$[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*

*repeats the group contents below any number of times:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^\n(]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:$[^\n(]*(?:\(.*$[^\n()]*)*\)[^\n()]*)*

*repeats the group contents below any number of times:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^\n(]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:$.*$[^\n()]*)*

*repeats the group contents below any number of times:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

.*any character (except for line terminators), repeated any number of times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative$(?=(?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\(.*$)*[^\n)]*\))*[^\n)]*\))*[^\n)]*\))*[^\n)]*(?:\n|$))

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Positive Lookahead(?=(?:[^\n()]*$(?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\(.*$)*[^\n)]*\))*[^\n)]*\))*[^\n)]*\))*[^\n)]*(?:\n|$))

Non-Capturing Group(?:[^\n()]*$(?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\(.*$)*[^\n)]*\))*[^\n)]*\))*[^\n)]*\))*

*repeats the group contents below any number of times:

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:[^\n()]*$(?:[^\n()]*\((?:[^\n()]*\(.*$)*[^\n)]*\))*[^\n)]*\))*

*repeats the group contents below any number of times:

Negated Character Class[^\n()]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:[^\n()]*$(?:[^\n()]*\(.*$)*[^\n)]*\))*

*repeats the group contents below any number of times:

Negated Character Class[^\n()]*

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:[^\n()]*$.*$)*

Negated Character Class[^\n)]*

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n)]*

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n)]*

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^\n)]*

Non-Capturing Group(?:\n|$)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

26 tokens

Regular Expression

(?<!\n\d+)(?<=(?:^|\n)[^\n(]*(?:\([^\n(]*(?:\([^\n(]*(?:\([^\n(]*(?:\(.*\)[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*\)[^\n()]*)*)\)|\((?=(?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\((?:[^\n()]*\(.*\))*[^\n)]*\))*[^\n)]*\))*[^\n)]*\))*[^\n)]*(?:\n|$))

Unit Tests

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