regex101: JavaScript Match Workspace

Positive Lookbehind(?<=^[\t ]*|[\n;](?:[\t ]*(?:\w+ )?)?)

1st Alternative^[\t ]*

^start of string

Character Class[\t ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative[\n;](?:[\t ]*(?:\w+ )?)?

Character Class[\n;]

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

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Non-Capturing Group(?:[\t ]*(?:\w+ )?)?

?repeats the group contents below at most once:

Character Class[\t ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\w+ )?

?repeats the group contents below at most once:

\w+any word character, repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

exportthe literal text export (case sensitive)

Non-Capturing Group(?:(?: *(?<type>type) *)|[\t\n ]*)

1st Alternative(?: *(?<type>type) *)

Non-Capturing Group(?: *(?<type>type) *)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Group type(?<type>type)

typethe literal text type (case sensitive)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

2nd Alternative[\t\n ]*

Character Class[\t\n ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

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

the literal (32₁₀ / 40₈ / 20₁₆)

Group exports(?<exports>(?:\*(?: +as +\S+)?)|\S+|(?:{[\w\t\n\r "$'*,./-]+?}))

1st Alternative(?:\*(?: +as +\S+)?)

Non-Capturing Group(?:\*(?: +as +\S+)?)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Non-Capturing Group(?: +as +\S+)?

?repeats the group contents below at most once:

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

asthe literal text as (case sensitive)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

\S+any non-whitespace character, repeated at least once

2nd Alternative\S+

\S+any non-whitespace character, repeated at least once

3rd Alternative(?:{[\w\t\n\r "$'*,./-]+?})

Non-Capturing Group(?:{[\w\t\n\r "$'*,./-]+?})

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Character Class[\w\t\n\r "$'*,./-]+?

+?matches at least one character from the set below:

\wany word character

\ta tab character (ASCII 9)

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

\ra carriage return (ASCII 13)

the literal (32₁₀ / 40₈ / 20₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Character Class[\t ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

the literal (32₁₀ / 40₈ / 20₁₆)

fromthe literal text from (case sensitive)

Character Class[\t ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\s*any whitespace character, repeated any number of times

Group specifier(?<specifier>(?:(?<=' *)[^']*[^\s'](?= *'))|(?:(?<=" *)[^"]*[^\s"](?= *")))

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Character Class["']

Global pattern flags

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

26 tokens

Regular Expression

(?<=^[\t ]*|[\n;](?:[\t ]*(?:\w+ )?)?)export(?:(?: *(?<type>type) *)|[\t\n ]*)(?<exports>(?:\*(?: +as +\S+)?)|\S+|(?:{[\w\t\n\r "$'*,./-]+?}))[\t ]*from[\t ]*["']\s*(?<specifier>(?:(?<=' *)[^']*[^\s'](?= *'))|(?:(?<=" *)[^"]*[^\s"](?= *"))) *["']

Unit Tests

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